RT info:eu-repo/semantics/article T1 First record of chambered hexactinellid sponges from the Palaeozoic A1 Nose, M. A1 Vodrážka, R. A1 Fernández, Luis Pedro A1 Méndez Bedia, Isabel A1 Fernández Martínez, Esperanza A1 Soto, Francisco A2 Paleontologia K1 Paleontología K1 Sponges K1 Esponjas K1 Arrecifes K1 Reef K1 Paleozoico K1 Paleozoic AB Most chambered sponges (the polyphyletic group of "Sphinctozoa") are hypercalcified types and most of them probably belong to the Demospongia. "Spinctozoa" occur from the Cambrian to the Recent and are the most abundant sponges in Late Palaeozoic and Triassic reefs and shallow water limestones. Among hexactinellid sponges, chambered forms are very rare including taxa only from the Late Jurassic and the Late Triassic of Europe, Russia, Tadjikistan, Iran or China. There are five genera described Casearia Quenstedt, Caucasocoelia Boiko, Dracolychnos Wu & Xiao, Pseudo-verticillites Boiko and Innaecoelia Boiko, the latter of which is synomised with Casearia by most authors. PB GeoUnion Alfred-Wegener-Stiftung YR 2019 FD 2019-04-16 LK http://hdl.handle.net/10612/10274 UL http://hdl.handle.net/10612/10274 NO Terra Nostra, 2012, n. 3 NO p. 129-130 DS BULERIA. Repositorio Institucional de la Universidad de León RD 28-mar-2024