Cycloplectoceras Ulrich, Foerste, Miller & Furnish 1942

Genus Cycloplectoceras Ulrich, Foerste, Miller & Furnish, 1942 Type species Cycloplectoceras miseri Ulrich, Foerste, Miller & Furnish, 1942, from the Smithville Formation (Floian Stage), north of Smithville, Lawrence County, Arkansas, USA; by original designation. Diagnosis Small discoidal c...

Full description

Bibliographic Details
Main Authors: Kröger, Björn, Pohle, Alexander
Format: Text
Language:unknown
Published: Zenodo 2021
Subjects:
Biodiversity
Taxonomy
Animalia
Mollusca
Cephalopoda
Tetrabranchia
Tarphyceratidae
Cycloplectoceras
Ny Friesland
Spitsbergen
Online Access:https://dx.doi.org/10.5281/zenodo.5793573
https://zenodo.org/record/5793573
Description
Summary:Genus Cycloplectoceras Ulrich, Foerste, Miller & Furnish, 1942 Type species Cycloplectoceras miseri Ulrich, Foerste, Miller & Furnish, 1942, from the Smithville Formation (Floian Stage), north of Smithville, Lawrence County, Arkansas, USA; by original designation. Diagnosis Small discoidal conch with nearly circular whorls in cross section; whorls are in contact and slightly impressed dorsally; extremely small umbilical perforation; surface ornamented with strong annulations and prominent growth lines, which form v-shaped ventral sinuses; sutures simple and nearly straight; siphuncle near the ventral wall of the conch (from Ulrich et al. 1942). : 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 60, DOI: 10.5852/ejt.2021.783.1601, http://zenodo.org/record/5793422 : {"references": ["Ulrich E. O., Foerste A. F., Miller A. K. & Furnish W. M. 1942. Ozarkian and Canadian cephalopods: Part I: Nautilicones. Geological Society of America Special Papers 37: 1 - 157. https: // doi. org / 10.1130 / SPE 37 - p 1"]}

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