Geology Reports⌕ Search

Geology topics

Don E. Wilson

Publications and source records attributed to Don E. Wilson.

At least 19 recordsLinked to original sources
USGS2016

A new species of Myotis (Chiroptera: Vespertilionidae) from Suriname

We describe a new species of bat in the genus Myotis (Vespertilionidae: Myotinae) from the district of Sipaliwini, Suriname. The new species ( Myotis clydejonesi sp. nov.), known from a single specimen, is sister to a clade of M. nigricans (Schinz) from southern South America, but differs from all Neotropical species of Myotis in qualitative and quantitative morphological characters and in its cytochrome- b gene sequence. Our findings also indicate that M. nigricans remains composite and provide support for restricting M. nigricans (sensu stricto) to southern South America.

Raleigh Falls↗
USGS1991

Geographic variation in sea otters, Enhydra lutris

Univariate and multivariate analyses of 20 skull characters of 304 adult sea otters from throughout the geographic range strongly suggest that three subspecies should be recognized. The nominate form, Enhydra lutris lutris , occurs from the Kuril Islands north to the Commander Islands in the western Pacific Ocean. Individuals of E. l. lutris are characterized by large size and wide skulls with short nasal bones. E. l. nereis is found along the California coast and off San Nicolas Island, where the species recently has been reintroduced from coastal California. Specimens of E. l. nereis have narrow skulls with a long rostrum and small teeth, and usually lack the characteristic notch in the postorbital region found in most specimens of the other two subspecies. A new subspecies described by Don E. Wilson in this report, occurs throughout the Aleutian Islands and southward in the eastern Pacific to Washington. Specimens of the new subspecies are intermediate in size in most, but not all, characters and have longer mandibles than either of the other two subspecies.

Journal of Mammalogy↗