Heslerodoides triangularis
Ivanov, 2022
Classification: Elasmobranchii Ctenacanthiformes Heslerodidae
Reference of the original description
New late Carboniferous chondrichthyans from the European Russia. Bulletin of Geosciences, 97(2), 219–234
New late Carboniferous chondrichthyans from the European Russia. Bulletin of Geosciences, 97(2), 219–234
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.
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);
shark-references Species-ID=16243;
type species of Heslerodoides Ivanov, 2022 [30561] by monotypy (Art. 68.3 ICZN);
References
New late Carboniferous chondrichthyans from the European Russia. Bulletin of Geosciences, 97(2), 219–234
DOI: 10.3140/bull.geosci.1845

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







