extinct
Extinction is the termination of an organism by the death of its Endling, last member. A taxon may become Functional extinction, functionally extinct before the death of its last member if it loses the capacity to Reproduction, reproduce and ...
order of
crinoid
Crinoids are marine invertebrates that make up the class Crinoidea. Crinoids that remain attached to the sea floor by a stalk in their adult form are commonly called sea lilies, while the unstalked forms, called feather stars or comatulids, are ...
Actinocrinites
''Actinocrinites'' (from , 'ray' and 'to perceive') is an extinct genus of crinoids.
Fossil records
This genus is known in the fossil record from the Devonian period to the Permian
The Permian ( ) is a geologic period and System (stratigra ...
Periechocrinus
''Periechocrinus'' is an extinct genus of crinoids belonging to the order Monobathrida, family Periechecrinidae.W.H.C. RamsbottomPeriechocrinus versus Periechocrinites- Annals and Magazine of Natural History: Series 12 Volume 7, Issue 81, 1954 ...
Paleobiology Database
The Paleobiology Database (PBDB) is an online resource for information on the distribution and classification of fossil animals, plants, and microorganisms.
History
The Paleobiology Database originated in the NCEAS-funded Phanerozoic Marine Pale ...