GeoNotes Cypress Hills and area
These articles are updated periodically as new information becomes available. Articles may also be updated for clarity and correction of any research errors. GeoNotes are available online at SOUTHWESTIAN: Search results for GeoNotes (https://southwestian.blogspot.com).
Topics covered are:
ICE AGE MEGAFAUNA (20,000-10,500 years before present), Southern Saskatchewan and Alberta
ICE AGE PALEO AMERICANS (20,000-8500 years before present) and their origins, Southern Saskatchewan and Alberta
THE BIG THAW OF 17,000 YEARS AGO: the nature of glacial dynamics, and our changing climate
FLORA, FAUNA and Holocene (12,000-present) paleoclimates
THE GREAT SAND HILLS, and the alkali lakes and ponds
The MAPLE CREEK-WHITE VALLEY and EAGLE BUTTE ASTROBLEMES
THE BEARPAW MOUNTAINS and the SWEET GRASS HILLS, MONTANA, and the North American Cordilleran mountain building (orogenic) events
CYPRESS HILLS FORMATION: flora, fauna, and topography before the emergence of the Cypress Hills Plateau
THE CYPRESS HILLS STRATIGRAPHIC SEQUENCE: the significance of the K-T boundary (64 Ma) and a major extinction event
THE YOUNGER DRYAS EVENT: a recent climate disruption and extinction event, and how it may relate to past major and minor extinction events
ICE
AGE MEGAFAUNA (20,000-10,500 years before present)
Southern
Saskatchewan and Alberta
Ice
Age megafauna 14,000 years before present. Image: Naturewasmetal
(Reddit) The last Ice Age megafauna data reveals a
sudden disappearance of many animals roughly between 14,000 and 9000
years before present or BP (Fig 1). From about 14,000 BP (Fig. 2)
there has been an anomalous cooling period lasting 2400 years.
Cooling periods create unusual climate and ecological changes that
can have dramatic effects on the biosphere. The cause of the cooling
period is not well understood and is attributed to several
terrestrial and cosmological factors. Looking closer at this cooling
period along with the examination of the Greenland ice core date an
interesting anomaly became apparent between 12,800-11,600 BP (Fig.
2). This period is known as the Younger Dryas Event (YDE).
Figure
1: Late Pleistocene mortality graph. Largest number of megafauna
deaths occurred between 14,000-9000 BP. Peak mortality is roughly
around the Younger Dryas Event (12,800-11,600 BP). Image: Randall
Carlson
Figure
2: Younger Dryas Event between 12,800-11,600 BP. Major climate
cooling began around 14,000 BP, then a sudden cold plunge 12,800
years ago that lasted 1200 years before a sudden temperature rise.
Image: Cosmictusk.com
There
has been much speculation as to what happened around 12,800 years ago
with a wide range of conflicting theories. The most accepted theory
is that the YDE was caused by the shutdown of the North Atlantic
current that circulates warm tropical waters northward by the sudden
influx of cold fresh water from the North American deglaciation.
However, in the 1990s a stronger theory with more evidence emerged
when paleo American Clovis archaeological sites were examined in more
detail.
At
numerous Clovis archaeological sites, mainly in the US, unusual
amounts of magnetic particles and microspherules, rich in the
platinum group of elements, nanodiamonds, and other high-temperature
carbon materials are found within an organic-rich black mat soil
horizon (Fig. 3). Above and within this horizon no megafauna or
Clovis artifacts were found. Simultaneously, based on coring lake
and marine sediment, and ice samples a major biomass burning (roughly
9% of earth’s biomass) occurred over a wide geographical area
covering four continents. Researchers are leaning towards this as
evidence that a cosmic impactor was responsible for the YDE. This
catastrophic impactor has several questionable impact signatures and
is believed to be a comet or asteroid which broke into several large
fragments that struck the thick ice around the Hudson’s Bay, Great
Lakes, and parts of Northern Europe. This impact event was mainly a
Northern Hemisphere phenomenon that was experienced globally. Most
researchers believe the black mat is derived from the combustion of
forests and grasslands, but
there are
some inconsistencies
in the scientific literature as to what
produced the organic
black mat and the high-temperature particulates, and elements within
the mat.
Figure
3: An example of a layer of organic black mat at the Younger Dryas
Boundary. Image: Richard Firestone (2019)
In
2018 an
airborne radar survey
revealed a 31 km wide,
300 m deep crater in
NNW Greenland,
the
Hiawatha Crater. It
was discovered
under the gradually
retreating 1 km thick Hiawatha Glacier. Originally, it
was thought this
impactor
caused the YDE, but recent Ar40/Ar39 dating of the shocked zircon
yielded an impact date of 58 million years. It’s
highly unlikely that this impactor was
the cause of the YDE.
