A single carapace and its counterpart of an erymoid lobster collected from the Middle Jurassic Smithers Formation in British Columbia, permits description of a new species, Eryma walkerae. The specimen represents only the fourth species of Eryma described from North America and documents a north polar route of dispersal for erymids into North America.
Canadian Journal of Earth Sciences
Feldmann, Rodney; Haggart, James W. (2007). A New Species of Lobster (Astacidea, Erymidae) from the Smithers Formation (Middle Jurassic) of British Columbia, Canada. Canadian Journal of Earth Sciences 44(12) 1791-1796. doi: 10.1139/E07-058. Retrieved from https://oaks.kent.edu/geolpubs/123