3 min read At the dawn of the Paleogene—the beginning of the Cenozoic era—dinosaurs, pterosaurs, and giant marine reptiles were conspicuously absent from the face of the Earth. Rodent-size ...
Covert, H.H. Biology of early Cenozoic primates ... J.C. Two new fossil vertebrate localities in the Santa Cruz Formation (late early-early middle Eocene, Argentina), ~51º South latitude.