The
initial high losses of the megafauna and the Clovis culture around
12,800 BP were sudden. The suddenness of the event is seen in the
frozen Siberian mammoths some still containing recognizable
undigested vegetation in their stomachs while other mammoths are
buried standing upright in the frozen debris muck. Following the
initial catastrophic event, drastic ecological and climate changes
occurred along with possible paleo American people over hunting
eventually eliminating some megafauna genera permanently. To date,
the Ice Age mammal extinctions that resulted from the YDE are 37
genera lost in North America (82%) and 54 genera lost in South
America (74%). Subsaharan Africa (16%), Asia (52%), Europe (59%),
and Australasia (71%) have also lost a significant number of
megafauna as shown in closed brackets. Mammals whose genera survived
the YDE (e.g., deer, moose, and bison) had also suffered greatly with
reduced numbers. An interesting aspect to this is the unexpected
swift arrival of new species of mammals, usually after a major
catastrophe, that defies natural evolution by thousands if not
millions of years has some researchers perplexed as to where these
new arrivals suddenly came from.
The
Northern Great Plains grasslands supported an abundance of wildlife
much of which is still recognizable today. As the continental
glacier retreated northeastward the wildlife and paleo American
cultures also moved with the retreating ice.
On
the
southern
plains
of
Saskatchewan
and Alberta, Ice Age megafauna discoveries are rare. To
get some idea of the kind of mammals that once
lived
and
roamed
throughout
this area the
remains uncovered
from
other paleo
fauna
sites can
give important
clues. The
paleo fauna covered
a wide area
and several
of
the sites contain
the same mammals. Many
of the paleo mammals found at the sites mentioned in
this article
can be found on a
downloadable PDF chart available from the Geological
Survey of Canada (GSC), mr31_map.eps
(canada.ca). A high-resolution jpeg image of the
chart can be found at the end of this article.
This
article looks at
several selected
Pleistocene
(roughly
126,000 to 11,700 BP, Fig.
4)
megafauna
sites (Fig.
5)
that are mentioned in the scientific literature.
Kyle, Saskatchewan; the
South Saskatchewan River bluffs near
Medicine
Hat, Alberta; Wally’s Beach,
Alberta; the
North Saskatchewan River bluffs near
Edmonton, Alberta; and
sites
along the Milk River and the Missouri Basin in Central and Eastern
Montana. The
definition of
megafauna
is an animal weighing
more than
40-46 kilograms (88-100lbs). Smaller
animals are also mentioned with a focus on the megafauna.
Figure
4:
Quaternary period timescale
(2018)
began with the Laurentide ice sheet, 2.58 million years ago to
present. North America is
currently enjoying an interglacial period. Abbreviations:
“b2k” = before the year 2000. ka = thousands years before
present. Ma = millions of years before present.
Image: Subcommission on
Quaternary Stratigraphy
Figure
5: Paleo fauna site map. Image: Google Earth
The
central, eastern, and northern Montana sites are located in gravel
pits of the Milk and Missouri River Basins which are in pre-Wisconsin
(older than 100,000 years, possibly Illinoian glacial or Sangamonian
interglacial, see Fig. 6) glacial tills. All Montana sites are
chosen arbitrarily and are within 200 km (125 miles) of the
Canadian/US border. At Havre, the gravel pits uncovered remains of
mammoths (Mammuthus columbi), two species of
horse (Equus exelsus and E. Conversidens calobatus or
Mexican horse/ass), camel (Camelops minidokae) and
mastodon (Mammut americanum). At Saco-Hinsdale,
Box Creek, and Red Water Creek sites mammoth (Mammuthus
columbi) remains were uncovered. In the gravels
north of Fort Peck near Glasgow and Nashua, horse and mammoth remains
were found. South of Fort Peck, remains of bison (Bison
occidentalis) have been discovered, and near Lisk Creek, another
species of bison (Bison ?latiforns) has
been uncovered. In the Wiota gravels at Tiger Butte, SSW of Fort
Benton, possibly three species of mammoth (Mammuthus boreus, M.
prinigenius, and M. jeffersoni) have been identified. South of
Frazer, mammoth and horse remains were discovered in the Wiota
gravels. Near Outlook, MT, 11 km south of the Canadian (SK)/US
border, tundra muskox (Ovibos moshatus) remains were found,
and horse (Equus sp) remains were uncovered in the Lovejoy
area, 45 km south of the Canadian (SK)/US border.
Figure
6: The Sangamon interglacial and the Illinoian glacial periods
predating the latest Wisconsin glaciation period. Image:
GotBooks.MiraCosta.edu.
