Thomomys clusius(Rodentia: Geomyidae)

Multilocus phylogenetics of a rapid radiation in the genus Thomomys (Rodentia: Geomyidae).

Species complexes undergoing rapid radiation present a challenge in molecular systematics because of the possibility that ancestral polymorphism is retained in component gene trees. Coalescent theory has demonstrated that gene trees often fail to match lineage trees when taxon divergence times are less than the ancestral effective population sizes. Suggestions to increase the number of loci and...

Helminth Parasites of Thomomys bulbivorus (Richardson) (Rodentia: Geomyidae), with the Description of a New Species of Hymenolepis (Cestoda)

Geomys bursarius (Rodentia: Geomyidae)

Geomys bursarius (Shaw, 1800) is a geomyid commonly called the plains pocket gopher. A stocky rodent morphologically adapted for a fossorial life, it is 1 of 11 species in the genus Geomys. It occurs in southern Manitoba, Canada, and throughout the central United States southward to Texas. It prefers open grasslands and agricultural fields and is considered an economic pest. The subspecies G. b...

The Retractor Muscle of the Pouch in the Geomyidae.

THE RETRACTOR MUSCLE OF THE POUCH IN THE GEOMYIDAE THE retractor of the cheek pouch in the pocket gophers (Geomys bursarius, Thomomys bottae, Thornomys bulbivorus) and in the kangaroo rat (Dipodomys spectabilis) has been thought to represent the platysma,' 2 3 although it is more extensive and has a more caudal origin than in other mammals. It arises, in the pocket gophers, from the superficial...

WYOMING POCKET GOPHER (Thomomys clusius) SURVEYS IN SOUTH-CENTRAL WYOMING