| 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. |
