Bootherium

Last updated

Bootherium
Temporal range: middle to late Pleistocene, 0.781–0.012  Ma
O
S
D
C
P
T
J
K
Pg
N
Harlan's musk ox (cast) - Indiana State Museum - DSC00404.JPG
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Artiodactyla
Family: Bovidae
Subfamily: Caprinae
Tribe: Ovibovini
Genus: Bootherium
Leidy, 1852
Species:
B. bombifrons
Binomial name
Bootherium bombifrons
(Harlan, 1825)
Synonyms

Symbos cavifrons

Bootherium (Greek: "ox" (boos), "beast" (therion) [1] ) is an extinct bovid genus from the middle to late Pleistocene of North America which contains a single species, Bootherium bombifrons. [2] Vernacular names for Bootherium include Harlan's muskox, woodox, woodland muskox, [3] helmeted muskox, [4] or bonnet-headed muskox. [5]

Contents

Taxonomy

Skull Bootherium bombifrons.JPG
Skull

Symbos was formerly thought to be a separate genus, but is now known to be synonymous. [6] Its closest living relative is the muskox (Ovibos moschatus), from which it diverged around 3 million years ago. [7] It is also closely related to the contemporaneous extinct genus Euceratherium. [8] [9]

Description

Unlike today's Arctic and tundra-adapted muskoxen, with their long, shaggy coats, Bootherium was physically adapted to a range of less frigid climates, and appears to have been the only species of muskox to have evolved in and remain restricted to the North American continent (the Arctic muskox's range is circumpolar, and includes the northern reaches of Eurasia as well as North America). [3] Bootherium was significantly taller and leaner than muskoxen found today in Arctic regions. Bootherium were estimated to weigh around 423.5 kg (934 lb). [10] Other differences were a thicker skull and considerably longer snout. The horns of Bootherium were situated high on the skull, with a downward curve and were fused along the midline of the skull, unlike tundra muskoxen whose horns are separated by a medial groove.

Distribution

Bootherium was one of the most widely distributed muskox species in North America during the Pleistocene era. Fossils have been documented from as far north as Alaska to California, Utah, [11] Texas, Missouri, Michigan, [12] Oklahoma, Virginia, North Carolina and New Jersey. The species went into decline, and eventual extinction, approximately 11,000 years ago, at the end of the last Ice Age. [3]

Notes

  1. "Glossary. American Museum of Natural History". Archived from the original on 20 November 2021.
  2. McKenna & Bell, 1997, p. 442.
  3. 1 2 3 The Academy of Natural Sciences Archived April 7, 2008, at the Wayback Machine
  4. Helmeted Muskox (Bootherium bombifrons) from Near Fort Saskatchewan, Alberta: Dating Evidence for Redeposition in Late Pleistocene Alluvium
  5. Martin, Paul S. (1999). "War Zones and Game Sinks in Lewis and Clark's West". Conservation Biology. 13 (1): 36–45. Bibcode:1999ConBi..13...36M. doi:10.1046/j.1523-1739.1999.97417.x. S2CID   8580899.
  6. McDonald, Jerry N.; Ray, Ray, Clayton E. (1989). "Autochthonous North American Musk Oxen Bootherium, Symbos, and Gidleya (Mammalia: Artiodactyla: Bovidae)". Smithsonian Contributions to Paleobiology (66): 1–77. doi:10.5479/si.00810266.66.1. ISSN   0081-0266.{{cite journal}}: CS1 maint: multiple names: authors list (link)
  7. West, Abagael Rosemary (January 2016). "Mitogenome of the extinct helmeted musk ox, Bootherium bombifrons". Mitochondrial DNA Part B. 1 (1): 862–863. doi: 10.1080/23802359.2016.1250136 . ISSN   2380-2359. PMC   7799672 . PMID   33473657.
  8. Bover, Pere; Llamas, Bastien; Thomson, Vicki A.; Pons, Joan; Cooper, Alan; Mitchell, Kieren J. (December 2018). "Molecular resolution to a morphological controversy: The case of North American fossil muskoxen Bootherium and Symbos". Molecular Phylogenetics and Evolution. 129: 70–76. doi:10.1016/j.ympev.2018.08.008. PMID   30121342. S2CID   52041464.
  9. Campos, Paula F.; Sher, Andrei; Mead, Jim I.; Tikhonov, Alexei; Buckley, Michael; Collins, Matthew; Willerslev, Eske; Gilbert, M. Thomas P. (1 August 2010). "Clarification of the taxonomic relationship of the extant and extinct ovibovids, Ovibos, Praeovibos, Euceratherium and Bootherium". Quaternary Science Reviews . 29 (17): 2123–2130. doi:10.1016/j.quascirev.2010.05.006. ISSN   0277-3791 . Retrieved 25 January 2024 via Elsevier Science Direct.
  10. Paleobiology Database: Bootherium bombifrons
  11. http://giw.utahgeology.org/giw/index.php/GIW/article/download/17/24/ [ bare URL PDF ]
  12. Abraczinskas, L. M. "Pleistocene proboscidean sites in Michigan: New records and an update on published sites". Michigan Academian. 25 (4): 443–490.