Other
Ice Age mammals some not mentioned at the above sites
that likely had their presence in central, eastern, and northern
Montana, and up into southern Saskatchewan and central Alberta are; Jefferson’s ground sloth
(Meglonyx jeffersonii), dire
wolf (Canis dirus),
coyote (Canis latrans),
grey wolf (Canis lupus),
fox (Vulpes sp),
bobcat/Lynx (Lynx rufus),
scimitar cat (Homotherium serum),
badger (Taxidea taxus),
long-tailed
weasel (Mustela frenata),
giant short-faced bear
(Arctodus simus), camel
(Camelidae hesternus), nearctic
deer (Odocoilheus sp),
caribou (Rangifer tarandus),
pronghorn (Antilocapra americana),
bison (Bison bison, B. antiquus and B. occidentalis),
mountain sheep (Ovis canadensis), muskox (Bootherium or
Symbos), beaver (Castor
canadensis), pocket gopher
(Thomomys sp),
imperial mammoth (Mammuthus
imperator), prairie dog (Cynomys
sp.), ground squirrel
(Spermophilus sp.), Richardson’s
ground squirrel (Spermophilus richardsonii),
thirteen-lined ground squirrel (Spermophilis
tridecemlineatus), muskrat
(Ondatra zibethecus), and
rabbits (Lepus sp.).
In
Alberta, the Edmonton paleo fauna sites are in quarries along the
North Saskatchewan River terraces and buried valleys in the Late
Pleistocene and early Holocene gravels. Many of the mammalian fauna
uncovered are herbivores with a few carnivores, mainly; gray wolf
(Canis lupus), giant short-faced bear (Arctodus simus),
and the American lion (Panthera leo atrox). The giant
short-faced bear is the first recorded in Alberta. The grey wolf and
the American lion have been uncovered previously near Bindloss and
Medicine Hat. The herbivores revealed are Jefferson’s ground sloth
(Megalonyx jeffersoni), woolly mammoth (Mammuthus
primigenius), Columbian mammoth (Mammuthus columbi),
American mastodon (Mammut americanum), Mexican half-ass (Equus
conversidens), Niobrara horse (Equus niobrarensis),
barren-ground caribou (Rangifer tarandus, small), steppe bison
(Bison priscus), giant bison (Bison latifrons), tundra
muskox (Ovibos moschatus), helmeted muskox (Bootherium
bombifrons), yesterday’s or western camel (Camelops
hesternus), and beaver (Castor canadensis).
An
interesting Alberta site, Wally’s Beach 196 km SSE of Calgary
is the only definitive site in North America where paleo Americans
(Clovis culture) hunted and processed horses (Equus conversidens)
and camels (Camelops hesternus) roughly 13,300 years ago.
Also nearby was an unbutchered extinct helmeted muskox (Bootherium
bombifrons). Bones
of bison, mammoth, and caribou were found along with mammoth tracks on
the wind-blown sands.
Another
interesting paleo fauna area in Alberta are the South Saskatchewan
River bluffs near Medicine Hat where several herbivorous mammals and carnivore remains
were uncovered from a buried valley system along the South
Saskatchewan River consisting of Pleistocene sand, gravel, silt, and
clay deposits of glacial origin. These deposits yielded remains of a
sabre-toothed cat (Smilodon fatalis), the only confirmed
occurrence in Canada. Other cat remains include Lynx (Lynx
canadensis), American lion (Panthera atrox), cave lion
(Panthera spelaea), giant jaguar (Felis ?atrox), and a
scimitar-toothed cat (Homotherium sp.). Scimitar-toothed is a
sabre-tooth variant. Herbivores include pronghorn antelopes
(Anilocapra americana), bison (Bison bison), western
camel (Camelops hesernus), another camel species
(Hemiauchenia sp.), Irvingtonian camel (Camelops
minidokae), mountain sheep (Ovis canadensis) white-tailed
deer (Odocoileus virginianus), nearctic deer (Odocoileus
sp.) Steven’s long-legged llama? (Tanupolama ?stevensi)
reindeer/caribou (Ranifer tarandus), Mexican ass (Equus
conversidens), Scotti’s horse (Equus scotti),
giant horse (Equus giganteus), southern horse (Amerhippus
sp.), stilt-legged ass (Equus calobatus), Siberian
mammoths (Mammuthus prinigenius), Imperial
mammoth (Mammuthus imperator), Jefferson’s mammoth
(Mammuthus jeffersoni), Cook’s mammoth (Mammuthus
haroldcooki), ground sloth (Megalonychidae ?Megalonyx sp.)
and another species of ground sloth (?Nothrotherium sp.).
Also included in the fauna assemblage are wolf (Canis lupus),
red fox (Vulpes vulpes), raccoon (Procyon lotor),
rabbits (Lagomorpha sp. and Sylvilagus sp.),
hare (Lepus townsendii) rodents, and a placental mammal,
possibly a sloth (Xenarthra sp.), spruce grouse (Canachites
?canadensis), pocket gopher (Thomomys talpoides), prairie
dog (Cynomys ludovicianus), ground squirrel (Citellus
?richardsoni), mole (Microtus sp.), muskrat (Ondatra
zibethecus), porcupine (Erethizon dorsatum), and mink
(Mustela vison).
