Species of the early Paleocene (Puercan North American Land Mammal Age) triisodontid Eoconodon were among the first eutherians in the northern Western Interior to evolve body masses significantly larger than those of the latest Cretaceous mammals of the area. Description of additional specimens of Eoconodon nidhoggi from the Tullock Formation, northeastern Montana, sets the stage for formal diagnosis of a new species of Eoconodon, E. ginibitohia sp. nov., in the Betonnie-Tsosie local fauna, Puercan 2, Hemithlaeus kowalevskianu–Taeniolabis taoensis Zone, San Juan Basin, New Mexico. The taxonomic diversity of the species of Eoconodon as well as their stratigraphic and biogeographic ranges support the hypothesis that the first representatives of the clade entered the Western Interior at the beginning of the Puercan as immigrants from currently poorly sampled areas probably in North America or Asia. During the Puercan the clade both diversified and expanded its biogeographic range in the Western Interior.
You have requested a machine translation of selected content from our databases. This functionality is provided solely for your convenience and is in no way intended to replace human translation. Neither BioOne nor the owners and publishers of the content make, and they explicitly disclaim, any express or implied representations or warranties of any kind, including, without limitation, representations and warranties as to the functionality of the translation feature or the accuracy or completeness of the translations.
Translations are not retained in our system. Your use of this feature and the translations is subject to all use restrictions contained in the Terms and Conditions of Use of the BioOne website.
Vol. 25 • No. 1