Heptodon is an extinct genus of tapir-type herbivore of the family Helaletidae endemic to North America during the Early Eocene. It lived from 50.3—48.6 mya, existing for approximately 1.7 million years.[1]
Heptodon was about 1 metre (3.3 ft) in length, and closely resembled modern tapirs. The shape of the skull suggests that it probably lacked the characteristic tapir trunk. Instead it probably had a slightly elongated, fleshy upper lip, like its relative Helaletes.[2]
See also
References
- ^ Heptodon at fossilworks
- ^ Palmer, D., ed. (1999). The Marshall Illustrated Encyclopedia of Dinosaurs and Prehistoric Animals. London: Marshall Editions. p. 261. ISBN 1-84028-152-9.
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| Incertae sedis |
- †Ghazijhippus
- †Mesolambdolophus
- †Olbitherium
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| †Anthracobunia | | | †Anthracobunidae |
- Anthracobune
- Hsanotherium
- Jozaria
- Obergfellia
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| †Cambaytheriidae |
- Cambaytherium
- Kalitherium
- Nakusia
- Perissobune
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| †Brontotheriidae | |
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| Equoidea | |
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| †Hyopsodontidae? |
- Aletodon
- Chacomylus
- Dorraletes
- Haplaletes
- Haplomylus
- Hyopsodus
- Litomylus
- Louisina
- Monshyus
- Paratricuspiodon
- Paschatherium
- Phenacodaptes
- Tricuspiodon
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| †Phenacodontidae? | | | †Meniscotheriinae | |
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| †Phenacodontinae |
- Almogaver
- Copecion
- Eodesmatodon
- Lophocion
- Phenacodus
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| Tapiromorpha | |
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| Incertae sedis |
- †Cambaylophus
- †Skopaiolophus
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| †Isectolophidae |
- Chowliia
- Gandheralophus
- Karagalax
- Meridiolophus
- Orientolophus
- Sastrilophus
| | †Homogalaxinae | |
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| †Isectolophinae |
- Isectolophus
- Schizolophodon
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| †Ancylopoda | |
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| Ceratomorpha | |
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- †Breviodon
- †Fouchia
- †Minchenoletes
- †Siamolophus
- †Triplopus
- †Yimengia
| | †Indolophidae | |
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Rhinocerotoidea sensu stricto | | | †Hyrachyidae | |
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| †Eggysodontidae |
- Allacerops
- Eggysodon
- Guangnanodon
- Proeggysodon
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| †Hyracodontidae |
- Ardynia
- Ephyrachyus
- Epitriplophus
- Hyracodon
- Prohyracodon
- Rhodopagus
- Triplopides
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| †Amynodontidae |
- Amynodontopsis
- Armania
- Cadurcotherium
- Caenolophus
- Huananodon
- Hypsamynodon
- Procadurcodon
- Rostriamynodon
- Teilhardia
| | †Amynodontinae | | | †Cadurcodontini |
- Cadurcodon
- Lushiamynodon
- Sharamynodon
- Sianodon
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| †Metamynodontini |
- Gigantamynodon
- Megalamynodon
- Metamynodon
- Paramynodon
- Zaisanamynodon
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| †Paraceratheriidae | |
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| Rhinocerotidae | |
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- †Amphicaenopus
- †Epiaceratherium
- †Guixia
- †Teletaceras
- †Uintaceras
- †Woodoceras
| | †Aceratheriinae |
- Aceratherium
- Acerorhinus
- Alicornops
- Aphelops
- Chilotheridium
- Chilotherium
- Floridaceras
- Galushaceras
- Hoploaceratherium
- Mesaceratherium
- Peraceras
- Persiatherium
- Plesiaceratherium
- Ronzotherium
- Shansirhinus
- Sinorhinus
- Subchilotherium
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| †Elasmotheriinae | | | †Diceratheriini |
- Diceratherium
- Penetrigonias
- Skinneroceras
- Subhyracodon
- Trigonias
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| †Elasmotheriini |
- Bugtirhinus
- Caementodon
- Elasmotherium
- Hispanotherium
- Iranotherium
- Kenyatherium
- Meninatherium
- Menoceras
- Ninxiatherium
- Ningxiatherium
- Ougandatherium
- Parelasmotherium
- Procoelodonta
- Sinotherium
- Tongxinotherium
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| Rhinocerotinae |
- †Dromoceratherium
- †Lartetotherium
- †Molassitherium
- †Protaceratherium
| | †Teleoceratini |
- Aprotodon
- Brachydiceratherium
- Brachypotherium
- Diaceratherium
- Prosantorhinus
- Shennongtherium
- Teleoceras
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| Rhinocerotina | |
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Taxon identifiers |
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| Heptodon | |
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