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Extinct subclass of crinoids From Wikipedia, the free encyclopedia
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.[2] 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.[3][4]
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| Camerata Temporal range: | |
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| Rhodocrinus serpens, a sea lily of the family Rhodocrinidae, 16mm measured along the stem fragment and including cup and arms, collected at the Gilmore City Formation, near Gilmore City Iowa, USA, from the Lower Mississippian Carboniferous (Tournaisian) | |
| Scientific classification | |
| Kingdom: | |
| Phylum: | |
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| Class: | |
| Subclass: | †Camerata |
| Subgroups | |
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see text | |
Anatomically, they are distinguished by:[5]
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