A new species of Carpolestidae, Carpocristes rose!, is described from a middle Tiffanian locality in the Bison Basin, Fremont County, Wyoming. A phylogenetic analysis of all known carpolestid species identifies C. rosei as the most basal member of Carpocristes, a genus known from Tiffanian localities in North America and the Bumbanian Wutu Formation, Shandong Province, People's Republic of China. Available biostratigraphic and phylogenetic data suggest that Carpocristes originated in North America.
No takes yet. Share an insight, caveat, or question.
K. Christopher Beard (2000) studied this question.
Synapse has enriched 5 related papers. Consider them for comparative context: