Relationships of Microadapis sciureus (Stehlin, 1916), and two new primate genera from the Eocene of Switzerland.

Abstract

We review the fossil material from the Swiss middle Eocene site of Egerkingen allocated to Adapis sciureus and transferred to the new genus Microadapis. Three species at least are represented in this assemblage. Microadapis sciureus is represented only by the holotype, whose affinities appear to lie with the North American Smilodectes. Most of the original hypodigm is allocable to the new genus Simonsia, which does bear the affinities to Adapis suggested by earlier authors for sciureus. Two specimens are placed in the new genus, Chasselasia, which may be related to the extant galagids.