Olenidslettoceras Kröger & Pohle 2021, gen. nov.

Genus Olenidslettoceras gen. nov. urn:lsid:zoobank.org:act: D66D41DD-0A41-4110-BFF7-1E014ED180FA Type species Olenidslettoceras farmi gen. et sp. nov., from 120.3 m (PO 123.3) above base of Olenidsletta Member, V2a trilobite zone, Blackhillsian, Floian by original designation. Diagnosis Slender, dep...

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Bibliographic Details
Main Authors: Kröger, Björn, Pohle, Alexander
Format: Text
Language:unknown
Published: Zenodo 2021
Subjects:
Biodiversity
Taxonomy
Animalia
Mollusca
Cephalopoda
Tetrabranchia
Rioceratidae
Olenidslettoceras
Ny Friesland
Spitsbergen
Online Access:https://dx.doi.org/10.5281/zenodo.5793607
https://zenodo.org/record/5793607
Description
Summary:Genus Olenidslettoceras gen. nov. urn:lsid:zoobank.org:act: D66D41DD-0A41-4110-BFF7-1E014ED180FA Type species Olenidslettoceras farmi gen. et sp. nov., from 120.3 m (PO 123.3) above base of Olenidsletta Member, V2a trilobite zone, Blackhillsian, Floian by original designation. Diagnosis Slender, depressed, exogastric cyrtocones. Angle of expansion larger in apical portions. Adoral portions of mature specimens less curved and with low angle of expansion. Chambers narrowly spaced. Thin siphuncle positioned near conch margin at convex side with thick connecting rings which are tubular at the dorsal side and concave at the ventral side. Septal necks are very short, thickened, and orthochoanitic to suborthochoanitic. Comparison See discussion of type species. : Published as part of Kröger, Björn & Pohle, Alexander, 2021, Early-Middle Ordovician cephalopods from Ny Friesland, Spitsbergen - a pelagic fauna with Laurentian affinities, pp. 1-102 in European Journal of Taxonomy 783 (1) on page 74, DOI: 10.5852/ejt.2021.783.1601, http://zenodo.org/record/5793422

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