The Camerata or camerate crinoids are an extinct subclass of Paleozoic stalked crinoids. They were some of the earliest crinoids to originate during the Early Ordovician, reached their maximum diversity during the Mississippian, and became extinct during the Permian–Triassic extinction event.Bibliography and index of Paleozoic crinoids, coronates, and hemistreptocrinoids, 1758–1999. G. D. Webster. Geological Society of America Special Papers, vol. 363, 2003. Camerates are the sister group of Pentacrinoidea, which contains all other crinoids (including living species). The two largest camerate subgroups are the orders Diplobathrida and Monobathrida.
Anatomically, they are distinguished by:Treatise on Invertebrate Paleontology, Volume T. Echinodermata: Crinoidea. Ubaghs et al. Editors: R. C. Moore and C. Teichert. 1978. fused junctions between the plates of the cup brachial plates incorporated into the cup tegmen forming a rigid roof over the mouth no less than ten and sometimes a very large number of free arms, often pinnulate
Subdivisions
Order Cladida? Adelphicrinus Eknomocrinus Cnemecrinus Quechuacrinus Reteocrinus Eucamerata Rosfacrinus Order Diplobathrida Order Monobathrida
References
External links Camerata in the Paleobiology Database