Ichthyoceras
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''Ichthyoceros spinosus'' is an extinct pycnodontid that lived during the lower
Cenomanian The Cenomanian is, in the ICS' geological timescale, the oldest or earliest age of the Late Cretaceous Epoch or the lowest stage of the Upper Cretaceous Series. An age is a unit of geochronology; it is a unit of time; the stage is a unit in the s ...
of what is now Lebanon. ''I. spinosus'' had a triple, forward-pointing horn-like spine between its eyes, very similar to the single spine of '' Trewavasia'', and a massive, multipointed spine emanating from the back of its head. It was originally placed in the family
Coccodontidae Coccodontidae is a family of extinct pycnodontid fish that lived during the lower Cenomanian. The various genera had massive, curved spines. The family is composed of five genera, the type genus, ''Coccodus'', '' Paracoccodus'' which was split ...
, but then was transferred to "Trewavasiidae" with ''Trewavasia''. Recently, it has been placed in Gladiopycnodontidae due to recent anatomical similarities with the various genera within that family, including '' Gladiopycnodus''.


See also

* Prehistoric fish *
List of prehistoric bony fish A ''list'' is any set of items in a row. List or lists may also refer to: People * List (surname) Organizations * List College Albert A. List College of Jewish Studies, known simply as List College, is the undergraduate school of the J ...
* '' Trewavasia'', its close relative


References

Pycnodontiformes genera Late Cretaceous fish Extinct animals of Europe {{cretaceous-fish-stub