Heslerodoides triangularis

Ivanov, 2022


Classification: Elasmobranchii Ctenacanthiformes Heslerodidae

Reference of the original description
Ivanov, A.O. (2022)
New late Carboniferous chondrichthyans from the European Russia. Bulletin of Geosciences, 97(2), 219–234

Types
Heslerodoides triangularis
Holotype: PMSPU: SPU 77-1;


Description:


Citation: Heslerodoides triangularis Ivanov, 2022: In: Database of fossil elasmobranch teeth www.shark-references.com, World Wide Web electronic publication, Version 08/2026

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Description
Original diagnosis after Ivanov, 2022 [30561]: Small teeth with fan-shaped crown from five to nine incurved cusps: three to five main cusps, and two to four intermediate and lateral cusplets; central cusp almost equal in size with lateral or intermediate cusps; intermediate and lateral cusps diverging mesially and distally from the center; straight cristae on both cusp sides not reaching apex; long crista on cusp lateral side instead lateral carina; triangular tooth base with pointed central part; one or two closely placed prominent apical buttons in the central part; small labial depression on the labial side below central cusp; wide projection or one to small two tubercles on the labio-basal rim; orthodentine cusps with very thin pulp canals; main and secondary horizontal canals with lacuna-like cavities; wide longitudinal canal connecting pulp canals.

Remarks
shark-references Species-ID=16243;
type species of Heslerodoides Ivanov, 2022 [30561] by monotypy (Art. 68.3 ICZN);

References
Ivanov, A.O. (2022)
New late Carboniferous chondrichthyans from the European Russia. Bulletin of Geosciences, 97(2), 219–234
DOI: 10.3140/bull.geosci.1845