Ertychius intermedius
Ginter, Hairapetian & Grigoryan, 2011
Classification: Elasmobranchii Ctenacanthiformes incert. fam.
Reference of the original description
Chondrichthyan microfossils from the Famennian and Tournaisian of Armenia. Acta Geologica Polonica, 61(2), 153–173
Chondrichthyan microfossils from the Famennian and Tournaisian of Armenia. Acta Geologica Polonica, 61(2), 153–173
Description:
Citation: Ertychius intermedius Ginter, Hairapetian & Grigoryan, 2011: In: Database of fossil elasmobranch teeth www.shark-references.com, World Wide Web electronic publication, Version 09/2026
Description
Original diagnosis after Ginter, Hairapetian & Grigoryan, 2011 [13934]: As for genus: Mesio-distally elongated teeth with symmetrical to asymmetrical crowns. The median cusp prominent but relatively short, triangular, slightly labiolingually compressed. up to three pairs of lateral cusps in symmetrical forms, the outermost pair the largest. in asymmetrical forms four cusps on the mesial side and only two on the distal side. The cusps recurved and covered with densely packed but distinct subparallel cristae reaching the tips; lateral carina connecting all the cusps. The base oval, provided with a short lingual extension and a well developed, straight basolabial shelf extending mesio-distally almost to the bases of the most lateral cusps. The presence of the orolingual ridge uncertain.
Original diagnosis after Ginter, Hairapetian & Grigoryan, 2011 [13934]: As for genus: Mesio-distally elongated teeth with symmetrical to asymmetrical crowns. The median cusp prominent but relatively short, triangular, slightly labiolingually compressed. up to three pairs of lateral cusps in symmetrical forms, the outermost pair the largest. in asymmetrical forms four cusps on the mesial side and only two on the distal side. The cusps recurved and covered with densely packed but distinct subparallel cristae reaching the tips; lateral carina connecting all the cusps. The base oval, provided with a short lingual extension and a well developed, straight basolabial shelf extending mesio-distally almost to the bases of the most lateral cusps. The presence of the orolingual ridge uncertain.
References
Chondrichthyan microfossils from the Famennian and Tournaisian of Armenia. Acta Geologica Polonica, 61(2), 153–173
Chondrichthyan microfossils from the Famennian and Tournaisian of Armenia. Acta Geologica Polonica, 61(2), 153–173
