Palaeolagus: Difference between revisions
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{{Short description|Extinct genus of lagomorph}} |
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{{Taxobox |
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{{Automatic taxobox |
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| fossil_range = Late [[Eocene]] to [[Oligocene]],<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|page= 285|isbn= 1-84028-152-9}}</ref> {{fossilrange|35|23}} |
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| image = Paleolagus.jpg |
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|status = fossil |
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| image_caption = ''Palaeolagus haydeni'' |
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|fossil_range = [[Oligocene]] |
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|regnum = [[Animal]]ia |
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|phylum = [[Chordata]] |
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|classis = [[Mammalia]] |
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|ordo = [[Lagomorpha]] |
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* {{extinct}}''P. burkei'' |
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|familia = [[Leporidae]] |
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* {{extinct}}''P. haydeni'' |
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* {{extinct}}''P. hemirhizis'' |
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* ''P. |
* {{extinct}}''P. philoi'' |
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* ''P. |
* {{extinct}}''P. primus'' |
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* ''P. |
* {{extinct}}''P. temnodon'' |
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* ''P. philoi'' |
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* ''P. primus'' |
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* ''P. temnodon'' |
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}} |
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'''''Palaeolagus''''' ('ancient hare') is an extinct genus of lagomorph. |
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'''''Palaeolagus''''' ('ancient hare') is an extinct genus of [[lagomorpha|lagomorph]].<ref>{{cite web | last = Haaramo | first = Mikko | title = Mikko's Phylogeny archive | date = 2008-03-11 | url = http://www.helsinki.fi/~mhaaramo/metazoa/deuterostoma/chordata/synapsida/eutheria/lagomorpha/leporidae.html |
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The 25 cm (10 in) long creature closely resembled modern [[rabbit]]s, but its shorter hind legs indicated it wasn't able to hop. |
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| access-date = 2009-02-01}}</ref> ''Palaeolagus'' lived in the [[Eocene]]<ref>{{cite web | url=http://www.fossilworks.org/cgi-bin/bridge.pl?a=collectionSearch&taxon_no=49656&max_interval=Eocene&country=United%20States&state=Nebraska&is_real_user=1&basic=yes&type=view&match_subgenera=1 | archive-url=https://web.archive.org/web/20220121232926/http://www.fossilworks.org/cgi-bin/bridge.pl?a=collectionSearch&taxon_no=49656&max_interval=Eocene&country=United%20States&state=Nebraska&is_real_user=1&basic=yes&type=view&match_subgenera=1 | url-status=dead | archive-date=January 21, 2022 | title=Fossilworks: Gateway to the Paleobiology Database }}</ref> and [[Oligocene]] epochs of North America, |
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Lagomorphs have two pairs of gnawing teeth (incisors), one immediately behind the other, in the upper jaws compared to a single pair in rodents. The chewing action is also different between the two groups, in lagomorphs the jaws work sideways and in rodents, the jaws work backward and forward. Palaeolagus was similar in appearance to the modern rabbit except its hind legs were proportionally shorter which suggests that they were more adapted for scampering, similar to a ground squirrel, than hopping. Palaeolagus grew to lengths of about 10 inches<ref>https://www.dmr.nd.gov/ndfossil/Poster/PDF/Palaeolagus.pdf</ref>. |
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==Taxonomy== |
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The fossil remains of rabbits are scanty and those specimens that have been found are often too fragmentary to determine satisfactory the relationship with living forms. Most recent phylogenetic analysis have recovered it as a close relative of the last common ancestor of living [[Leporidae]] and [[Ochotonidae]], as it displays a [[Mosaic evolution|mosaic]] of characters typical of both groups.<ref>{{Cite journal|last1=Wolniewicz|first1=Andrzej S.|last2=Fostowicz-Frelik|first2=Łucja|date=2021|title=CT-Informed Skull Osteology of Palaeolagus haydeni (Mammalia: Lagomorpha) and Its Bearing on the Reconstruction of the Early Lagomorph Body Plan|journal=Frontiers in Ecology and Evolution|language=English|volume=9|doi=10.3389/fevo.2021.634757|issn=2296-701X|doi-access=free}}</ref> The bones of rabbits and hares are lightweight and fragile in structure, and so they are not easily preserved as fossils. Most of the species are inhabitants of uplands where conditions are not ideal for preservation. In a few deposits, rabbit remains seem numerous but many fossil species are known only from a few teeth and bones. |
