Ichthyoceros
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''Ichthyoceros spinosus'' is an extinct
pycnodontid Pycnodontidae is an extinct family of ray-finned fishes, ranging from the Triassic period until the Eocene. Genera * '' Acrotemnus'' Agassiz, 1843 * '' Anomoeodus'' Forir, 1887 * ''Athrodon'' Sauvage, 1880 * '' Callodus'' Thurmond, 1974 * '' Coc ...
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 Lebanon ( , ar, لُبْنَان, translit=lubnān, ), officially the Republic of Lebanon () or the Lebanese Republic, is a country in Western Asia. It is located between Syria to the north and east and Israel to the south, while Cyprus li ...
. ''I. spinosus'' had a triple, forward-pointing horn-like spine between its eyes, very similar to the single spine of ''
Trewavasia ''Trewavasia carinata'' is an extinct pycnodontid fish in the family Coccodontidae that lived during the lower Cenomanian of what is now Lebanon Lebanon ( , ar, لُبْنَان, translit=lubnān, ), officially the Republic of Lebanon () o ...
'', and a massive, multipointed spine emanating from the back of its head. It was originally placed in the family Coccodontidae, 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 The evolution of fish began about 530 million years ago during the Cambrian explosion. It was during this time that the early chordates developed the skull and the vertebral column, leading to the first craniates and vertebrates. The first 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 ''Trewavasia carinata'' is an extinct pycnodontid fish in the family Coccodontidae that lived during the lower Cenomanian of what is now Lebanon Lebanon ( , ar, لُبْنَان, translit=lubnān, ), officially the Republic of Lebanon () o ...
'', its close relative


References

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