Related Research Articles

<span class="mw-page-title-main">Pika</span> Genus of mountain-dwelling mammal

A pika is a small, mountain-dwelling mammal native to Asia and North America. With short limbs, a very round body, an even coat of fur, and no external tail, they resemble their close relative, the rabbit, but with short, rounded ears. The large-eared pika of the Himalayas and nearby mountains lives at elevations of more than 6,000 m (20,000 ft).

<span class="mw-page-title-main">Caprinae</span> Subfamily of mammals

The subfamily Caprinae, also sometimes referred to as the tribe Caprini, is part of the ruminant family Bovidae, and consists of mostly medium-sized bovids. A member of this subfamily is called a caprine.

<span class="mw-page-title-main">Muskox</span> Arctic land mammal

The muskox, also spelled musk ox and musk-ox, plural muskoxen or musk oxen, is a hoofed mammal of the family Bovidae. Native to the Arctic, it is noted for its thick coat and for the strong odor emitted by males during the seasonal rut, from which its name derives. This musky odor has the effect of attracting females during mating season. Its Inuktitut name "umingmak" translates to "the bearded one".

<span class="mw-page-title-main">Taymyr Peninsula</span> Peninsula in the Far North of Russia

The Taymyr Peninsula is a peninsula in the Far North of Russia, in the Siberian Federal District, that forms the northernmost part of the mainland of Eurasia. Administratively it is part of the Krasnoyarsk Krai Federal subject of Russia.

<span class="mw-page-title-main">Arctic wolf</span> Subspecies of carnivore

The Arctic wolf, also known as the white wolf, polar wolf, and the Arctic grey wolf, is a subspecies of grey wolf native to the High Arctic tundra of Canada's Queen Elizabeth Islands, from Melville Island to Ellesmere Island. Unlike some populations that move between tundra and forest regions, Arctic wolves spend their entire lives north of the northern treeline. Their distribution to south is limited to the northern fringes of the Middle Arctic tundra on the southern half of Prince of Wales and Somerset Islands. It is a medium-sized subspecies, distinguished from the northwestern wolf by its smaller size, its whiter colouration, its narrower braincase, and larger carnassials. Since 1930, there has been a progressive reduction in size in Arctic wolf skulls, which is likely the result of wolf-dog hybridization.

<span class="mw-page-title-main">Bering Land Bridge National Preserve</span>

The Bering Land Bridge National Preserve is one of the most remote Protected areas of the United States, located on the Seward Peninsula. The National Preserve protects a remnant of the Bering Land Bridge that connected Asia with North America more than 13,000 years ago during the Pleistocene ice age. The majority of this land bridge now lies beneath the waters of the Chukchi and Bering Seas. During the glacial epoch this bridge was a migration route for people, animals, and plants whenever ocean levels fell enough to expose the land bridge. Archeologists disagree whether it was across this Bering Land Bridge, also called Beringia, that humans first migrated from Asia to populate the Americas, or whether it was via a coastal route.

<span class="mw-page-title-main">Mammoth steppe</span> Prehistoric biome

During the Last Glacial Maximum, the mammoth steppe, also known as steppe-tundra, was once the Earth's most extensive biome. It stretched east-to-west, from the Iberian Peninsula in the west of Europe, across Eurasia to North America, through Beringia and Canada; from north-to-south, the steppe reached from the arctic islands southward to China. The mammoth steppe was cold and dry, and relatively featureless, though climate, topography, and geography varied considerably throughout. Certain areas of the biome-such as coastal areas-had wetter and milder climates than others. Some areas featured rivers which, through erosion, naturally created gorges, gulleys, or small glens. The continual glacial recession and advancement over millennia contributed more to the formation of larger valleys and different geographical features. Overall, however, the steppe is known to be flat and expansive grassland. The vegetation was dominated by palatable, high-productivity grasses, herbs and willow shrubs.

<i>Camelops</i> Extinct genus of mammals

Camelops is an extinct genus of camel that lived in North and Central America, ranging from Alaska to Honduras, from the middle Pliocene to the end of the Pleistocene. It is much more closely related to living camels than to lamines, making it a true camel of the Camelini tribe. Its name is derived from the Ancient Greek κάμηλος and ὄψ, i.e. "camel-face".

<i>Cervalces scotti</i> Extinct species of deer

Cervalces scotti, also known as stag-moose, is an extinct species of large deer that lived in North America during the Late Pleistocene epoch. It is the only known North American member of the genus Cervalces. Its closest living relative is the modern moose.

