英和和英

出典:『Wikipedia』 (2011/04/17 05:06 UTC 版)

英語による解説

引用

Didelphodon (meaning "opossum tooth") is a genus of stagodont marsupials from the Late Cretaceous of North America. Three species are known: Didelphodon vorax, D. padanicus, and D. coyi. Although perhaps little larger than a Virginia Opossum, it was one of the largest mammals of the Mesozoic. The teeth have specialized bladelike cusps and carnassial notches, indicating that the animal was a predator; the jaws are short and massive and bear enormous, bulbous premolar teeth which appear to have been used for crushing. Heavy wear on the teeth suggests a highly specialized diet. Didelphodon is known from the Hell Creek Formation of Montana, the Lance Formation of Wyoming, and the Scollard Formation of Alberta, where it is one of the most abundant mammals. The genus appears to descend from the Campanian Eodelphis, and in particular appears to be related to Eodelphis cutleri.