Coupatezia cristata
Adnet et al., 2020
Classification: Elasmobranchii Myliobatiformes Dasyatidae
Reference of the original description
Diversity and renewal of tropical elasmobranchs around the Middle Eocene Climatic Optimum (MECO) in North Africa: New data from the lagoonal deposits of Djebel el Kébar, Central Tunisia. Palaeontologica Electronica, 23(2), Article a38
Diversity and renewal of tropical elasmobranchs around the Middle Eocene Climatic Optimum (MECO) in North Africa: New data from the lagoonal deposits of Djebel el Kébar, Central Tunisia. Palaeontologica Electronica, 23(2), Article a38
Description:
Citation: Coupatezia cristata Adnet et al., 2020: In: Database of fossil elasmobranch teeth www.shark-references.com, World Wide Web electronic publication, Version 08/2026
Description
Original diagnosis after Adnet et al., 2020 [28754]: Species of Coupatezia characterized by large teeth (up to 5 mm mesiodistally wide) and only known by “female” tooth morphology, suggesting the lack of any gynandric heterodonty in this species. This species is also characterized by a combinations of many characters separately observed in “female” teeth of other species, as: teeth always broader than long (e.g., like C. bojoi, C. larivei, C. reniformis, C. wouterzi), crown having a deeply concave occlusal part of the labial face (e.g., like C. fallax, C. ambroggii), and sometimes of the lingual face; both surfaces of crown are finely ornamented with alveolar web of enameloid (e.g., like C. larivei); a labial visor strongly irregular in occlusal or labial view (e.g., like C. fallax).
Original diagnosis after Adnet et al., 2020 [28754]: Species of Coupatezia characterized by large teeth (up to 5 mm mesiodistally wide) and only known by “female” tooth morphology, suggesting the lack of any gynandric heterodonty in this species. This species is also characterized by a combinations of many characters separately observed in “female” teeth of other species, as: teeth always broader than long (e.g., like C. bojoi, C. larivei, C. reniformis, C. wouterzi), crown having a deeply concave occlusal part of the labial face (e.g., like C. fallax, C. ambroggii), and sometimes of the lingual face; both surfaces of crown are finely ornamented with alveolar web of enameloid (e.g., like C. larivei); a labial visor strongly irregular in occlusal or labial view (e.g., like C. fallax).
Remarks
shark-references Species-ID=16007;
shark-references Species-ID=16007;
References
Diversity and renewal of tropical elasmobranchs around the Middle Eocene Climatic Optimum (MECO) in North Africa: New data from the lagoonal deposits of Djebel el Kébar, Central Tunisia. Palaeontologica Electronica, 23(2), Article a38
DOI: 10.26879/1085
Diversity and renewal of tropical elasmobranchs around the Middle Eocene Climatic Optimum (MECO) in North Africa: New data from the lagoonal deposits of Djebel el Kébar, Central Tunisia. Palaeontologica Electronica, 23(2), Article a38
DOI: 10.26879/1085
