Pleurorthoceras Flower, 1962

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 : 23

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.14988440

persistent identifier

https://treatment.plazi.org/id/93268783-9660-7030-FDCD-FCDFFCC8FAF5

treatment provided by

Plazi (2025-03-07 10:46:31, last updated 2025-03-07 11:32:00)

scientific name

Pleurorthoceras Flower, 1962
status

 

Genus Pleurorthoceras Flower, 1962

Type species

Orthoceras clarksvillense Foerste, 1924 from Clarksville, Ohio, USA, Waynesville Formation, latest Katian; by original designation.

Diagnosis

Slender, gradually expanding, smooth orthocones; circular in cross section with straight, transverse sutures; chamber distance between one-third to one half of the corresponding conch diameter (RCL = 0.3–0.5); siphuncle subcentral to central; siphuncular segments subtubular, slightly expanded within chambers; septal necks short, suborthochoanitic; endosiphuncular deposits unknown; mural cameral deposits well developed. (Adopted from Flower 1962.)

Flower R. H. 1962. Part 1, Revision of Buttsoceras, Part 2, Notes on the Michelinoceratida. State Bureau of Mines and Mineral Resources, New Mexico Institute of Mining and Technology, Memoir 10: 1-58. https://doi.org/10.58799/M-10

Foerste A. F. 1924. Notes on American Paleozoic cephalopods. Denison University Bulletin, Journal of the Scientific Laboratories 20: 193-268.