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Aceratherium - Wikipedia

From Wikipedia, the free encyclopedia

Aceratherium Temporal range: Miocene PreꞒ Ꞓ O S D C P T J K Pg N

A. incisivum skull
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Order:	Perissodactyla
Family:	Rhinocerotidae
Subfamily:	†Aceratheriinae
Genus:	†Aceratherium Kaup, 1832
Type species
†Aceratherium incisivum Cuvier, 1822
Species
A. depereti Borissiak, 1927 A. incisivum A. porpani^[1] Deng, Hanta & Jintasakul, 2013

Aceratherium (Greek: "without (a) horn" (keratos), "beast" (therion)^[2]) is an extinct genus of rhinocerotid of the subfamily Aceratheriinae that lived in Eurasia during the Miocene.

Taxonomy

Aceratherium was coined by Kaup (1832) for "Rhinoceros" incisivum Cuvier, 1822 on the basis of the similarity of two skulls from Eppelsheim, Germany to the holotype incisor tooth from Weisenau in dental structure.^[3] However, the tooth from Weisenau has been recognized as belonging to a member of Teleoceratini, although the name Aceratherium has been widely used for the Eppelsheim skulls.^[4] Traditionally, many species have been referred to Aceratherium on the basis of them being hornless, turning the genus into a wastebasket. Revisions over the years have removed most species to the point that there are now only three valid species generally recognized (A. incisivum, A. depereti, and A. porpani).

Description

Aceratherium reached 2.3 m (7 ft 7 in) in length, a height of about 120 cm (47 in) and a weight of nearly 1 ton.^[5] Its brachyodont dentition suggests it was a browser which fed on leaves and soft vegetables,^[6] though more recent analyses suggest that A. incisivum was actually a grazer.^[7] It had fairly long limbs compared to other Aceratheriinae, and was proportioned similar to a tapir. Males had tusk-like incisors that were much larger than those of the females.^[6]

References

^ Tao Deng; Rattanaphorn Hanta & Pratueng Jintasakul (2013). "A new species of Aceratherium (Rhinocerotidae, Perissodactyla) from the late Miocene of Nakhon Ratchasima, northeastern Thailand". Journal of Vertebrate Paleontology. 33 (4): 977–985. Bibcode:2013JVPal..33..977D. doi:10.1080/02724634.2013.748058. S2CID 84438829.
^ "Glossary. American Museum of Natural History". Archived from the original on 20 November 2021.
^ Kaup J. J. (1832). "Über Rhinoceros incisivus Cuvier und eine neue Art, Rhinoceros schleiermacheri" [Concerning Rhinoceros incisivus Cuvier and a new species, Rhinoceros schleiermacheri]. Isis von Oken (in German). 8: 898–904.
^ Giaourtsakis, I. X., and K. Heissig. 2004. On the nomenclatural status of Aceratherium incisivum (Rhinocerotidae, Mammalia); pp. 314–317 in A. A. Chatzipetros and S. B. Pavlides (eds.), Proceedings of 5th International Symposium on Eastern Mediterranean Geology, Volume1, 14–20 April 2004, Thessaloniki, Greece. Aristotle University, Thessaloniki.
^ Esperanza Cerdeño and Begoña Sánchez: Intraspecific variation and evolutionary trends of Alicornops simorrense (Rhinocerotidae) in Spain. The Norwegian Academy of Science and Letters Zoologica Scripta 29 (4. October), 2000, p. 275–305
^ ^a ^b Agustí, Jordi; Antón, Mauricio (2002). Mammoths, Sabertooths, and Hominids: 65 Million Years of Mammalian Evolution in Europe. Columbia University Press. p. 157. ISBN 9780231116411.
^ Rivals, Florent; Belyaev, Ruslan I.; Basova, Vera B.; Prilepskaya, Natalya E. (15 May 2024). "A tale from the Neogene savanna: Paleoecology of the hipparion fauna in the northern Black Sea region during the late Miocene". Palaeogeography, Palaeoclimatology, Palaeoecology. 642: 112133. doi:10.1016/j.palaeo.2024.112133. Retrieved 30 August 2024 – via Elsevier Science Direct.

