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| fossil_range = {{Fossil range|Eocene}}
| fossil_range = {{Fossil range|Eocene}}
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| taxon = Leptoreodon
| taxon = Leptoreodon
| authority = Wortman (1898)
| authority = Wortman (1898)
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'''''Leptoreodon''''' is a small extinct [[genus]] of [[Artiodactyla]], of the family [[Protoceratidae]], endemic to [[North America]] from the [[Eocene]] epoch ([[Uintan]] to [[Duchesnean]] stage) 40.2—33.9 [[Annum|Ma]], existing for approximately {{Mya|40.2-33.9|million years}}.<ref>[http://paleodb.org/cgi-bin/bridge.pl?action=checkTaxonInfo&taxon_no=42576&is_real_user=1 PaleoBiology Database: ''Leptoreodon'', basic info]</ref>
'''''Leptoreodon''''' is a small extinct [[genus]] of [[Artiodactyla]], of the family [[Protoceratidae]], endemic to [[North America]] from the [[Eocene]] epoch ([[Uintan]] to [[Duchesnean]] stage) 40.2—33.9 [[Annum|Ma]], existing for approximately {{Mya|40.2-33.9|million years}}.<ref>[http://paleodb.org/cgi-bin/bridge.pl?action=checkTaxonInfo&taxon_no=42576&is_real_user=1 PaleoBiology Database: ''Leptoreodon'', basic info]</ref>

==Taxonomy==
==Taxonomy==
''Leptoreodon'' was named by Wortman (1898). It was assigned to [[Hypertragulidae]] by Peterson (1919); and to [[Protoceratidae]] by Wortman (1898), Carroll (1988), Prothero (1998) and Prothero and Ludtke (2007).<ref>O. A. Peterson. 1919. Annals of Carnegie Museum 12(2)</ref><ref>R. L. Carroll. 1988. Vertebrate Paleontology and Evolution. W. H. Freeman and Company, New York 1-698 </ref><ref>D. R. Prothero and J. A. Ludtke. 2007. Family Protoceratidae. in D. R. Prothero and S. Foss (eds.), The Evolution of Artiodactyls 169-176</ref>
''Leptoreodon'' was named by Wortman (1898). It was assigned to [[Hypertragulidae]] by Peterson (1919); and to [[Protoceratidae]] by Wortman (1898), Carroll (1988), Prothero (1998) and Prothero and Ludtke (2007).<ref>O. A. Peterson. 1919. Annals of Carnegie Museum 12(2)</ref><ref>R. L. Carroll. 1988. Vertebrate Paleontology and Evolution. W. H. Freeman and Company, New York 1-698</ref><ref>D. R. Prothero and J. A. Ludtke. 2007. Family Protoceratidae. in D. R. Prothero and S. Foss (eds.), The Evolution of Artiodactyls 169-176</ref>

==Morphology==
==Morphology==
''Leptoreodon'' resembled [[deer]]. However they were more closely related to [[camel|camelids]]. In addition to having horns in the more usual place, protoceratids had additional, [[Anatomical terms of location#Directional terms|rostral]] horns above the [[orbit (anatomy)|orbital cavity]].
''Leptoreodon'' resembled [[deer]]. However they were more closely related to [[camel]]ids. In addition to having horns in the more usual place, protoceratids had additional, [[Anatomical terms of location#Directional terms|rostral]] horns above the [[orbit (anatomy)|orbital cavity]].

