Mammites

Mammites is a Late Cretaceous (Cenomanian to Turonian) ammonite genus included in the acanthoceratoidean family, Acanthoceratidae, and the type genus for the subfamily Mammitinae. "Mammites" was named by Laube and Bruder in 1887.
Species.
Species within the genus "Mammites" include:
Description.
Shells of "Mammites" are typically stout, usually with a rectangular or squarish whorl section and flattish to slightly concave venter and can reach a diameter of 15–20 millimeters (0.59–0.79 in). Ornamentation is dominated by strong umbilical tubercles and moderate inner and outer ventrolateral tubercles. Ribs are somewhat prominent in juveniles stages but tend to become inconspicuous in the adult. The suture is ammonitic but rather simple. Some species, those with broad first lateral lobes in the suture, have been reassigned to "Morrowites"
"Mammites" and "Morrowites" are rather similar except that "Mammites" as redefined has a narrow first later lobe while that in "Morrowites" is broad and the early whorls in "Morrowites" are smooth except for widely spaced ribs and constrictions while those in "Mammites" have normal ribs and tubercles.
Distribution.
Fossils of species within this genus have been found in the Late Cretaceous formations of Angola, Brazil, Cameroon, Colombia (La Frontera, Boyacá, Cundinamarca and Huila) and San Rafael Formations, Egypt, France, India, Madagascar, Mexico, Nigeria, Peru, Romania, Tunisia, United States and Venezuela.