Tuyuria insolita
Lebedev, 2026
Classification: Euchondrocephali Eugeneodontiformes Lestrodontidae
Reference of the original description
The earliest stem edestoid (Eugeneodontiformes, Chondrichthyes) from the Viséan (lower Carboniferous) of Tula Region, Central Russia, and a revision of Edestoidea. Canadian Journal of Zoology, 104, 1–24
The earliest stem edestoid (Eugeneodontiformes, Chondrichthyes) from the Viséan (lower Carboniferous) of Tula Region, Central Russia, and a revision of Edestoidea. Canadian Journal of Zoology, 104, 1–24
Images of types
Description:
Citation: Tuyuria insolita Lebedev, 2026: In: Database of fossil elasmobranch teeth www.shark-references.com, World Wide Web electronic publication, Version 04/2026
Please send your images of "Tuyuria insolita" to info@shark-references.com
Tuyuria insolita Lebedev, 2026; holotype PIN 1488/56, Demidovka quarry, Tula Region, Central Russia, lower Carboniferous, middle Viséan © Lebedev
Tuyuria insolita Lebedev, 2026; holotype PIN 1488/56, Demidovka quarry, Tula Region, Central Russia, lower Carboniferous, middle Viséan © Lebedev
Description
Diagnosis after Lebedev, 2026 [35727]: Serrated lingual marginconcave, labial convex, crown slanted lingually. Crown forms no lateral projections, surface smooth. Crown serration at the base of the lingual row terminates in a T-junction with short transverse cusplet row. Crowns of successive elements contact basally by means of the labial buttress and basal point of the lingual serration. Symmetric lifetime wear facet on the labial occlusal crest; additional lateral facets on one crown side. Basal surface of the dental elements’ base almost flat. Base penetrated by numerous transverse vascular canals. Large pulp cavity opens basally from the labial buttress via a short and thick canal. Crown coated with enameloid.
Diagnosis after Lebedev, 2026 [35727]: Serrated lingual marginconcave, labial convex, crown slanted lingually. Crown forms no lateral projections, surface smooth. Crown serration at the base of the lingual row terminates in a T-junction with short transverse cusplet row. Crowns of successive elements contact basally by means of the labial buttress and basal point of the lingual serration. Symmetric lifetime wear facet on the labial occlusal crest; additional lateral facets on one crown side. Basal surface of the dental elements’ base almost flat. Base penetrated by numerous transverse vascular canals. Large pulp cavity opens basally from the labial buttress via a short and thick canal. Crown coated with enameloid.
Remarks
shark-references Species-ID=17806
shark-references Species-ID=17806
References
The earliest stem edestoid (Eugeneodontiformes, Chondrichthyes) from the Viséan (lower Carboniferous) of Tula Region, Central Russia, and a revision of Edestoidea. Canadian Journal of Zoology, 104, 1–24
DOI: 10.1139/cjz-2025-0140
The earliest stem edestoid (Eugeneodontiformes, Chondrichthyes) from the Viséan (lower Carboniferous) of Tula Region, Central Russia, and a revision of Edestoidea. Canadian Journal of Zoology, 104, 1–24
DOI: 10.1139/cjz-2025-0140