An
interesting Saskatchewan megafauna site near Kyle contains the
remains of the most complete skeleton of a mammoth found on the
Alberta, Saskatchewan, and Manitoba prairies. The 20% complete
skeleton was discovered during road construction in 1964. The
remains are of a woolly mammoth (the same animal
identified differently Mammuthus primigenius
[Stoffel,2016] and Mammuthus columbi [Harington, 2017]) and are roughly 12,000
years old. Based on the tusk size, epiphysis
(the end of the leg long bone),
and molar eruption
it was determined the animal
was a male between 20-25
years old. The
animal died of natural causes and showed no signs of being hunted. A
detailed study of the mammoth’s bone
structure showed a loss
of bone density around the vertebra indicating
malnutrition. Malnutrition is a result
of climate change causing
an ecological change leading
to a shortage
of food. The
paleoenvironmental evidence suggests
the area was partly forested with a maximum summer temperature of 28
C.
The
difference between the Columbian mammoth (Mammuthus
columbi)
and
the woolly mammoth (Mammuthus
primigenius )
is
their topographical preference (Fig.
7).
Woolly
mammoths favour glacial tundra-steppe (this
fits the Kyle mammoth) while
the Columbian mammoth inhabited savannah environments of temperate
southern and central North America. The ranges of both mammoths
occasionally overlapped in time and space. A mitochondrial genome
study found that both mammoth groups have a nearly indiscernible
mitochondrial genome suggesting interbreeding. This
intermediate hybrid may have
been
the species Mammuthus
jeffersonii.
The
mammoths lived 60-80 years of
age,
reached
heights of 4 m (14’), and
weight
5.4
to 15 tons.
Pygmy
mammoth (Mammuthus
exilis) skeletons
have also been discovered on Santa Rosa Island, one of the
California’s Channel Islands just of the coast of Santa Barbra/Los
Angeles. They reached between 1.4-2.2 m (4.5-7’), and weight 908
kg (2000 lbs). The
last mammoths become
extinct on
Wrangel
Island, Russia
3750-4000
years ago.
Figure
7: The difference between Mammuthus columbi and Mammuthus
primigenius is their topographical preference shown in green.
Image: BioMed Central (Physics.org)
Wrangel
Island, St. Paul Island (Alaska), and several other islands in
the Bearing Straight are
remnants of the Bearing Land Bridge that became isolated between
14,700-13,500 BP trapping the woolly mammoths. These mammoths
continued to survive on the islands long after the mainland
populations became extinct. St. Paul Island has one of the best-dated prehistoric extinctions records. Research indicates that the mammoth's disappearance on St. Paul Island around 5600 BP was
triggered by the decline and contamination (urine and feces) of the
freshwater supply. Other contributions to the extinction are
regional climate change (dryer climate 7850-5600 BP), and synergistic
effects (e.g. reduced roaming, inbreeding) of a shrinking island as the sea level
rose. The vegetation composition on the island remained stable and
there was no human presence thus
not considered to be an extinction factor. Similarly, the Wrangel
Island environment was capable of supporting its
woolly
mammoth population prior to their extinction; however, to lack of
genetic diversity because of inbreeding created a genetic meltdown
leading to their demise.
Some
animals, like
the horse,
were
eliminated from North America 8000-12,000
years ago
only to be reintroduced much later from
Europe by
the Spanish
conquistador Hernan
Cortés in 1519 when
he brought 16 domesticated horses (Equus
callabus)
to help in the search for his
gold.
Larger shipments of
horses to
North America were
followed
by explorers De Soto and Coronado.
The
tundra muskox (Ovibos
moschatus)
survived
YDE
and
possible
paleo American hunting strategies and
is currently inhabiting the extreme Arctic regions of Canada and
Greenland. They were reintroduced
into Alaska, southern
Greenland, Norway, Sweden, eastern
Canada,
and the
Siberian
high
Arctic.
They
are also kept in wildlife parks in Germany. The
current
world population of muskox is between 80,000-125,000 animals. Muskoxen have a thick coat and derive
their
name from the emission of the male's strong musky odour during mating season to attract females.
The
bison
(Bison bison) narrowly
escaped extinction not from the YDE or the need to hunt by paleo
Americans and their modern successors, but by greedy fir merchants
and
their financiers along with
the political chicanery, mainly in the US, to deal with the so-called
“Indian problem” of the mid to late 19th
century when bison numbers were drastically
reduced
to 400 individuals. Today, by conservation
and careful
land
management in both the US and Canada the bison numbers
have
recovered to more than 500,000 individuals.
