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Published September 24, 2025 | Version v1
Taxonomic treatment Open

Liroceratidae Miller & Youngquist 1949

Authors/Creators

  • 1. Museum für Naturkunde, Leibniz Institut for Research on Evolution and Biodiversity, Invalidenstrasse 43, 10115 Berlin, Germany.
  • 2. Department of Geology, Faculty of Science, Ferdowsi University of Mashhad, Azadi Square, 9177948974 Mashhad, Iran.

Description

Family Liroceratidae Miller & Youngquist, 1949

Diagnosis

Family of the superfamily Liroceratoidea with a usually pachyconic or globular, subinvolute to subevolute conch. Whorl profile in the adult stage usually more or less strongly depressed; flanks and venter form a continuous arch in the early species, the venter can be flattened or concave in advanced species. Umbilical margin rounded; umbilical wall usually convex. Ornament usually consisting of fine growth lines; spiral lines occur in some genera. Septum simple in shape, concavely domed; suture line very simple, almost straight across flanks and venter or with small lobes and saddles (from Korn 2025).

Included genera

Solenoceras Hyatt, 1884 [homonym of Solenoceras Conrad, 1860; objective synonym of Coelogasteroceras]; Coelogasteroceras Hyatt, 1893 (Carboniferous to Permian); Coloceras Hyatt, 1893 [homonym of Coloceras Taschenberg, 1882; synonym of Liroceras Teichert, 1940]; Stearoceras Hyatt, 1893 (Carboniferous to Permian); Peripetoceras Hyatt, 1894 (Carboniferous to Permian); Potoceras Hyatt, 1894 (Carboniferous); Nannoceras Hyatt, 1894 [nomen nullum; synonym of Peripetoceras]; Conradiceras Cossmann, 1900 [objective synonym of Coelogasteroceras]; Liroceras Teichert, 1940 (Carboniferous to Permian); Condraoceras Miller, Lane & Unklesbay, 1947 (Carboniferous to Permian); Periptoceras Chao, 1954 [nomen nullum; synonym of Peripetoceras]; Hemiliroceras Ruzhencev & Shimansky, 1954 (Carboniferous to Permian); Bistrialites Turner, 1954 (Carboniferous); Pseudophacoceras Turner, 1966 (Carboniferous); Neobistrialites Tucker, Mapes & Aronoff, 1978 (Carboniferous); Jianoceras Ma, 1997 (Permian); Nemdoceras Barskov & Shilovsky, 2014 (Permian); Paraliroceras Barskov & Shilovsky, 2014 (Permian); Tatianautilus Barskov & Shilovsky, 2014 (Permian); Leniceras Leonova & Shchedukhin, 2020 (Permian); Shikhanonautilus Leonova & Shchedukhin, 2020 (Permian); Thyoceras Leonova & Shchedukhin, 2020 (Permian); Celeroliroceras gen. nov. (Permian); Perunautilus Crick & Sobolev, 1994 (Triassic); Tomponautilus Sobolev, 1989 (Triassic).

Remarks

A detailed discussion of the Liroceratidae has been given by Korn (2025).

Notes

Published as part of Korn, Dieter & Ghaderi, Abbas, 2025, Late Permian nautiloids from Julfa (NW Iran), pp. 1-113 in European Journal of Taxonomy 1018 on pages 81-82, DOI: 10.5852/ejt.2025.1018.3069, http://zenodo.org/record/17234867

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Linked records

Additional details

Identifiers

URL
http://treatment.plazi.org/id/03D4F01AFF8A9E4D3FC2FA5DFBBBE07B

Is part of
Journal article: 10.5852/ejt.2025.1018.3069 (DOI)
Journal article: http://zenodo.org/record/17234867 (URL)
Journal article: http://publication.plazi.org/id/FFED8862FFDA9E1C3E37FFEEFFA4E36C (URL)
Journal article: http://zoobank.org/74A6C5AD-7328-444C-9478-36F290657B6E (URL)
Is source of
https://biodiversitypmc.sibils.org/collections/plazi/03D4F01AFF8A9E4D3FC2FA5DFBBBE07B (URL)
https://www.gbif.org/species/302372402 (URL)
https://www.checklistbank.org/dataset/312491/taxon/03D4F01AFF8A9E4D3FC2FA5DFBBBE07B.taxon (URL)

Biodiversity

Scientific name authorship
Miller & Youngquist
Kingdom
Animalia
Phylum
Mollusca
Order
Nautilida
Family
Liroceratidae
Taxon rank
family
Taxonomic concept label
Liroceratidae Miller, 1949 sec. Korn & Ghaderi, 2025

References

  • Miller A. K. & Youngquist W. L. 1949. American Permian nautiloids. Geological Society of America Memoires 41: 1-28. https://doi.org/10.1130/MEM41-p1
  • Korn D. 2025. A revised classification of the Carboniferous and Permian Nautilida. European Journal of Taxonomy 1017: 1-85. https://doi.org/10.5852/ejt.2025.1017.3065
  • Hyatt A. 1893. Carboniferous cephalopods. Second paper. Annual Report of the Geological Survey of Texas 4: 327 - 356, 379-474.
  • Taschenberg E. O. W. 1882. Die Mallophagen mit besonderer Berucksichtigung der von Dr. Meyer gesammelten Arten. Nova Acta der kaiserlich Leopoldinisch-Carolinisch-Deutschen Akademie der Naturforscher 44: 1-244. https://doi.org/10.5962/bhl.title.82513
  • Teichert C. 1940. Contributions to nautiloid nomenclature. Journal of Paleontology: 590-597.
  • Hyatt A. 1894. Phylogeny of an acquired characteristic. Proceedings of the American Philosophical Society 32: 349-647. https://doi.org/10.5962/bhl.title.59826
  • Chao K. - K. 1954. Permian cephalopods from Tanchiashan, Hunan. Acta Palaeontologica Sinica 2: 1-58.
  • Ruzhencev V. E. & Shimansky V. N. 1954. Nizhnepermskie svernutye i sognutie nautiloidei yuzhnogo Urala. Trudy paleontologicheskogo Instituta Akademiya Nauk SSSR 50: 1-152. [In Russian.]
  • Turner J. S. 1954. New Carboniferous nautiloids from the North of England. Transactions of Leeds Geologists Association 6: 219-226.
  • Tucker J. K., Mapes R. H. & Aronoff S. M. 1978. New coiled nautiloids from the Wewoka Formation (Pennsylvanian) of Oklahoma. Journal of Paleontology 52: 67-72.
  • Ma J. 1997. Early Late Permian Nautilus in central Jiangxi. Jiangxi Geology 11: 27-32.
  • Barskov I. S., Leonova T. B. & Shilovsky O. P. 2014. Middle Permian cephalopods of the Volga-Ural Region. Paleontological Journal 48: 1331-1414. https://doi.org/10.1134/S0031030114130012
  • Leonova T. B. & Shchedukhin A. Y. 2020. Asselian-Sakmarian nautiloids of the Shakh-Tau Reef (Bashkortostan). Paleontological Journal 54: 1113-1134. https://doi.org/10.1134/S0031030120100044