Lawrenceoceras Ulrich, Foerste, Miller & Unklesbay, 1944

Kröger, Björn & Pohle, Alexander, 2021, Early-Middle Ordovician cephalopods from Ny Friesland, Spitsbergen - a pelagic fauna with Laurentian affinities, European Journal of Taxonomy 783 (1), pp. 1-102 : 10

publication ID	https://doi.org/ 10.5852/ejt.2021.783.1601
publication LSID	lsid:zoobank.org:pub:071EAD63-05ED-4D6C-AC45-8719E6D79E0B
DOI	https://doi.org/10.5281/zenodo.5793434
persistent identifier	https://treatment.plazi.org/id/5F4487AC-FFA5-FFA7-FE47-7EFEFE007914
treatment provided by	Felipe
scientific name	Lawrenceoceras Ulrich, Foerste, Miller & Unklesbay, 1944
status

Treatment

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).