Like
the bison, the reindeer/caribou
(Rangifer tarandus) have
survived the YDE and hunting. They
inhabit high latitudes living in the environmentally sensitive colder
climates of the arctic, sub-arctic, boreal, and mountain ranges of
Northern Europe, Siberia, and North America. In
North America and Greenland the Rangifer
tarandus are
called caribou and in Siberia and Europe reindeer. Since 1998
reindeer/caribou
herds have declined
on average
by 56%. Five
herds in Alaska and Canada have shrunk by 90%. Swelling and
shrinking of herds is common and not surprising, and
so is the changing ecosphere.
The declining reindeer and caribou example can give a clue to past
climate-related events affecting
the ecosphere and its ability to sustain the
biosphere.
The cause of the current herd decline is changing climate. Caribou/reindeer
herds subsist on lichen,
mainly reindeer
lichen (Cladonia
rangiferina), during the winter months. The reindeer lichen grows on the ground, but
warmer
temperatures cause taller vegetation
to grow squeezing
out the
lichen. There
are more bugs during warmer weather causing caribou/reindeer to spend
their energy hiding from the insects and not looking for food.
Warmer winters create more rainfall and when it freezes the layer of
ground
ice makes it difficult for reindeer/caribou to break through the
ice crust
to reach the lichen. As a result, large numbers of caribou/reindeer
starve to
death.
In
Russia, in
2013,
ice cover lichen caused the death of 61,000 reindeer.
Additional
information on
the caribou/reindeer,
the
females are
the only deer members (Cervidae) that
carry
antlers.
The antlers
are used to scrape away snow to uncover lichen and for protection.
The
fir on the feet is exceptionally
long and acts as a thread beneath the hoofs. The feet are wide and
act as snowshoes. The males weigh 70-150 kg (154-330 lbs) and the
females weigh somewhat less. Reindeer/caribou
live to 10-15 years of age and have been around for
roughly
770,000
years.
Yesterday’s
camel (Camelops
hesternus)was
slightly larger than today’s camels,
had a single hump, long
limbs,
two
toes,
and strong lips to grasp food. No camel remains were found east of
the Mississippi River only in the dryer open spaces of the central
and western Great Plains. They
are often
found at sites with horse and bison remains. Camels
weighed
800 kg (1764 lb). They
began
their
existence in North America 45 million years ago and
went
extinct around 11,000 BP.
The
sabre-toothed tiger (Smilodon
fatalis) was
a predator on the grassland of the Great Plains and open woodlands.
It’s not a true tiger and is
only
distantly related to modern lions, cheetahs, and tigers. The cat had
a thick neck, broad chest, muscular body, thick legs, short tail, and
large 17
to 30 cm
(7
to 12 inches)
long curved canine teeth (Fig.
8).
The teeth were used for slicing the jugular vein and windpipe of its
prey. Deer, horses, camels, bison, and young mammoths were favourite
food sources.
Skull wounds of paleo American
people suggest the animal occasionally hunted humans. The animal was an ambush predator that waited for its meal undercover.
The cat had a weak bit force 1/3 that of a lion. Its jaw can
stretch 120 degrees, twice that of a lion. The horseshoe-shaped
hyoid
bone in the mouth suggests it roared. They
had no natural enemies but competed for food with
other
cats and canines. Their life
span was around 20-40 years, and
the animal weighed between 68-300 kg (150-660 lbs). They went extinct rougly 10,000 years ago, and were found throughout the Pleistocene. Different species of Smilodon lived in South, Central, and North America.
Figure
8: The sabre-toothed tiger (Smilodon fatalis).
Characteristic large
17
to 30 cm
(7
to 12 inches)
long curved canine teeth. Image:
Dantheman9758, Deviant Art
Muskox
distribution in the high Arctic. Red represents the historical
habitat. Blue is the introduced population. Image:
Wikipedia-Muskox
The
shaded area is the North American distribution of the sabre-toothed
tiger (Smilodon fatalis). Image: Ashley Reynolds; et al (2019)
Difference
between a mammoth and a mastodon. Mammoths are more delicately
built, head and shoulders much above hindquarters, high-domes skull,
tusks curve down more than in mastodons. Mastodons are stockier with
heavy frame, head slightly above hindquarters, low-domed skull, tusks
curve down slightly before curving out. Image:
Dantheman9758, Deviant Art
Mastodon
(browsers) molar on the left has cone-shaped cusps for crushing
twigs, leaves, and branches. The mammoth (grazers) molar is ridged
for grinding grass, twigs, and leaves similar to a modern elephant.
Image: Royal Alberta Museum (Youtube)
Wind scoured mammoth tracks on Wally's Beach at St. Mary Reservoir, Southwestern Alberta. Image: Shayne Tolman from Retroactive.
Size
comparison of mammoths, elephants, and a mastodon with
a human figure. Image:
Prehistory Wildlife
Woolly
mammoth (Mammuthus
primigenius)
distribution
during the Late Pleistocene based
on fossil evidence. Siberia and Alaska were connected by the Beringia
land bridge.
