Argentodites Jesse Russell

ISBN: 9785510560909

Published: May 8th 2012

Paperback

152 pages


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Argentodites  by  Jesse Russell

Argentodites by Jesse Russell
May 8th 2012 | Paperback | PDF, EPUB, FB2, DjVu, AUDIO, mp3, ZIP | 152 pages | ISBN: 9785510560909 | 7.71 Mb

High Quality Content by WIKIPEDIA articles! Argentodites is a possible multituberculate mammal from the Cretaceous of Argentina. The single species, Argentodites coloniensis, is known from a single blade-like fourth lower premolar (p4) from the LaMoreHigh Quality Content by WIKIPEDIA articles!

Argentodites is a possible multituberculate mammal from the Cretaceous of Argentina. The single species, Argentodites coloniensis, is known from a single blade-like fourth lower premolar (p4) from the La Colonia Formation, which is mostly or entirely Maastrichtian (latest Cretaceous) in age. The p4 is 4.15 mm long and bears eight cusps on its upper margin and long associated ridges on both sides.

The enamel consists of prisms that are completely or partly surrounded by a sheath and that are on average 6.57 m apart. Zofia Kielan-Jaworowska, who described and named the fossil in 2007, regarded it as a multituberculate, perhaps a cimolodontan-and thus, a member of a mostly Laurasian (northern) group and an immigrant to Argentina from North America-on the basis of the shape of the tooth and features of its enamel.

In 2009, however, two teams argued that Argentodites may in fact be close to or identical with Ferugliotherium, a member of the small Gondwanan (southern) group Gondwanatheria- although their relationships are disputed, gondwanatheres may themselves be multituberculates.



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