On the occurrences of Opisthius richardsoni Kirby and Asaphidion yukonense Wickham (Coleoptera, Carabidae) as late Pleistocene fossils

A C Ashworth
D P Schwert

Published in Proceedings of the Entomological Society of Washington, in 1991, in volume 93, pages 511-514

Date published:1991

BHL: 16198184
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