Probable marsupial footprints, exhibiting syndactyly of digits II and III of the pes, are described and placed into a new ichnogenus and species, Duquettichnus kooli. The type specimen is from the Cretaceous (late Aptian to early Albian) sediments of the Peace River canyon near Hudson Hope, British Columbia. This constitutes the first evidence for syndactyly among Mesozoic mammals, whose postcranial skeletons are very poorly known. It may well also constitute the earliest evidence for the presence of marsupials in Mesozoic North America.

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