Cystothalamia is an extinct genus of sea sponges in the family Guadalupiidae that existed during the Permian and Triassic in what is now Austria, Hungary, Slovenia, Tajikistan, Croatia, Iran, Italy, Russia, Thailand, Tunisia, the United States (New Mexico and Texas), and Venezuela. It was described by G.H. Girty in 1909, and the type species is Cystothalamia nodulifera.
Species Cystothalamia conica Cystothalamia crassa Cystothalamia megacystaThe Sponge Family Guadalupiidae in the Texas Permian Robert M. Finks. Cystothalamia nana Cystothalamia nodulifera Cystothalamia ramosa Cystothalamia vandegraafi. Cystothalamia surmaqensis
References
External links Cystothalamia at the Paleobiology Database.