- GeoRef, Copyright 2004, American Geological Institute. Reference includes data from Bibliography and Index of Geology Exclusive of North America, Geological Society of America, Boulder, CO, United States
"Six species of Gomphocythere are known from the Jurassic-Cretaceous passage beds in northwestern Germany and England. They are here reduced to two species, with six subspecies. Problems concerning the taxionomy of brackish-water Ostracoda are also discussed."