Perissodactyla

Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Perissodactyla

Perissodactyla

Incertae sedis

†Anthracobunia

Radinskya
†Anthracobunidae	Anthracobune Hsanotherium Jozaria Obergfellia
†Cambaytheriidae	Cambaytherium Kalitherium Nakusia Perissobune

†Brontotheriidae

- See Brontotheriidae

Equoidea

Equidae

- See Equidae

†Palaeotheriidae

†Pachynolophinae	Anchilophus Bepitherium Eurohippus Hyracotherium Lijiangia Lophiohippus Lophiotherium Metanchilophus Orolophus Pachynolophus Paranchilophus Propalaeotherium Qianohippus
†Palaeotheriinae	Cantabrotherium Iberolophus Idiodontherium Leptolophus Mekodontherium Metaplagiolophus Palaeotherium Paraplagiolophus Plagiolophus Pseudopalaeotherium

†Hyopsodontidae?

†Phenacodontidae?

Tetraclaenodon
†Meniscotheriinae	Ectocion Meniscotherium
†Phenacodontinae	Almogaver Copecion Eodesmatodon Lophocion Phenacodus

Tapiromorpha

- See below↓

Tapiromorpha

Incertae sedis

†Cambaylophus
†Skopaiolophus

†Isectolophidae

Chowliia Gandheralophus Karagalax Meridiolophus Orientolophus Sastrilophus
†Homogalaxinae	Homogalax
†Isectolophinae	Isectolophus Schizolophodon

†Ancylopoda

- See Ancylopoda

Ceratomorpha

Tapiroidea

†Deperetellidae	Bahinolophus Deperetella Irenolophus Teleolophus
†Helaletidae	Colodon Dilophodon Helaletes Heptodon Heteraletes Paracolodon Plesiocolopirus Thuliadanta? Vastanolophus
Tapiridae	†Eotapirus †Miotapirus †Nexuotapirus †Paratapirus †Plesiotapirus †Protapirus †Tapiravus Tapirus

Rhinocerotoidea

- See below↓

Rhinocerotoidea

Rhinocerotoidea sensu lato

†Breviodon
†Fouchia
†Minchenoletes
†Siamolophus
†Triplopus
†Yimengia

†Indolophidae

Indolophus

Rhinocerotoidea
sensu stricto

†Selenaletes

†Hyrachyidae

Hyrachyus

Amynodon
†Cadurcodontini	Cadurcodon Lushiamynodon Sharamynodon Sianodon
†Metamynodontini	Gigantamynodon Megalamynodon Metamynodon Paramynodon Zaisanamynodon

†Paraceratheriidae

†Forstercooperiinae	Forstercooperia Gobicerops Pappaceras
†Paraceratheriinae	Aralotherium Dzungarotherium Juxia Paraceratherium Urtinotherium

Rhinocerotidae

- See below↓

Rhinocerotidae

†Aceratheriinae

†Elasmotheriinae

Gulfoceras Victoriaceros
†Diceratheriini	Diceratherium Penetrigonias Skinneroceras Subhyracodon Trigonias
†Elasmotheriini	Bugtirhinus Caementodon Elasmotherium Hispanotherium Iranotherium Kenyatherium Meninatherium Menoceras Ninxiatherium Ningxiatherium Ougandatherium Parelasmotherium Procoelodonta Sinotherium Tongxinotherium

Rhinocerotinae

†Teleoceratini

Rhinocerotina

Dicerorhinini	†Coelodonta Dicerorhinus †Dihoplus †Pliorhinus †Stephanorhinus
Dicerotini	Ceratotherium Diceros †Miodiceros †Paradiceros
Rhinocerotini	†Gaindatherium †Nesorhinus Rhinoceros †Rusingaceros

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