Kamerunoceras

Kamerunoceras is an extinct cephalopod genus belonging to the ammonite family Acanthoceratidae, found in Upper Cretaceous formations (Cenomanian to Turonian age) of Africa, Europe and North and South America.
Description.
"Kamerunoceras", named by R.A. Reyment in 1954, was tentatively included in the acanthoceratid subfamily Mammitinae in W.J. Arkell, "et al" (1957), but has since been combined with "Euomphaloceras", previously of the Acanthoceratinae "ibid", in the Euomphaloceratinae. "Kamerunoceras" is described as being very evolute with a rectangular whorl section and umbilical tubercles only in the middle growth section. Ventrolateral tubercles, found mostly throughout, are spinose. Ribs are irregular, straight at first, becoming denser and sigmoid on the outer whorl.
Species.
The following species of "Kamerunoceras" have been described:
Distribution.
Fossils of "Kamerunoceras" have been found in Austria, Brazil, Cameroon, Colombia (La Frontera and San Rafael Formations), Egypt, France, Mexico, Nigeria, Romania, Tunisia, United States (Arizona, New Mexico, Texas, Utah), Venezuela.