Eoetmopterus davidi
Feichtinger, Pollerspöck, Harzhauser, Auer, Ćorić, Kranner & Guinot, 2022
Classification: Elasmobranchii Squaliformes Etmopteridae
Reference of the original description
Shifts in composition of northern Tethyan elasmobranch assemblages during the last millennia of the Cretaceous. Cretaceous Research, 142, Article 105414
Shifts in composition of northern Tethyan elasmobranch assemblages during the last millennia of the Cretaceous. Cretaceous Research, 142, Article 105414
Types
Eoetmopterus davidi
Eoetmopterus davidi
Description:
Citation: Eoetmopterus davidi Feichtinger, Pollerspöck, Harzhauser, Auer, Ćorić, Kranner & Guinot, 2022: In: Database of fossil elasmobranch teeth www.shark-references.com, World Wide Web electronic publication, Version 12/2024
Description
Original diagnose after Feichtinger et al. (2022) [31181]: Minute, labio-lingually compressed teeth with a strong dignathic heterodonty not exceeding a mesio-distal width of 1 mm. Pronounced lingual root bulge in upper and lower jaw teeth. Labial crown face of all teeth flat with a broad apron overhanging the root. Upper jaw teeth with one main cusp and one pair of asymmetrical lateral cusplets of different height, elongated lingual bulge below the crown pierced by a central foramen. Root contour squared or distally rounded with a medio-lingual foramen and a nutritive groove. Lower jaw teeth monocuspid with short, stocky main cusp inclined distally. Mesial cutting edge sigmoid, distal cutting edge straight. Mesial root edge straight and displaced below the crown, rounded root contour on the distal edge. One central foramen situated on the bulge, one medio-lingual foramen is developed below and a nutritive groove occurs. Numerous labial foraminal openings follow the basal crown edge.
Original diagnose after Feichtinger et al. (2022) [31181]: Minute, labio-lingually compressed teeth with a strong dignathic heterodonty not exceeding a mesio-distal width of 1 mm. Pronounced lingual root bulge in upper and lower jaw teeth. Labial crown face of all teeth flat with a broad apron overhanging the root. Upper jaw teeth with one main cusp and one pair of asymmetrical lateral cusplets of different height, elongated lingual bulge below the crown pierced by a central foramen. Root contour squared or distally rounded with a medio-lingual foramen and a nutritive groove. Lower jaw teeth monocuspid with short, stocky main cusp inclined distally. Mesial cutting edge sigmoid, distal cutting edge straight. Mesial root edge straight and displaced below the crown, rounded root contour on the distal edge. One central foramen situated on the bulge, one medio-lingual foramen is developed below and a nutritive groove occurs. Numerous labial foraminal openings follow the basal crown edge.
References
Haie und Rochen an der Kreide-Paläogen-Grenze. Fossilien, 3/2024, 48–57
Shifts in composition of northern Tethyan elasmobranch assemblages during the last millennia of the Cretaceous. Cretaceous Research, 142, Article 105414
DOI: 10.1016/j.cretres.2022.105414
Haie und Rochen an der Kreide-Paläogen-Grenze. Fossilien, 3/2024, 48–57
Shifts in composition of northern Tethyan elasmobranch assemblages during the last millennia of the Cretaceous. Cretaceous Research, 142, Article 105414
DOI: 10.1016/j.cretres.2022.105414
