Biodiversity Literature Repository
Published December 20, 2021 | Version v1
Taxonomic treatment Open

Proterocameroceras Ruedemann 1905

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 Proterocameroceras Ruedemann, 1905 Type species

Orthoceras brainerdi Whitfield, 1886, from Fort Cassin Formation, Floian, at Fort Cassin headland, Vermont; by original designation.

Diagnosis

Slender, gradually expanding orthocones with broadly elliptically depressed cross section; short chambers; sutures directly transverse, slightly sinuous, forming gentle dorsal and ventral lobes; siphuncle large, almost marginal, circular cross section; connecting ring thick, concave segments; septal necks curved orthochoanitic to loxochoanitic; endosiphuncular deposits form endocones with narrow endosiphotube and three endosiphoblades (after Flower 1941; Ulrich et al. 1944: 55; Teichert 1964: K166).

Remarks

Numerous species have been assigned to Proterocameroceras, especially from the Early and Middle Ordovician of Russia (Balashov 1962, 1968) and South China (Xu & Lai 1987); some of them differ strongly from the type species. Proterocameroceras valhallfonnense sp. nov. (see below) is one of these forms. A revision of this genus is therefore desirable, but not within the scope of this monograph.

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 16, DOI: 10.5852/ejt.2021.783.1601, http://zenodo.org/record/5793422

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Linked records

Additional details

Identifiers

URL
http://treatment.plazi.org/id/5F4487ACFFA3FFA1FDDE7D30FAEF7EC3

Is part of
Journal article: 10.5852/ejt.2021.783.1601 (DOI)
Journal article: http://zenodo.org/record/5793422 (URL)
Journal article: http://publication.plazi.org/id/A37DFFD4FFACFFAEFFD67F14FFDE7A64 (URL)
Journal article: http://zoobank.org/071EAD63-05ED-4D6C-AC45-8719E6D79E0B (URL)
Is source of
https://sibils.text-analytics.ch/search/collections/plazi/5F4487ACFFA3FFA1FDDE7D30FAEF7EC3 (URL)
https://www.gbif.org/species/191693587 (URL)
https://www.checklistbank.org/dataset/2884/taxon/5F4487ACFFA3FFA1FDDE7D30FAEF7EC3.taxon (URL)

Biodiversity

Family
Proterocameroceratidae
Genus
Proterocameroceras
Kingdom
Animalia
Order
Endocerida
Phylum
Mollusca
Scientific name authorship
Ruedemann
Taxon rank
genus
Taxonomic concept label
Proterocameroceras Ruedemann, 1905 sec. Kröger & Pohle, 2021

References

  • Flower R. H. 1941. Development of the mixochoanites. Journal of Paleontology 15: 523 - 548. Flower R. H. 1955. Status of endoceroid classification. Journal of Paleontology 29: 329 - 371. Available from https: // www. jstor. org / stable / 1300321 [accessed 19 Nov. 2021].
  • Ulrich E. O., Foerste A. F., Miller A. K. & Unklesbay A. G. 1944. Ozarkian and Canadian cephalopods. Part III: Longicones and summary. Geological Society of America Special Papers 58: 1 - 226. https: // doi. org / 10.1130 / SPE 58
  • Balashov E. G. 1962. Nautiloidei ordovika sibirskoi platformy. Izdatel'stvo Leningradskogo Universiteta, St. Petersburg.
  • Balashov E. G. 1968. Endoceratoidei ordovika SSSR. Isdatelstvo Leningradskogo Universiteta, Leningrad.
  • Xu G. - H. & Lai C. - G. 1987. Cephalopods. In: Wang X., Ni S., Zeng Q. et al. (eds) Biostratigraphy of the Yangtze Gorge Area, Volume 2, Early Palaezoic Area: 245 - 253. Geological Publishing House, Bejing.