Image: Andy Fyon
A
high-resolution image of ice age animals from the southwestern great
plains. A downloadable PDF chart is available from the Geological
Survey of Canada (GSC), mr31_map.eps
(canada.ca).
If
you planning to do your own research, the radiocarbon (14C years
before the present or BP) dates need to be converted to calendar
years before the present. Below is a chart and a table to help with
the conversion. Usually, the researcher will indicate which dating
system they are using. If it’s years before present (for example,
5000 BP) there is no need to convert, if it’s 5000 14C BP or
radiocarbon dates BP then a conversion is needed.
An
example, the 10,000 radiocarbon date (vertical axis) is roughly 11,400
calendar years (horizontal axis) on the squiggly line. Or, you can
also use the chart below to get the calendar years before the
present.
Sources:
A
Pleistocene
Wonderland; Montana Department of Transportation; Helena, MT; Site
accessed 5-16-2022; PleistoceneWonder.pdf
(mt.gov).
Bamble, Katherine; Jass, Christopher N.; et al; Ice Age Mammals: A Guide for Alberta's Sand and Gravel Industry; Royal Alberta Museum; June 2019; (PDF) ICE AGE MAMMALS: A Guide for Alberta's Sand & Gravel Industry (researchgate.net; Site accessed 9-24-2024.
BioMed
Central; A Mammoth Task—sorting out mammoth evolution; Phys.org;
May 30, 2011; Site accessed May 24, 2022; A
mammoth task -- sorting out mammoth evolution (phys.org).
Burns,
James A.; Young, Robert R.; Pleistocene Mammals of the Edmonton
Area, Alberta. Part I. The Carnivores; Canadian Journal of Earth
Science; Vol. 31, No. 2; Pgs. 393-400; February 01, 1994; (PDF)
Pleistocene mammals of the Edmonton area, Alberta. Part I. The
carnivores (researchgate.net).
Boeskorov,
Gennady G.; Arctic Siberia: refuge of the Mammoth fauna in the
Holocene; Quaternary
International; 142-143; 2006; Pgs. 119-123; (99+)
Arctic Siberia: refuge of the Mammoth fauna in the Holocene |
Gennady Boeskorov – Academia.edu.
Carlson,
Randall; Site accessed May
24, 2022;
Homepage
- Randall Carlson.
Churcher,
C.S.; The Vertebrate Faunas of Surprise, Mitchell, and Island
Bluffs, Near Medicine Hat, Alberta (72L); Geological Survey of
Canada; Report of Activities Part A: April to October 1969; Pgs.
158-160; pa_70_1a.pdf
(canada.ca)
or
GEOSCAN
Search Results: Fastlink (nrcan.gc.ca).
Dantheman9758;
Deviant Art; Site accessed May
24,
2022; Search
'Dantheman9758' on DeviantArt - Discover The Largest Online Art
Gallery and Community.
Dvorksy,
George; How the Last Woolly Mammoths Met Their Demise on a Remote
Arctic Island; Gizmodo; Oct 7, 2019; How
the Last Woolly Mammoths Met Their Demise on a Remote Arctic Island
(gizmodo.com); Site
accessed 2-17-2023
Earth
Science; Chapter 13-Glaciers & Glaciation; Site accessed May 5,
22, 2022;
https://gotbooks.miracosta.edu/earth_science/chapter13.html.
Enk,
Jacob; et al; Complete Columbian Mammoth Mitogenome Suggests
Interbreeding with Wolly Mammoths; Genome Biology; 12(5):R51;
May
31, 2011;
Complete
Columbian mammoth mitogenome suggests interbreeding with woolly
mammoths (nih.gov).
Extinct
Western Camel (Camelops hesternus) Fact Sheet; Summary; San Diego
Zoo Wildlife Alliance Library; March 30, 2021; Site accessed May 25,
2022; Summary
- Extinct Western Camel (Camelops hesternus) Fact Sheet - LibGuides
at International Environment Library Consortium.
Firestone,
Richard B.; Disappearance of Ice Age Megafauna and the Younger Dryas
Impact; Planetary
Scinece; July 24, 2019;
https://beta.capeia.com/planetary-science/2019/06/03/disappearance-of-ice-age-megafauna-and-the-younger-dryas-impact.
Fyon,
Andy; Ice Age Mammals-Woolly Mammoth; Canada
(Ontario) Beneath Our Feet; April
6, 2017; Site accessed May 24, 2022; Ice
Age Mammals - Woolly Mammoth — Canada (Ontario) Beneath Our Feet
(ontariobeneathourfeet.com).
