Quinn originally referred "Pliohippus" mexicanus to Dinohippus, but unpublished cladistic results in an SVP 2018 conference abstract suggest that mexicanus is instead more closely related to extant horses than to Dinohippus.[4]
Descriptionedit
Dinohippus was the most common horse in North America and like Equus, it did not have a dished face. It has a distinctive passive "stay apparatus" formed from bones and tendons to help it conserve energy while standing for long periods. Dinohippus was the first horse to show a rudimentary form of this character, providing additional evidence of the close relationship between Dinohippus and Equus.[5]Dinohippus was originally thought to be a monodactyl horse, but a 1981 fossil find in Nebraska shows that some were tridactyl.[6] The species D. leidyanus had an estimated body mass of approximately 200 kilograms (440 lb).[7]
Foot bones
Referencesedit
^. Archived from the original on 20 November 2021.
^Bruce J. MacFadden: Cenozoic Mammalian Herbivores from the Americas: Reconstructing Ancient Diets and Terrestrial Communities. Annual Review of Ecology and Systematics, Vol. 31, (2000), pp. 33-59
^. Archived from the original on 2020-11-11. Retrieved 2018-09-10.{{cite web}}: CS1 maint: archived copy as title (link)
^. Archived from the original on 2020-11-14. Retrieved 2006-11-06.
^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
February 15, 2024
dinohippus, greek, terrible, horse, extinct, equid, which, endemic, north, america, from, late, hemphillian, stage, miocene, through, zanclean, stage, pliocene, existence, approximately, million, years, fossils, widespread, throughout, north, america, being, f. Dinohippus Greek Terrible horse 1 is an extinct equid which was endemic to North America from the late Hemphillian stage of the Miocene through the Zanclean stage of the Pliocene 10 3 3 6 mya and in existence for approximately 6 7 million years 2 3 Fossils are widespread throughout North America being found at more than 30 sites from Florida to Alberta and Panama Alajuela Formation DinohippusTemporal range Middle Miocene Late Pliocene Hemphillian Blancan 10 3 3 6 Ma PreꞒ Ꞓ O S D C P T J K Pg NDinohippus leidyanus skeletonScientific classificationDomain EukaryotaKingdom AnimaliaPhylum ChordataClass MammaliaOrder PerissodactylaFamily EquidaeSubfamily EquinaeTribe EquiniGenus DinohippusQuinn 1955Type species Pliohippus leidyanusSpecies D edensis Frick 1924 D interpolatus Cope 1893 D leardi Drescher 1941 D leidyanus Osborn 1918 D mexicanus Lance 1950 D osborni Frick 1924 D pachyops Cope 1893 D subvenus Quinn 1955Taxonomy edit nbsp SkullQuinn originally referred Pliohippus mexicanus to Dinohippus but unpublished cladistic results in an SVP 2018 conference abstract suggest that mexicanus is instead more closely related to extant horses than to Dinohippus 4 Description editDinohippus was the most common horse in North America and like Equus it did not have a dished face It has a distinctive passive stay apparatus formed from bones and tendons to help it conserve energy while standing for long periods Dinohippus was the first horse to show a rudimentary form of this character providing additional evidence of the close relationship between Dinohippus and Equus 5 Dinohippus was originally thought to be a monodactyl horse but a 1981 fossil find in Nebraska shows that some were tridactyl 6 The species D leidyanus had an estimated body mass of approximately 200 kilograms 440 lb 7 nbsp Foot bonesReferences edit Glossary American Museum of Natural History Archived from the original on 20 November 2021 Paleobiology Database Dinohippus basic info Bruce J MacFadden Cenozoic Mammalian Herbivores from the Americas Reconstructing Ancient Diets and Terrestrial Communities Annual Review of Ecology and Systematics Vol 31 2000 pp 33 59 Archived copy Archived from the original on 2020 11 11 Retrieved 2018 09 10 a href Template Cite web html title Template Cite web cite web a CS1 maint archived copy as title link Florida Museum of Natural History Horse Ecology Archived from the original on 2020 11 14 Retrieved 2006 11 06 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 Retrieved from https en wikipedia org w index php title Dinohippus amp oldid 1191078549, wikipedia, wiki, book, books, library,
