Branchioplax is an extinct genus of crab which existed in Alaska and Washington during the Eocene period. It was first named by Mary Rathbun in 1916, and contains ten species, including Branchioplax washingtoniana from the Hoko River Formation,Page 86, Bulletin: Geological section, Volume 31, Issues 1-3. By Moskovskoe obshchestvo ispytateleĭ prirody. Israel Program for Scientific Translations., 1961 Branchioplax carmanahensis,Page 66, Cretaceous and eocene decapod crustaceans from southern Vancouver Island, British Columbia, Canada. NRC monograph publishing program, Canadian electronic library. By Carrie Ellen Schweitzer, National Research Council Canada. 2003. / and Branchioplax ballingi.Page 319, Bulletin de la Société géologique de France, Société géologique de France, 1959.
References
External links The Family Goneplacidae MacLeay, 1838 (Crustacea: Decapoda, Brachyura): systematics phylogeny and fossil records. Branchioplax at the Paleobiology Database