Cephalopoda - Ceratitida - Proptychitidae

"Clypites evolvens, Waagen (1895, p. 146, pi. xxii, figs. 2a-c), was referred by Frech (1905, pi. xxiii, figs. Sa-d') to "Aspidites" (= Clypeoceras); but although Diener (1915, p. 148) listed Frech’s examples in the synonymy of Waagen’s species, it is probable that at least the largest of the four figured specimens represents a new form intermediate between Clypeoceras and Clypites. It is certainly not identical with Clypeoceras evolvens (Waagen, 1895, p. 223, pi. xxv, fig. 1), listed by Diener (1915a, p. 197) as Meekoceras (Koninckites), and it may therefore be renamed Clypeoceras excentricum, nom. nov." As currently entered, Clypites evolvens and Aspidites evolvens represent separate species named by Waagen (1895), so it is unclear which species this new name represents, or whether the name is applied to a subset of specimens from one of these species.

Full reference: L. F. Spath. 1934. Catalogue of Fossil Cephalopoda in the British Museum (Natural History), Part IV, The Ammonoidea of the Trias. 1-521

Belongs to Clypeoceras according to L. F. Spath 1934

Sister taxa: Clypeoceras largisellatum, Clypeoceras superbum, Aspidites arenosus, Aspidites magnumbilicatus, Aspidites dentosus, Aspidites meridianus

Ecology: nektonic carnivore

Distribution: there are no occurrences of Clypeoceras excentricum in the database

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Specimen images are retrieved through the ePANDDA API.