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{{unreferenced|article|date=November 2006}}<!-- Do not remove this notice until all facts in the article are cited properly. --> |
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==Description== |
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The {{convert|25|cm|in}} long creature closely resembled modern [[rabbit]]s. They were common herbivorous inhabitants of the savanna, plains and woodlands of North America 30 million years ago.{{cn|date=December 2023}} |
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==Gallery== |
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<gallery mode=packed> |
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File:Palaeolagus haydeni skull.jpg|left|''P. haydeni'' skull |
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File:Palaeolagus NT small.jpg|left|Restoration of ''P. haydeni'' |
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</gallery> |
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==References== |
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{{Reflist}} |
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{{Lagomorpha Genera|Le.|state=collapsed}} |
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{{Taxonbar|from=Q2609484}} |
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{{Portal|Paleontology}} |
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[[Category:Paleogene mammals of North America]] |
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[[Category:White River Fauna]] |
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[[Category:Prehistoric placental genera]] |
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[[Category:Oligocene extinctions]] |
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[[Category:Fossil taxa described in 1856]] |
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[[Category:Oligocene mammals]] |
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{{lagomorph-stub}} |
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Latest revision as of 04:52, 19 November 2024
| Palaeolagus | |
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| Palaeolagus haydeni | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Mammalia |
| Order: | Lagomorpha |
| Genus: | †Palaeolagus Leidy, 1856 |
| Species | |
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Palaeolagus ('ancient hare') is an extinct genus of lagomorph.[2] Palaeolagus lived in the Eocene[3] and Oligocene epochs of North America,
Taxonomy
[edit]The fossil remains of rabbits are scanty and those specimens that have been found are often too fragmentary to determine satisfactory the relationship with living forms. Most recent phylogenetic analysis have recovered it as a close relative of the last common ancestor of living Leporidae and Ochotonidae, as it displays a mosaic of characters typical of both groups.[4] The bones of rabbits and hares are lightweight and fragile in structure, and so they are not easily preserved as fossils. Most of the species are inhabitants of uplands where conditions are not ideal for preservation. In a few deposits, rabbit remains seem numerous but many fossil species are known only from a few teeth and bones.
Description
[edit]The 25 centimetres (9.8 in) long creature closely resembled modern rabbits. They were common herbivorous inhabitants of the savanna, plains and woodlands of North America 30 million years ago.[citation needed]
Gallery
[edit]-
P. haydeni skull -
Restoration of P. haydeni
References
[edit]- ^ Palmer, D., ed. (1999). The Marshall Illustrated Encyclopedia of Dinosaurs and Prehistoric Animals. London: Marshall Editions. p. 285. ISBN 1-84028-152-9.
- ^ Haaramo, Mikko (2008-03-11). "Mikko's Phylogeny archive". Retrieved 2009-02-01.
- ^ "Fossilworks: Gateway to the Paleobiology Database". Archived from the original on January 21, 2022.
- ^ Wolniewicz, Andrzej S.; Fostowicz-Frelik, Łucja (2021). "CT-Informed Skull Osteology of Palaeolagus haydeni (Mammalia: Lagomorpha) and Its Bearing on the Reconstruction of the Early Lagomorph Body Plan". Frontiers in Ecology and Evolution. 9. doi:10.3389/fevo.2021.634757. ISSN 2296-701X.
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