Ormoceras Stokes, 1840

Kröger, Björn, 2025, The Lyckholm acme of cephalopods - Review of the late Katian (Vormsi-Pirgu regional stages) Ordovician cephalopods of Estonia, European Journal of Taxonomy 978, pp. 1-169 : 19-20

publication ID	https://doi.org/10.5852/ejt.2025.978.2801
publication LSID	lsid:zoobank.org:pub:422E6F06-B4C8-4840-854C-811145D88B32
DOI	https://doi.org/10.5281/zenodo.14988420
persistent identifier	https://treatment.plazi.org/id/93268783-9664-7035-FDAE-FA1BFC0EFE72
treatment provided by	Plazi
scientific name	Ormoceras Stokes, 1840
status

Treatment

Genus Ormoceras Stokes, 1840 View in CoL

Type species

Ormoceras bayfieldi Stokes, 1840 from Niibi, Estonia; Adila Formation, Pirgu Regional Stage, late Katian; subsequent designation by Bassler (1915).

Diagnosis

Medium-sized straight shells, circular or nearly so in cross section; siphuncle subcentral; segments almost globular; septal necks short cyrtochoanitic; endosiphuncular canal system moderately complex to simple, few radial canals. (Adopted from Teichert 1964a.)

References

Copyright notice

No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.

Taxonomy

Kingdom	Animalia
Phylum	Mollusca
Class	Cephalopoda
SubClass	Endoceratoidea
Order	Actinoceratida
Family	Ormoceratidae

Specimens

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