Grypoceratoidea Hyatt 1900
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
Superfamily Grypoceratoidea Hyatt, 1900
Diagnosis
Superfamily of the suborder Domatoceratina with a discoidal, subinvolute to evolute conch. Whorl profile usually inverted trapezoidal with a distinct ventrolateral shoulder and a distinct umbilical margin. Derived species show a variation of modifications including a concave venter, a skid-like ventrolateral shoulder and an angular umbilical margin. Whorl overlap extremely small to moderate. Sculpture in most species lacking, in some species with short lateral ribs or ventrolateral nodes. Septa simply domed; suture line strongly dependent on the whorl profile, usually with broadly rounded lobes and narrowly rounded or subangular saddles (from Korn 2025).
Included families
Grypoceratidae Hyatt, 1900; Domatoceratidae Miller & Youngquist, 1949; new family to be described by Korn & Hairapetian (in press).
Remarks
A discussion of the Grypoceratoidea has been given by Korn (2025).
Notes
Files
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Linked records
Additional details
Identifiers
Biodiversity
- Scientific name authorship
- Hyatt
- Kingdom
- Animalia
- Phylum
- Mollusca
- Order
- Nautilida
- Taxon rank
- superFamily
- Taxonomic concept label
- Grypoceratoidea Hyatt, 1900 sec. Korn & Ghaderi, 2025
References
- Hyatt A. 1900. Cephalopoda. In: Zittel K. A. von & Eastman C. R. (eds) Text-book of Palaeontology, Volume 1, 1 st Edition: 502-604. Macmillan, London, New York.
- 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
- 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