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Title: The systematic arrangement of the order Perissodactyla
Author(s): Cope, E.D.
Year published: 1881
Journal: Proceedings of the American Philosophical Society
Volume: 19
Pages: 377-401, figs. 1-2, tables 1-3
File: View PDF: 650,9 kb
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World
Taxonomy - Evolution
All Rhino Species
There is a graduated series, with successive modifications of four parts of the skeleton: 1. reduction of the number of toes on anterior foot 2. reduction in the number and development of the canine and incisor teeth 3. degree of closure of the meatus auditorius externus below 4. development ...
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Location:
Subject:
Species:
World
Taxonomy
All Rhino Species
Rhinoceridae
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Location:
Subject:
Species:
World
Taxonomy
All Rhino Species
Key to genera 1. Four anterior digits; incisors 2/1, canine 0/1, no horn, posttympanic bone distinct = Aceratherium. 2. Three anterior digits a. Posttympanic process not co?ssified with postglenoid Incisors 2/1, canines 0/1, no dermal horn = Coenopus Incisors 1/1, canines 0/...
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