Published December 20, 2021
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Taxonomic treatment
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Cycloplectoceras Ulrich, Foerste, Miller & Furnish 1942
Creators
- 1. Finnish Museum of Natural History, University of Helsinki, PO Box 44, FI- 00014 Helsinki, Finland.
- 2. Paläontologisches Institut und Museum, University of Zurich, Zurich, Switzerland.
Description
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.
DiagnosisSmall 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).
Notes
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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Linked records
Additional details
Identifiers
Biodiversity
- Family
- Tarphyceratidae
- Genus
- Cycloplectoceras
- Kingdom
- Animalia
- Order
- Tetrabranchia
- Phylum
- Mollusca
- Scientific name authorship
- Ulrich, Foerste, Miller & Furnish
- Taxon rank
- genus
- Taxonomic concept label
- Cycloplectoceras Ulrich, 1942 sec. Kröger & Pohle, 2021
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