Strophodus atlasensis
Stumpf, Kettler, Kindlimann, Cuny & Kriwet, 2023
Classification: Elasmobranchii Hybodontiformes Acrodontidae
Reference of the original description
The oldest Gondwanan record of the extinct durophagous hybodontiform chondrichthyan, Strophodus from the Bajocian of Morocco. Swiss Journal of Palaeontology, 142, Article 5
The oldest Gondwanan record of the extinct durophagous hybodontiform chondrichthyan, Strophodus from the Bajocian of Morocco. Swiss Journal of Palaeontology, 142, Article 5
Description:
Citation: Strophodus atlasensis Stumpf, Kettler, Kindlimann, Cuny & Kriwet, 2023: In: Database of fossil elasmobranch teeth www.shark-references.com, World Wide Web electronic publication, Version 08/2026
Description
Original diagnosis after Stumpf, Kettler, Kindlimann, Cuny & Kriwet, 2023 [31825]: A species of Strophodus that is characterized by the following unique combination of dental characters: Presence of a well-developed, heterodont crushing-type dentition; teeth of first lateral file short mesio-distally and slightly domed in labio-lingual view, with a nearly triangular occlusal outline; tooth crowns of first lateral teeth without transverse occlusal crest, but covered with a finely reticulate pattern; teeth of the second lateral file wide mesio-distally and bulbous without a dome in labio-lingual view, displaying a subrectangular occlusal outline with a slightly concave labial and a gently convex lingual edge; tooth crowns of second lateral teeth without transverse occlusal crest and covered with a finely reticulate pattern that turns into labiolingually aligned bands along the lingual part of the crown; teeth of first posterior file shorter mesio-distally than labio-lingually long and elliptical in occlusal outline; tooth crowns of first posterior teeth slightly elevated and ornamented with a finely reticulate pattern; tooth crowns of second posterior teeth small and oval in occlusal outline with their long axes oriented obliquely, exhibiting a finely reticulate ornamentation pattern; tooth roots of second posterior teeth parallelogram- shaped in occlusal outline and protrude distally and slightly labio-lingually below the crown, meeting each other in an efficient interlocking manner.
Original diagnosis after Stumpf, Kettler, Kindlimann, Cuny & Kriwet, 2023 [31825]: A species of Strophodus that is characterized by the following unique combination of dental characters: Presence of a well-developed, heterodont crushing-type dentition; teeth of first lateral file short mesio-distally and slightly domed in labio-lingual view, with a nearly triangular occlusal outline; tooth crowns of first lateral teeth without transverse occlusal crest, but covered with a finely reticulate pattern; teeth of the second lateral file wide mesio-distally and bulbous without a dome in labio-lingual view, displaying a subrectangular occlusal outline with a slightly concave labial and a gently convex lingual edge; tooth crowns of second lateral teeth without transverse occlusal crest and covered with a finely reticulate pattern that turns into labiolingually aligned bands along the lingual part of the crown; teeth of first posterior file shorter mesio-distally than labio-lingually long and elliptical in occlusal outline; tooth crowns of first posterior teeth slightly elevated and ornamented with a finely reticulate pattern; tooth crowns of second posterior teeth small and oval in occlusal outline with their long axes oriented obliquely, exhibiting a finely reticulate ornamentation pattern; tooth roots of second posterior teeth parallelogram- shaped in occlusal outline and protrude distally and slightly labio-lingually below the crown, meeting each other in an efficient interlocking manner.
Remarks
shark-references Species-ID=16481;
shark-references Species-ID=16481;
References
The oldest Gondwanan record of durophagous shark Strophodus Agassiz, 1838 (Hybodontiformes) from the Kachchh Basin, western India. Historical Biology, 7(3), 650–662
DOI: 10.1080/08912963.2024.2324430
The oldest Gondwanan record of the extinct durophagous hybodontiform chondrichthyan, Strophodus from the Bajocian of Morocco. Swiss Journal of Palaeontology, 142, Article 5
DOI: 10.1186/s13358-023-00270-w

The oldest Gondwanan record of durophagous shark Strophodus Agassiz, 1838 (Hybodontiformes) from the Kachchh Basin, western India. Historical Biology, 7(3), 650–662
DOI: 10.1080/08912963.2024.2324430
The oldest Gondwanan record of the extinct durophagous hybodontiform chondrichthyan, Strophodus from the Bajocian of Morocco. Swiss Journal of Palaeontology, 142, Article 5
DOI: 10.1186/s13358-023-00270-w