Graham,
Russell W.; Belmecheri, Soumaya; et al; Timing and Causes of
Mid-Holocene Mammoth Extinction On St Paul Island, Alaska; PNAS; Vol
113, No 33; August 16, 2016; (96)
Timing and causes of mid-Holocene mammoth extinction on St. Paul
Island, Alaska | Lee Newsom – Academia.edu;
Site accessed 2-16-2023
Hansen,
Brage Bremset; et al; Reindeer turning maritime: Ice-locked tundra
triggers changes in deitary niche utilization; Ecosphere; Vol. 10,
Issue 4; Article e02672; April 2019;
https://esajournals.onlinelibrary.wiley.com/doi/epdf/10.1002/ecs2.2672
or
https://esajournals.onlinelibrary.wiley.com/doi/10.1002/ecs2.2672.
Harington,
C.R.; The Kyle Mammoth: A late Pleistocene Columbian Mammoth from
Souther Saskatchewan, Canada; Quaternary International; Vol. 443,
Part A; July 2017; Pgs. 79-87; The
Kyle Mammoth: A Late Pleistocene Columbian mammoth from southern
Saskatchewan, Canada – ScienceDirect.
Hill,
Christopher L.; Pleistocene Mammals of Montana and Their Geologic
Context; Montana State University; Bozeman, MT; 2001; (PDF)
Pleistocene Mammals of Montana and Their Geologic Context
(researchgate.net).
Howard,
George; The Younger Dryas Impact Hypothesis Since 2007--According to
Graham
Hancock; https://cosmictusk.com/hancock-younger-dryas-impact-hypothesis-since-2007/; The
Cosmic Tusk; May 21, 2017.
Howard,
George; Bibliography, Younger Dryas Impact
Hypothesis; https://cosmictusk.com/younger-dryas-impact-hypothesis-bibliography-and-paper-archive/;
The Cosmic Tusk; Raleigh, NC.
Ice
Age Animals; Yukon Beringia Interpretative Center; Whitehorse,
Yukon; Site accessed May 5, 2022;
https://www.beringia.com/exhibits/ice-age-animals.
Janssen,
Willem; Ice Ae Extinctions Event; Tracing Origins: A Hobby to the
Origins of Civilization; January 28, 2019; Site accessed May 5,
2022; Ice
Age extinction event – Tracing Origins.
Kenny,
Gavin G.; et al; A Late Paleocene Age for Greenland’s Hiawatha
Impact Structure; Science Advances; Vol. 8, No. 10; March 9, 2022;
https://www.science.org/doi/10.1126/sciadv.abm2434.
King,
Gilbert; Where the Buffalo No Longer Roamed;
https://www.smithsonianmag.com/history/where-the-buffalo-no-longer-roamed-3067904/
; Smithsonian Magazine; Washington, DC; July 17, 2012
Kristensen, Todd; Changing Animals: Alberta's Ice Age Megafauna and Wally's Beach; Retroactive; July 13, 2016; Changing Animals: Alberta’s Ice Age Megafauna and Wally’s Beach – RETROactive (albertashistoricplaces.com); Site accessed 9-24-2024.
Jikke
and Roselinde; Pleistocene
Project; Learn all about the Previous Geological Age; Mammals
| Pleistocene Project (wordpress.com).
Kuss,
Charles; The Younger Dryas Event a recent climate disruption and
extinction event, and how it may relate to past major and minor
extinctions events; Southwestian (personal blog); Blogger.com; 2021;
SOUTHWESTIAN:
THE YOUNGER DRYAS EVENT a recent climate disruption
and extinction event, and how it may relate to past major and minor
extinction events.
Mammoth
vs Mastodon; Diffen; Site accessed May 24, 2022; Mammoth
vs Mastodon - Difference and Comparison | Diffen.
Mammut,
including Mammut americanum (American mastodon); Prehistoric
Wildlife; Site accessed May 5, 2022;
http://www.prehistoric-wildlife.com/species/m/mammut.html
or http://www.prehistoric-wildlife.com/index.html.
McNeil, Paul E.; et al; Mammoth Steps: an overview of the fauna of Wally's Beach (DhPg-8), a late Pleistocene locality from southwestern Alberta; Working with the Earth-GeoCanada; 2010; Mammoth steps: an overview of the fauna of Wally’s Beach (DhPg-8), a late Pleistocene locality from southwestern Alberta (geoconvention.com); Site accessed 9-24-2024.
Naturewasmetal;
The Pleistocene was a time of giants....; Reddit; 2020; Site
accessed 5-15-2022; The
Pleistocene was a time of giants. Before their mysterious vanishing,
the megafauna were in abundance similar to the African savannah
today. A mosaic of steppe & taiga was a complex ecosystem; one
supported by its keystone species, the woolly mammoth, whose size
opened habitat for other species. : Naturewasmetal (reddit.com).
Paul
Markwick; Paul’s Palaeo Pages, Cenozoic Palaeogeography; 2021;
Site accessed on May 5, 2022; Cenozoic
Maps - Paul's Palaeo Pages (palaeogeography.net).
