Hyracodon: Difference between revisions
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{{Italic title}} |
{{Italic title}} |
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{{Taxobox |
{{Taxobox |
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|fossil_range = {{Fossil range|Middle Eocene|Late Oligocene}} |
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|image = Hyracodon nebraskensis.jpg |
|image = Hyracodon nebraskensis.jpg |
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|image_width = 250px |
|image_width = 250px |
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|image_caption = Skeleton in [[Natural History Museum of Los Angeles]] |
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|regnum = [[Animal]]ia |
|regnum = [[Animal]]ia |
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|phylum = [[Chordata]] |
|phylum = [[Chordata]] |
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|familia = †[[Hyracodontidae]] |
|familia = †[[Hyracodontidae]] |
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|subfamilia = '''Hyracodontinae''' |
|subfamilia = '''Hyracodontinae''' |
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|genus = '''''Hyracodon'''''<ref name=McK&B>{{cite book |author1=McKenna, M. C |author2=S. K. |
|genus = '''''Hyracodon'''''<ref name=McK&B>{{cite book |author1=McKenna, M. C |author2=Bell, S. K. |year =1997 |title=Classification of Mammals above the Species Level |publisher=Columbia University Press |isbn = 0-231-11012-X}}</ref> |
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|genus_authority = [[Joseph Leidy|Leidy]], 1856 |
|genus_authority = [[Joseph Leidy|Leidy]], 1856 |
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|subdivision_ranks = Species |
|subdivision_ranks = Species |
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* †''H. priscidens'' |
* †''H. priscidens'' |
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'''''Hyracodon''''' ('[[hyrax]] tooth') is an extinct genus of mammal. |
'''''Hyracodon''''' ('[[hyrax]] tooth') is an extinct genus of mammal. |
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[[File:Knight Hyracodon.jpg|thumb|left|[[Charles R. Knight]] restoration]] |
[[File:Knight Hyracodon.jpg|thumb|left|[[Charles R. Knight]] restoration]] |
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[[File:Hyracodon.jpg|thumb|left|Restoration by [[Heinrich Harder]]]] |
[[File:Hyracodon.jpg|thumb|left|Restoration by [[Heinrich Harder]]]] |
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It was a lightly built, [[pony]]-like mammal of about 1.5 m (5 ft) long. ''Hyracodon'''s [[skull]] was large in comparison to the rest of the body. ''Hyracodon's'' [[dentition]] resembled that of later [[rhinoceroses]], but it was a much smaller animal and differed very little in appearance from the primitive horses of which it was a contemporary ( |
It was a lightly built, [[pony]]-like mammal of about 1.5 m (5 ft) long. ''Hyracodon'''s [[skull]] was large in comparison to the rest of the body. ''Hyracodon's'' [[dentition]] resembled that of later [[rhinoceroses]], but it was a much smaller animal and differed very little in appearance from the primitive horses of which it was a contemporary (32–26 million years ago). It had a short, broad snout and its long, slender limbs had three digits.<ref name=EoDP>{{cite book |editor=Palmer, D. |year=1999 |title= The Marshall Illustrated Encyclopedia of Dinosaurs and Prehistoric Animals |publisher= Marshall Editions |location=London |pages=283–284 |isbn=1-84028-152-9}}</ref> |
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Like the primitive horses, [[hyracodontidae|hyracodont]]s inhabited open forests and wooded steppes and turned from browsing foliage to grazing grass. They died out without leaving any descendants and they mark the end of the phylogenetic branch of hornless, running rhinoceroses. |
Like the primitive horses, [[hyracodontidae|hyracodont]]s inhabited open forests and wooded steppes and turned from browsing foliage to grazing grass. They died out without leaving any descendants and they mark the end of the phylogenetic branch of hornless, running rhinoceroses. |
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==References== |
==References== |
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{{Reflist}} |
{{Reflist}} |
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* Benes, Josef |
* {{cite book |author=Benes, Josef |year=1979 |title=Prehistoric Animals and Plants |page=220 |location=Prague, CZ |publisher=Artua}} |
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{{Taxonbar|from=Q930000}} |
{{Taxonbar|from=Q930000}} |
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Revision as of 07:49, 9 July 2018
| Hyracodon Temporal range:
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| Skeleton in Natural History Museum of Los Angeles | |
| Scientific classification | |
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| Subfamily: | Hyracodontinae
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| Genus: | Hyracodon[1] Leidy, 1856
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| Species | |
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Hyracodon ('hyrax tooth') is an extinct genus of mammal.
It was a lightly built, pony-like mammal of about 1.5 m (5 ft) long. Hyracodon's skull was large in comparison to the rest of the body. Hyracodon's dentition resembled that of later rhinoceroses, but it was a much smaller animal and differed very little in appearance from the primitive horses of which it was a contemporary (32–26 million years ago). It had a short, broad snout and its long, slender limbs had three digits.[2]
Like the primitive horses, hyracodonts inhabited open forests and wooded steppes and turned from browsing foliage to grazing grass. They died out without leaving any descendants and they mark the end of the phylogenetic branch of hornless, running rhinoceroses.
This small, fast-running creature was a close relative of the largest land mammal that ever lived, the 8 m (26 ft) long Paraceratherium.
References
- ^ McKenna, M. C; Bell, S. K. (1997). Classification of Mammals above the Species Level. Columbia University Press. ISBN 0-231-11012-X.
- ^ Palmer, D., ed. (1999). The Marshall Illustrated Encyclopedia of Dinosaurs and Prehistoric Animals. London: Marshall Editions. pp. 283–284. ISBN 1-84028-152-9.
- Benes, Josef (1979). Prehistoric Animals and Plants. Prague, CZ: Artua. p. 220.
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