''Aacocrinus'' is a genus of extinct
sea lily
Crinoids are marine animals that make up the class Crinoidea. Crinoids that are attached to the sea bottom by a stalk in their adult form are commonly called sea lilies, while the unstalked forms are called feather stars or comatulids, which are ...
from the
Actinocrinitidae (or
Patelliocrinidae) family. It has been shown that it was an attached stationary organism that blindly fed on
passing organism. It was composed of
Mg calcite and its habitat included the upper-level epifauna.
There are currently 14 species within this genus:
* ''
Aacocrinus acylus
''Aacocrinus'' is a genus of extinct sea lily from the Actinocrinitidae (or Patelliocrinidae) family. It has been shown that it was an attached stationary organism that blindly fed on passing organism. It was composed of Mg calcite and its ...
'' (Webster & Jell 1999)
* ''
Aacocrinus algeriaensis
''Aacocrinus'' is a genus of extinct sea lily from the Actinocrinitidae (or Patelliocrinidae) family. It has been shown that it was an attached stationary organism that blindly fed on passing organism. It was composed of Mg calcite and its ...
'' (Webster, Maples, Sevastopulo, Frest & Waters 2004)
* ''
Aacocrinus boonensis
''Aacocrinus'' is a genus of extinct sea lily from the Actinocrinitidae (or Patelliocrinidae) family. It has been shown that it was an attached stationary organism that blindly fed on passing organism. It was composed of Mg calcite and its ...
''
* ''
Aacocrinus chouteauensis
''Aacocrinus'' is a genus of extinct sea lily
Crinoids are marine animals that make up the class Crinoidea. Crinoids that are attached to the sea bottom by a stalk in their adult form are commonly called sea lilies, while the unstalked forms ...
''
* ''
Aacocrinus enigmaticus'' (Webster & Lane 1987)
* ''
Aacocrinus milleri''
* ''
Aacocrinus nododorsatus
''Aacocrinus'' is a genus of extinct sea lily from the Actinocrinitidae (or Patelliocrinidae) family. It has been shown that it was an attached stationary organism that blindly fed on passing organism. It was composed of Mg calcite and its ...
'' (Bowsher 1955)
* ''
Aacocrinus protuberoarmatus'' (Missouri)
* ''
Aacocrinus sampsoni
''Aacocrinus'' is a genus of extinct sea lily from the Actinocrinitidae (or Patelliocrinidae) family. It has been shown that it was an attached stationary organism that blindly fed on passing organism. It was composed of Mg calcite and its ...
''
* ''
Aacocrinus senectus
''Aacocrinus'' is a genus of extinct sea lily from the Actinocrinitidae (or Patelliocrinidae) family. It has been shown that it was an attached stationary organism that blindly fed on passing organism. It was composed of Mg calcite and its ...
''
* ''
Aacocrinus spinosulus
''Aacocrinus'' is a genus of extinct sea lily from the Actinocrinitidae (or Patelliocrinidae) family. It has been shown that it was an attached stationary organism that blindly fed on passing organism. It was composed of Mg calcite and its ...
''
* ''
Aacocrinus spinulosus
''Aacocrinus'' is a genus of extinct sea lily from the Actinocrinitidae (or Patelliocrinidae) family. It has been shown that it was an attached stationary organism that blindly fed on passing organism. It was composed of Mg calcite and its ...
''
* ''
Aacocrinus tetradactylus
''Aacocrinus'' is a genus of extinct sea lily from the Actinocrinitidae (or Patelliocrinidae) family. It has been shown that it was an attached stationary organism that blindly fed on passing organism. It was composed of Mg calcite and its ...
'' (Missouri)
* ''
Aacocrinus triarmatus
''Aacocrinus'' is a genus of extinct sea lily from the Actinocrinitidae (or Patelliocrinidae) family. It has been shown that it was an attached stationary organism that blindly fed on passing organism. It was composed of Mg calcite and its ...
''
References
Monobathrida
Paleozoic echinoderms
Prehistoric echinoderms of North America
{{paleo-crinoidea-stub