Lawrenceoceras Ulrich, Foerste, Miller & Unklesbay 1944

Genus Lawrenceoceras Ulrich, Foerste, Miller & Unklesbay, 1944 Type species Lawrenceoceras collinsi Ulrich, Foerste, Miller & Unklesbay, 1944 from boulders at Point Levis, Levis County, Quebec, Canada (presumably late Floian); by original designation. Diagnosis Smooth, slender, cyrtocones wi...

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Bibliographic Details
Main Authors: Kröger, Björn, Pohle, Alexander
Format: Other/Unknown Material
Language:unknown
Published: 2021
Subjects:
Biodiversity
Taxonomy
Animalia
Mollusca
Cephalopoda
Ellesmerocerida
Bassleroceratidae
Lawrenceoceras
Canada
Ny Friesland
Spitsbergen
Online Access:https://zenodo.org/record/5793434
https://doi.org/10.5281/zenodo.5793434
Description
Summary:Genus Lawrenceoceras Ulrich, Foerste, Miller & Unklesbay, 1944 Type species Lawrenceoceras collinsi Ulrich, Foerste, Miller & Unklesbay, 1944 from boulders at Point Levis, Levis County, Quebec, Canada (presumably late Floian); by original designation. Diagnosis Smooth, slender, cyrtocones with elliptically depressed cross section. Sutures directly transverse, with very shallow, broad dorsal and ventral lobes. Siphuncle small, about 0.1 of conch diameter, on convex side of conch, almost marginal in position. Siphuncular segments cylindrical or nearly so (compiled from Ulrich et al. 1944). 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 10, DOI:10.5852/ejt.2021.783.1601, http://zenodo.org/record/5793422

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