Publication Date
12-22-1965
Series Number
94
Abstract
Eighteen new specimens and seven of eight previously reported specimens of the coleoid fossil Actinosepia canadensis Whiteaves provide data for redescription and interpretation. The monotypic genus is known only from Late Campanian and Maastrichtian strata in the northern Great Plains region of the United States and Canada. Its gross morphology and shell structure require its inclusion in the teuthidid family Trachyteuthidae, but also suggest relationship, possibly ancestral, to the sepiids.
COinS