Radiocarbon
Dating; Vancouver Island University; 2012; Site accessed May 19,
2022; Radiocarbon
dating.pdf (viu.ca).
Reindeer;
World Deer; 2022; Site accessed May 27, 2022; Reindeer
Facts & Information (Rangifer tarandus) | Learn About Reindeer
(worlddeer.org).
Reynolds,
Ashley R.; et al; Late Pleistocene Records of Felids from Medicine
Hat, Alberta, Including the First Canadian Record of the
Sabre-Toothed Cat Smilodon fatalis; Canadian Journal of Earth
Sciences; January 22,2019; cjes-2018-0272.pdf
(utoronto.ca).
Rogers,
Rebekah L.; Slatkin, Montgomery; Excess of Genomic Defects In A Wolly
Mammoth On Wrangel Island; PLOS Genttics; March 2, 2017; Excess
of genomic defects in a woolly mammoth on Wrangel island (plos.org);
Site
accessed 2-17-2-23
Rosane,
Olivia; Reindeer Numbers Have Fallen by More than Half in 2 Decades;
EcoWatch; Dec 13, 2018; Site
accessed May 27, 2022;
https://www.ecowatch.com/reindeer-population-climate-change-2623281571.html.
Royal
Alberta
Museum; Mammoths versus Mastodons: what is the difference?; Site
accessed May 24, 2022; https://www.youtube.com/watch?v=XcFlCNTNV8s.
Softschools.com;
Saber-toothed Tiger Facts; 2020; Site accessed May 5, 2022;
Saber-toothed
tiger Facts (softschools.com).
Spray,
John (Director); Earth Impact Database; Planetary and Space science
Centre; University of New Brunswick, Fredericton, NB; Site accessed
5-17-2022; Earth
Impact Database (passc.net).
Stalker,
A.M; Ice Age Deposits and Animals From the Southwestern Part of the
Great Plains of Canada (Chart); Geological Survey of Canada; Misc
Report 31; 1982; GEOSCAN
Search Results: Fastlink (nrcan.gc.ca).
Stoffel,
Eliann W; The Kyle Mammoth Project: An Archaeological,
Paleoecological and Taphonomic Analysis (Masters Theses); Department
of Archaeology and Anthropology; University of Saskatchewan;
Saskatoon, SK; August 08, 2016; The
Kyle Mammoth Project: An Archaeological,
Paleoecological and Taphonomic Analysis (usask.ca).
Stoffel,
Eliann W.; The Kyle Mammoth Project: An Archaeological,
Paleoecological and Taphonomic Analysis (Masters Thesis); Department
of Archaeology and Anthropology; University of Saskatoon; Saskatoon,
Saskatchewan; 2016;
(99+)
The Kyle Mammoth Project: An Archaeological, Paleoecological and
Taphonomic Analysis | Eliann Stoffel – Academia.edu.
Subcommission
on Quaternary Stratigraphy--Major Divisions; 2021;
Site accessed May 7, 2022;
https://quaternary.stratigraphy.org/major-divisions/.
Waters,
Michael R.; et al; Late Pleistocene Horse and Camel Hunting at the
Southern Margin of the Ice-free Corridor: Reassessing the Age of
Wally’s Beach, Canada; PNAS; Vol. 122, No. 14; April 7, 2017; Pgs.
4263-4267; ptpmcrender.fcgi
(europepmc.org).
Wikipedia;
Beringia; March 13, 2022; Site accessed May 24, 2022; Beringia
– Wikipedia.
Wikipedia:
Camelops; Site accessed May 25, 2022; Camelops
– Wikipedia.
Wikipedia;
Horses in the United States; May 5, 2022; Site accessed May 22,
2022; Horses
in the United States – Wikipedia.
Wikipedia;
Quaternary Extinction Event; May 6, 2022; Site accessed May
15,
2022; Quaternary
extinction event – Wikipedia.
Wikipedia;
Radiocarbon Calibration; May 8, 2022; Site accessed May 19, 2022;
Radiocarbon
calibration – Wikipedia.
Wikipedia;
Reindeer; May 23, 2022; Site accessed May 27, 2022; Reindeer
– Wikipedia.
Wikipedia;
Smilodon; May 31, 2022; Site accessed June 9, 2022; Smilodon
– Wikipedia.
Woolly
Mammoth Revival-About the Species; Revive & Restore; 2023; About
the Woolly Mammoth (reviverestore.org); Site
accessed 2-17-2023
Youtube:
Shawn Ryan Show; Randell Carlson-Rediscovering Ancient Civilization:
SRS# 103; April 1, 2024; Randall
Carlson - Rediscovering Ancient Civilizations | SRS #103
(youtube.com); Site
accessed 6-29-2024.
Charles Kuss 2022 Updated 09-24-2024