Palaeodawsonocerina Kröger & Isakar, 2006

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 : 31

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.14988466
persistent identifier	https://treatment.plazi.org/id/93268783-9668-7038-FE14-FB5DFED3F96A
treatment provided by	Plazi
scientific name	Palaeodawsonocerina Kröger & Isakar, 2006
status

Treatment

Genus Palaeodawsonocerina Kröger & Isakar, 2006

Type species

Spyroceras senckenbergi Teichert, 1930 , Saaremõisa (Lyckholm), N of Haapsalu, Kõrgessaare Formation, Vormsi Regional Stage; by original designation.

Diagnosis

Straight or slightly cyrtoconic, circular or subcircular shell, with prominent, narrowly spaced annulations, growth lines, and numerous subordinate filiform longitudinally raised lines, producing a fine reticulate pattern; siphuncle central or slightly eccentric, slightly expanded, with achoanitic to very short orthochoanitic septal necks; apex blunt, slightly cyrtoconic, annulated. (Adopted from Kröger & Isakar 2006.)

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	Orthocerida
Family	Dawsonoceratidae

Specimens

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