Fossil Jellyfishes from Kansas Pennsylvanian Rocks and Elsewhere

Abstract

A new Pennsylvanian genus of jellyfishes, Crucimedusina, tentatively is referred to the order Hydroida. New genera of Scyphomedusae include Duodecimedusina, established for one new Devonian and two new Pennsylvanian species, and Quadrimedusina, for a Jurassic species. A new class of coelenterates, Dipleurozoa, and new order, Dickinsoniida, are established, to include the new family Dickinsoniidae, based on Dickinsonia Sprigg, a new species of which also is described.