''Abrotocrinus'' is an

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 ...

genus 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 ...

Fossil record

This genus is known in the fossil record of the

Carboniferous The Carboniferous ( ) is a Geologic time scale, geologic period and System (stratigraphy), system of the Paleozoic era (geology), era that spans 60 million years, from the end of the Devonian Period Ma (million years ago) to the beginning of the ...

period of United States and Canada (age range: 353.8 to 345.0 million years ago).Paleobiology Database
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References

Cladida Prehistoric crinoid genera Paleozoic life of Alberta Paleozoic echinoderms of North America {{Paleo-crinoidea-stub

Fossil record

See also

References