Trigonias
| Trigonias Intervalo temporal: Eoceno Superior[1]
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|---|---|
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| T. osborni | |
Classificação científica 
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| Reino: | Animalia |
| Filo: | Chordata |
| Classe: | Mammalia |
| Ordem: | Perissodactyla |
| Família: | Rhinocerotidae |
| Gênero: | †Trigonias Lucas, 1900 |
| Espécie-tipo | |
| †Trigonias osborni | |
| Espécies[2] | |
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| Sinónimos | |
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Trigonias é um gênero extinto de rinoceronte do Eoceno superior (Chadroniano).Viveu há 35 milhões de anos na América do Norte (Prothero, 2005).
É o rinoceronte mais velho de que um esqueleto bem-preservado foi encontrado. Trigonias tinha aproximadamente 2.5 m (8 pés) Seus pés dianteiros tiveram cinco dedos (contrastse com os três em rinocerontes modernos).O quinto dedo é vestigial.
Referências
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