title: Conchostracans: Living and Fossil from Chihuahua and Sonora, Mexico.
abstract: In August 1963, living conchostracans (branchipod Crustacea) of the genera Leptestheria and Eulimnadia were collected at three stations in Chihuahua. One Sonoran locality yielded Triassic fossils of the family Cyzicidae, a widespread North American group. The geographic rangeof the geologically younger families Leptestheriidae and Limnadidae (particularly the genus Eulimnadia) thus extended to Chihuahua during post-Mesozoic time.
authors.forename: P
authors.initials: P
authors.lastname: Tasch
authors.forename: B L
authors.initials: BL
authors.lastname: Shaffer