''Nodicoeloceras'' is genus of

ammonite Ammonoids are a group of extinct marine mollusc animals in the subclass Ammonoidea of the class Cephalopoda. These molluscs, commonly referred to as ammonites, are more closely related to living coleoids (i.e., octopuses, squid and cuttlefish) ...

that lived during early to middle Toarcian stage of early Jurassic. Members of this genus existed from Exaratum Subzone of Falciferum Zone to Commune subzone of Bifrons Zone. Their fossils were found in Europe, northern Africa, Asia, North America and South America. It has probably evolved from '' Dactylioceras (Orthodactylites)'' or '' Kedonoceras'' and gave rise to '' Mesodactylites''.

Description

Ammonites belonging to this genus have moderately evolute to cadicone shells. Whorl section is characterized by depressed whorls with convex flanks and low venter. Ribs are bifurcating at the position of ventrolateral shoulder, where tubercules, or spines are mostly present.Kovács, Z. (2014). Toarcian Dactylioceratidae (Ammonitina) from the Gerecse Mts (Hungary). Hantkeniana, 9, 45-77.

Synonyms

While '' Mesodactylites'' and '' Fibulocoeloceras'' are sometimes considered to be just synonyms of ''Nodicoeloceras'', other times they are considered to be a valid genera.

References

Dactylioceratidae Toarcian life Early Jurassic ammonites of Europe Ammonites of Africa Ammonites of Asia Ammonites of North America Ammonites of South America Ammonitida genera {{Ammonitina-stub