Biology:Crassotornoceras

Short description: Extinct genus of molluscs

Crassotornoceras Temporal range: Upper Devonian PreЄ Є O S D C P T J K Pg N
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Cephalopoda
Subclass:	†Ammonoidea
Order:	†Goniatitida
Family:	†Tornoceratidae
Subfamily:	†Tornoceratinae
Genus:	†Crassotornoceras House & Price 1985
Type species
Tornoceras ausavense crassum Matern, 1931
Species
C. annissi House & Price, 1985 C. crassum Matern, 1931 C. nitidum Becker, 1993 ?C. isolatum Becker, 1993

Crassotornoceras is genus of ammonoids that lived during Upper Devonian period, from the base of Frasnian age until the base of Maenecoceras subvaricatum zone. Animals belonging to this genus had small subglobular conches with thin umbilicus. These were maybe ornamented by ribs and had biconvex growth lines. Suture had small, tongue-like adventitious lobe. Their fossils were found in United Kingdom, Germany, France, Belgium and Morocco.

References

Wikidata ☰ Q9196595 entry