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There then followed a selective mass extinction at the end of the Permian period, during which all blastoids and most crinoids became extinct. [28] After the end-Permian extinction, crinoids never regained the morphological diversity and dominant position they enjoyed in the Paleozoic; they employed a different suite of ecological strategies ...
Pentacrinites is an extinct genus of crinoids that lived from the Hettangian to the Bathonian of Asia, Europe, North America, and New Zealand.Their stems are pentagonal to star-shaped in cross-section and are the most commonly preserved parts. [1]
Actinocrinites (from Greek: ἀκτίς aktís, 'ray' and Greek: κρίνω krino 'to perceive') [2] is an extinct genus of crinoids. Fossil records
Cyathocrinites is an extinct genus of crinoids that lived from the Early Silurian to the Late Permian in Europe and North America. Sources
The earliest crinoid may have been Echmatocrinus, the fossilised remains of which have been found in the Burgess Shale, but some authorities do not accept it as a crinoid. Bourgueticrinids first appeared in the fossil record during the Triassic period, although other crinoid groups, now extinct, originated in the Ordovician .
Eucalyptocrinites is an extinct genus of crinoid that lived from the Silurian to the Middle Devonian. Its remains have been found in Asia, Australia, Europe, ...
Scyphocrinus, is an extinct genus of crinoids.Species belonging to this genus lived during the Silurian and Devonian periods (from 443.4 to 358.9 Ma). [1] [2]The crinoid genus Camarocrinus have been considered by some authors the bulbous distal end of the stem of Scyphocrinus, having the function of a root and fixing the crinoid to the sea button.
Dimerocrinites is an extinct genus of crinoids that lived from the Silurian to the Early Devonian of Australia and North America. Sources. Fossils ...