Cassisodus cf. margaritae
Ginter & Sun, 2007
Classification: Elasmobranchii Hybodontiformes incert. fam.
Reference of the original description
Chondrichthyan remains from the Lower Carboniferous of Muhua, southern China. Acta Palaeontologica Polonica, 52(4), 705–727
Chondrichthyan remains from the Lower Carboniferous of Muhua, southern China. Acta Palaeontologica Polonica, 52(4), 705–727
Types
Cassisodus cf. margaritae
Cassisodus cf. margaritae
Description:
Citation: Cassisodus cf. margaritae Ginter & Sun, 2007: In: Database of fossil elasmobranch teeth www.shark-references.com, World Wide Web electronic publication, Version 09/2026
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Description
Original diagnosis after Ginter & Sun, 2007 [3144]: As for genus: Teeth with euselachian bases and crowns com− posed of a prominent median cusp and two to four lateral cusps on each side. All the cusps smooth, rounded in cross section, slightly compressed mesio−distally, provided with at least one accessory cusplet on both lingual and labial sides. The lateral rami of the crown gradually narrowing and lowering outwards, and gently curved linguad. The overall appearance of the teeth and especially the labial overhang of the main cusp, with its accessory cusplet, resemble Lissodus Brough, 1935. However, the occurrence of accessory cusplets on both sides of lateral cusps is unique of Cassisodus.
Original diagnosis after Ginter & Sun, 2007 [3144]: As for genus: Teeth with euselachian bases and crowns com− posed of a prominent median cusp and two to four lateral cusps on each side. All the cusps smooth, rounded in cross section, slightly compressed mesio−distally, provided with at least one accessory cusplet on both lingual and labial sides. The lateral rami of the crown gradually narrowing and lowering outwards, and gently curved linguad. The overall appearance of the teeth and especially the labial overhang of the main cusp, with its accessory cusplet, resemble Lissodus Brough, 1935. However, the occurrence of accessory cusplets on both sides of lateral cusps is unique of Cassisodus.
References
Mississippian chondrichthyan fishes from the area of Krzeszowice, southern Poland. Acta Palaeontologica Polonica, 64(3), 549–564
DOI: 10.4202/app.00619.2019
Mississippian chondrichthyan fishes from the area of Krzeszowice, southern Poland. Acta Palaeontologica Polonica, 64(3), 549–564
DOI: 10.4202/app.00619.2019