===Body mass===
===Body mass===
Four fossil specimens of ''Prosynthetoceras'' were measured by M. Mendoza, C. M. Janis, and P. Palmqvist for [[body mass]].<ref>M. Mendoza, C. M. Janis, and P. Palmqvist. 2006. Estimating the body mass of extinct ungulates: a study on the use of multiple regression. Journal of Zoology 270(1):90-101</ref>
Four fossil specimens of ''Prosynthetoceras'' were measured by M. Mendoza, C. M. Janis, and P. Palmqvist for [[body mass]].<ref>M. Mendoza, C. M. Janis, and P. Palmqvist. 2006. Estimating the body mass of extinct ungulates: a study on the use of multiple regression. Journal of Zoology 270(1):90-101</ref>
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*Specimen 3: {{Convert|9.50|kg|lb|abbr=on|sigfig=2}}
*Specimen 3: {{Convert|9.50|kg|lb|abbr=on|sigfig=2}}
*Specimen 3: {{Convert|10.6|kg|lb|abbr=on|sigfig=2}}
*Specimen 3: {{Convert|10.6|kg|lb|abbr=on|sigfig=2}}

==Fossil distribution==
==Fossil distribution==
Fossils have been recovered from:
Fossils have been recovered from:
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*[[Webb County, Texas]]<ref>J. W. Westgate. 1988. Biostratigraphic implications of the first Eocene land-mammal fauna from the North American coastal plain. Geology 16:995-998</ref>
*[[Webb County, Texas]]<ref>J. W. Westgate. 1988. Biostratigraphic implications of the first Eocene land-mammal fauna from the North American coastal plain. Geology 16:995-998</ref>
*Swift Current Creek, [[Cypress Hills Formation]], [[Saskatchewan]]
*Swift Current Creek, [[Cypress Hills Formation]], [[Saskatchewan]]

== References ==
== References ==
{{reflist}}
{{Reflist}}


{{Wikispecies|Leptoreodon}}
{{Wikispecies|Leptoreodon}}

{{Taxonbar|from=Q6528296}}


[[Category:Protoceratids| ]]
[[Category:Protoceratids| ]]
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[[Category:Eocene mammals of North America]]
[[Category:Eocene mammals of North America]]
[[Category:Fossil taxa described in 1898]]
[[Category:Fossil taxa described in 1898]]


{{paleo-eventoedungulate-stub}}
{{paleo-eventoedungulate-stub}}

Revision as of 00:38, 22 March 2018

Leptoreodon
Temporal range: Eocene
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Artiodactyla
Family: Protoceratidae
Genus: Leptoreodon
Wortman (1898)

Leptoreodon is a small extinct genus of Artiodactyla, of the family Protoceratidae, endemic to North America from the Eocene epoch (Uintan to Duchesnean stage) 40.2—33.9 Ma, existing for approximately 6.3 million years.[1]

Taxonomy

Leptoreodon was named by Wortman (1898). It was assigned to Hypertragulidae by Peterson (1919); and to Protoceratidae by Wortman (1898), Carroll (1988), Prothero (1998) and Prothero and Ludtke (2007).[2][3][4]

Morphology

Leptoreodon resembled deer. However they were more closely related to camelids. In addition to having horns in the more usual place, protoceratids had additional, rostral horns above the orbital cavity.

Body mass

Four fossil specimens of Prosynthetoceras were measured by M. Mendoza, C. M. Janis, and P. Palmqvist for body mass.[5]

  • Specimen 1: 12.5 kg (28 lb)
  • Specimen 2: 10.3 kg (23 lb)
  • Specimen 3: 9.50 kg (21 lb)
  • Specimen 3: 10.6 kg (23 lb)

Fossil distribution

Fossils have been recovered from:

References

  1. ^ PaleoBiology Database: Leptoreodon, basic info
  2. ^ O. A. Peterson. 1919. Annals of Carnegie Museum 12(2)
  3. ^ R. L. Carroll. 1988. Vertebrate Paleontology and Evolution. W. H. Freeman and Company, New York 1-698
  4. ^ D. R. Prothero and J. A. Ludtke. 2007. Family Protoceratidae. in D. R. Prothero and S. Foss (eds.), The Evolution of Artiodactyls 169-176
  5. ^ M. Mendoza, C. M. Janis, and P. Palmqvist. 2006. Estimating the body mass of extinct ungulates: a study on the use of multiple regression. Journal of Zoology 270(1):90-101
  6. ^ J. W. Westgate. 1988. Biostratigraphic implications of the first Eocene land-mammal fauna from the North American coastal plain. Geology 16:995-998