<span class="mw-page-title-main">Pleistocene rewilding</span> Ecological practice

Pleistocene rewilding is the advocacy of the reintroduction of extant Pleistocene megafauna, or the close ecological equivalents of extinct megafauna. It is an extension of the conservation practice of rewilding, which aims to restore functioning, self-sustaining ecosystems through practices that may include species reintroductions.

<i>Euceratherium</i> Extinct genus of mammals

The shrub-ox is an extinct species of ovibovine caprine native to North America and China during the Pleistocene epoch. It was the only species in the genus Euceratherium.

<i>Nothrotheriops</i> Extinct genus of ground sloths

Nothrotheriops is a genus of Pleistocene ground sloth found in North America, from what is now central Mexico to the southern United States. This genus of bear-sized xenarthran was related to the much larger, and far more famous Megatherium, although it has recently been placed in a different family, Nothrotheriidae. The best known species, N. shastensis, is also called the Shasta ground sloth.

<i>Hemiauchenia</i> Extinct genus of mammals

Hemiauchenia is a genus of laminoid camelids that evolved in North America in the Miocene period about 10 million years ago. This genus diversified and entered South America in the Late Pliocene about 3-2 million years ago, as part of the Great American Biotic Interchange. The genus became extinct at the end of the Pleistocene. The monophyly of the genus has been considered questionable, with phylogenetic analyses finding the genus to paraphyletic or polyphyletic, with some species suggested to be more closely related to living lamines than to other Hemiaucenia species.

<span class="mw-page-title-main">Camelini</span> Tribe of mammals

Camelini is a tribe of camelids including all camelids more closely related to modern camels (Camelus) than to Lamini, from which camelines split Approximately 17 million years ago. The tribe originated in North America, with the genus Paracamelus migrating over the Bering Land Bridge into Eurasia during the Late Miocene, about 6 million years ago, becoming ancestral to Camelus. The last member of Camelini in North America was Camelops, which became extinct as part of the Quaternary extinction event at the end of the Late Pleistocene, around 12,000 years ago.

<span class="mw-page-title-main">St. Mary Reservoir</span>

St. Mary Reservoir is a reservoir in southwestern Alberta, Canada. It was created for irrigation purposes by the damming of the St. Mary River, which was completed in 1951. The Kainai Nation's Blood 148 Indian reserve borders its northwest side. There are camping and picnic areas at the reservoir, and it is a popular site for power boating, water skiing, windsurfing, swimming and fishing.

<span class="mw-page-title-main">Pleistocene Park</span> Ecological experiment to make an Ice Age-Like Reserve

Pleistocene Park is a nature reserve on the Kolyma River south of Chersky in the Sakha Republic, Russia, in northeastern Siberia, where an attempt is being made to re-create the northern subarctic steppe grassland ecosystem that flourished in the area during the last glacial period.

Throughout the State of Michigan in the United States, many people have found the remains of Pleistocene mammals, almost exclusively mammoths and mastodons. Most of these fossils are found by farmers or construction workers, but most are now in the collection of the University of Michigan. The finding of vertebrate fossils in Michigan is quite rare, so it is best to turn over any specimens to a university or museum for proper cleaning and documentation. Many of these mastodon fossils are found in Southern Michigan, mostly around Ann Arbor. Most mammoth sites are in Northern Michigan.

<span class="mw-page-title-main">Beringian wolf</span> Extinct type of wolf that lived during the Ice Age in Alaska, Yukon, and northern British Columbia

The Beringian wolf is an extinct population of wolf that lived during the Ice Age. It inhabited what is now modern-day Alaska, Yukon, and northern British Columbia. Some of these wolves survived well into the Holocene. The Beringian wolf is an ecomorph of the gray wolf and has been comprehensively studied using a range of scientific techniques, yielding new information on their prey species and feeding behaviors. It has been determined that these wolves are morphologically distinct from modern North American wolves and genetically basal to most modern and extinct wolves. The Beringian wolf has not been assigned a subspecies classification and its relationship with the extinct European cave wolf is not clear.

Praeovibos, also known as the giant muskox, is an extinct genus of bovid that contains a single species, Praeovibos priscus. This species used to be regarded as the ancestor to the modern muskox but new findings suggest that these two species may be the same age.

<span class="mw-page-title-main">Middle Arctic tundra</span> Tundra ecoregion of Canada

The Canadian Middle Arctic Tundra ecoregion covers a broad stretch of northern Canada - the southern islands of the Arctic Archipelago, plus the northern mainland of Nunavut and, across Hudson Bay to the east, a portion of northern Quebec. This is the coldest and driest ecoregion in Canada, and can be referred to as a 'polar desert'. It is an important region for breeding and migratory birds, and supports 80% of the world's muskox.

References