Ichthyoceras
Encyclopedia
Ichthyoceros spinosus is an extinct pycnodontid that lived during the lower Cenomanian
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 back of its head.
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 stratigraphic column deposited during the corresponding...
of what is now Lebanon
Lebanon
Lebanon , officially the Republic of LebanonRepublic of Lebanon is the most common term used by Lebanese government agencies. The term Lebanese Republic, a literal translation of the official Arabic and French names that is not used in today's world. Arabic is the most common language spoken among...
. I. spinosus had a triple, forward-pointing horn-like spine between its eyes, very similar to the single spine of Trewavasia
Trewavasia
Trewavasia carinata is an extinct pycnodontid that lived during the lower Cenomanian of what is now Lebanon. It had a large, forward-pointing horn-like spine between its eyes, and a massive stump-like spine emanating from the . T...
, and a massive, multipointed spine emanating from back of its head.
See also
- Prehistoric fishPrehistoric fishPrehistoric fish refers to early fish that are known only from fossil records. They are the earliest known vertebrates, and include the first and extinct fish that lived through the Cambrian to the Tertiary. The study of prehistoric fish is called paleoichthyology...
- List of prehistoric bony fish
- TrewavasiaTrewavasiaTrewavasia carinata is an extinct pycnodontid that lived during the lower Cenomanian of what is now Lebanon. It had a large, forward-pointing horn-like spine between its eyes, and a massive stump-like spine emanating from the . T...
, its close relative