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...
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| Format: | Other/Unknown Material |
| Language: | unknown |
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Zenodo
2021
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| Online Access: | https://doi.org/10.5281/zenodo.5793574 http://treatment.plazi.org/id/5F4487ACFF97FF95FE49794BFC317D82 |
| 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 |
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