''Reynesocoeloceras'' 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 cuttle ...
that lived during the
lower Pliensbachian stage of
early Jurassic
The Early Jurassic Epoch (in chronostratigraphy corresponding to the Lower Jurassic Series) is the earliest of three epochs of the Jurassic Period. The Early Jurassic starts immediately after the Triassic-Jurassic extinction event, 201.3 Ma ...
, ammonite zones Ibex—Davoei.
Distribution
Fossils of this genus are found in Europe, North America, South America and north Africa.
[Paleobiology Database - Reynesocoeloceras](_blank)
2017-10-16.
Description
Shells of ammonites belonging to this genera had evolute cadicone whorls with depressed section. Venter has been flat. Ribs were usually single. On the ventrolateral tubercules, which could have been small, or even large, there might have been bifurcation of ribs.
References
Ammonitida genera
Dactylioceratidae
Jurassic ammonites
{{Ammonitina-stub