SCi^y^lfi^^ f-euyj^w/«v/ Bulletin of the Mizunami Fossil Museum, no. 28 (2001), p. 173-210, 19 figs., 3 tables. New Cretaceous and Tertiary decapod crustaceans from western North America Carrie E. Schweitzer and Rodney M. Feldmann Department of Geology, Kent State University, Kent, OH 44242, U.S.A. <
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[email protected]> Abstract Several new decapod crustaceans have been recovered from Cretaceous and Tertiary rocks of west- em North America. New species include Palaeastacus trisulcatus, Glyphea micheleae, Hoploparia tshudyi, Ctenocheles hokoensis, Callianopsis ? inornatus, Palaeopentacheles? starri, Eucorystes platys, Archaeopus lunicarina, Brecanclawu rathbunae gen. nov. amd sp. nov., Pagurus malloryi, Paguristes hokoensis. One new combination has resulted from this work, Paguristes subaequalis comb. nov. (Rathbun, 1926). Family level diagnostic characters of the chelae are given for each paguroid family; chelae are the only portion of paguroid decapods commonly preserved in the fossil record. Palaeopentacheles and Eucorystes appear to have had north polar distributions, and Glyphea and Palaeastacus have bipolar or amphitropical distributions, corroborating the patterns observed by Schweitzer (2001) for Cretaceous and Tertiary decapods of the North Pacific rim. Key words: Cretaceous, Cenozoic, Decapoda, North America Introduction much of that material was made available to us for study. Their collections were supplemented by those of geologists The history of study of fossil decapod crustaceans on the working in Alaska, often under the auspices of the U. S. west coast of North America has been disjunct. Several Geological Survey or petroleum companies. Numerous studies in the latter part of the lO"" Century and the early papers, cited in the work to follow, have resulted from the 20* Century resulted in the recognition of fossil decapods study of this material.