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Tentaculita is an extinct class of uncertain placement ranging from the Early Ordovician to the Middle Jurassic. They were suspension feeders with a near worldwide distribution. For a more thorough discussion, see ''
Tentaculites ''Tentaculites'' is an extinct genus of conical fossils of uncertain affinity, class Tentaculita, although it is not the only member of the class. It is known from Lower Ordovician to Upper Devonian deposits both as calcitic shells with a brachi ...
''. The presence of perforate septa and "septal necks" has been used to argue for a cephalopod affinity, whereas the shell microstructure, notably the presence of punctae, points to a brachiopod relationship.


Subdivisions

; Subclasses *
Chonioconarida Chonioconarida is an extinct subclass of free living animals from the Tentaculita class, which were common in the Silurian and Devonian oceans. Chonioconarids have a slim and long needle-like larval parts. They are covered with sculpture through ...
;Orders * Cornulitida * Microconchida * Tentaculitida * Trypanoporida ;Genera *''
Anticalyptraea ''Anticalyptraea'' is a fossil genus of encrusting tentaculitoid tubeworms from the Silurian to Devonian of Europe and North America (Vinn, 2010). ''Anticalyptraea'' commonly encrust various invertebrate fossils such as stromatoporoids, rugose ...
''


References

* Farsan, N. M. (1994). Tentaculiten: Ontogenese, Systematik, Phylogenese, Biostratonomie und Morphologie. ''Abhandlungen der Senckenbergischen Naturforschenden Gesellschaft'' 547: 1-128. * *


Further reading


The Paleobiology Database
{{Taxonbar, from=Q1758465 Early Ordovician first appearances Middle Jurassic extinctions