… in 425 families and 46 orders, Malcolm C. McKenna and Susan K. Bell's Classification of …
McKenna inherited the project from Simpson and, with Bell, has constructed a completely …

Periodically it is worthwhile to assess our knowledge and understanding of mammalian
phylogeny and one of its expressions, classification. This short paper is yet another attempt to do …

Most orders and many families of modern mammals were established during the Palaeogene.
Mammalian evolution during this period of time has been correlated with global climatic …

Rearrangement of landmass configurations has profoundly affected the evolution of mammals
and other organisms in the Northern Hemisphere. At the north end of the Atlantic Ocean, …

" The earliest Tertiary mammalian fauna known from Asia occurs in southern Mongolia,
where it is found in late Paleocene sediments approximately 55 million years old exposed at …

Until recently American vertebrate paleontologists, particularly students of fossil mammals,
have not generally accepted the concept of a former continuous land area around the north …

An embryonic skeleton of a nonavian theropod dinosaur was found preserved in an egg
from Upper Cretaceous rocks in the Gobi Desert of Mongolia. Cranial features identify the …

We describe several fossils referable to Gomphos elkema from deposits close to the
Paleocene-Eocene boundary at Tsagan Khushu, Mongolia. Gomphos shares a suite of …

Until a few decades ago, phylogenetic relationships among placental orders were ambiguous
and usually depicted to radiate as an unresolved “bush.” Resolution of this bush by …

Herein we describe a new, large-bodied species of Pseudoglyptodon , a close sloth ally, from
volcaniclastic deposits of the Abanico ( = Coya-Machalí) Formation of the central Chilean …