The Eocene Epoch, second of the five epochs into which the Tertiary Period is divided, lasted from 54 to 38 million years ago. Mammals became the dominant land animals during this epoch. The Eocene Epoch (meaning dawn of the recent period, from the...

The Eocene epoch (55.8 ± 0.2 - 33.9 ± 0.1 Ma) is a major division of the geologic timescale and the second epoch of the Palaeogene period in the Cenozoic era. The Eocene spans the time from the end of the Paleocene epoch to the beginning of the...

ABSTRACT-Fourteen species of echinoids ranging in age from early to late Eocene, including four new species, are described from Texas. New taxa include Schizaster (Schizaster) caddoensis from the Reklaw and Weches Formations (Claiborne Group, middle Eocene), Schizaster (Schizaster) stenzeli and Eupatagus texanus from the...

Journal, Vol. 163, 2006, pp. 401-415 Jerry Hooker, Margaret Collinson, Stephen Grimes, Nick SiIIe & David Mattey write: Recognition of the Eocene-Oligocene boundary in the Hampshire Basin, UK, has been debated since naming of the Oligocene Epoch in 1854. Previously, this was because...

A team of anthropologists said their study of South Texas fossil deposits revealed evidence including ancient teeth that shows the area was home to numerous types of primates 42 million years ago.Lamar University Professor Jim Westgate and two colleagues announced the discovery of three new...