Lissodus tumidoclavus
Duffin, Heckert & Hancox, 2023
Classification: Elasmobranchii Hybodontiformes fam. indet
Reference of the original description
A new low diversity lacustrine elasmobranch fauna from the Lower Triassic Burgersdorp Formation of South Africa with descriptions of Lissodus tumidoclavus n. sp. (Chondrichthyes: Hybodontoidea). Neues Jahrbuch für Geologie und Paläontologie, Abhandlungen, 308(2), 151–169
A new low diversity lacustrine elasmobranch fauna from the Lower Triassic Burgersdorp Formation of South Africa with descriptions of Lissodus tumidoclavus n. sp. (Chondrichthyes: Hybodontoidea). Neues Jahrbuch für Geologie und Paläontologie, Abhandlungen, 308(2), 151–169
Description:
Citation: Lissodus tumidoclavus Duffin, Heckert & Hancox, 2023: In: Database of fossil elasmobranch teeth www.shark-references.com, World Wide Web electronic publication, Version 08/2026
Description
Original diagnosis after Duffin, Heckert & Hancox, 2023 [31843]: Teeth of Lissodus measuring up to 2.16 mm mesiodistally and 1.4 mm high (Table 1). The central cusp is low, pointed and labially directed. The labial peg is weak to very strong, usually with a vertical ridge on its crest, and may be normal to the central long axis of the crown or twisted away from it. Very strong labial nodes are present on the flanks of the labial peg and/or the junction of the labial peg with the crown in larger lateral teeth. An elongate or localised swelling is present at the same level as the labial peg but on the lingual face of the crown and may be replaced with a complex of lingual nodes and/or a fine horizontal ridge.
Original diagnosis after Duffin, Heckert & Hancox, 2023 [31843]: Teeth of Lissodus measuring up to 2.16 mm mesiodistally and 1.4 mm high (Table 1). The central cusp is low, pointed and labially directed. The labial peg is weak to very strong, usually with a vertical ridge on its crest, and may be normal to the central long axis of the crown or twisted away from it. Very strong labial nodes are present on the flanks of the labial peg and/or the junction of the labial peg with the crown in larger lateral teeth. An elongate or localised swelling is present at the same level as the labial peg but on the lingual face of the crown and may be replaced with a complex of lingual nodes and/or a fine horizontal ridge.
Remarks
shark-references Species-ID=16500;
shark-references Species-ID=16500;
References
A new low diversity lacustrine elasmobranch fauna from the Lower Triassic Burgersdorp Formation of South Africa with descriptions of Lissodus tumidoclavus n. sp. (Chondrichthyes: Hybodontoidea). Neues Jahrbuch für Geologie und Paläontologie, Abhandlungen, 308(2), 151–169
DOI: 10.1127/njgpa/2023/1134
A new low diversity lacustrine elasmobranch fauna from the Lower Triassic Burgersdorp Formation of South Africa with descriptions of Lissodus tumidoclavus n. sp. (Chondrichthyes: Hybodontoidea). Neues Jahrbuch für Geologie und Paläontologie, Abhandlungen, 308(2), 151–169
DOI: 10.1127/njgpa/2023/1134
