Leptocharias tunisiensis
Adnet et al., 2020
Classification: Elasmobranchii Carcharhiniformes Leptochariidae
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: Leptocharias tunisiensis Adnet et al., 2020: 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 Adnet et al., 2020 [28754]: Fossil species of Leptocharias characterized by a disjunctive monognathic heterodonty with partial overlapping of alternate files as observed in the living representative Leptocharias smithii. Antero-lateral teeth with high cusp curved distally and slightly a folded enameloid, twice as large as anterior teeth. Posteriors are quite symmetrical resembling those of scyliorhinid with plicate enameloid. This fossil species is, however, distinct in having lateral teeth with more stocky design, a well-marked overlapping surface on the labial part of the root, a lesser ornamented enamel of the crown in posterior teeth, and in a hemiaulacorhize vascularization of the root.
Original diagnosis after Adnet et al., 2020 [28754]: Fossil species of Leptocharias characterized by a disjunctive monognathic heterodonty with partial overlapping of alternate files as observed in the living representative Leptocharias smithii. Antero-lateral teeth with high cusp curved distally and slightly a folded enameloid, twice as large as anterior teeth. Posteriors are quite symmetrical resembling those of scyliorhinid with plicate enameloid. This fossil species is, however, distinct in having lateral teeth with more stocky design, a well-marked overlapping surface on the labial part of the root, a lesser ornamented enamel of the crown in posterior teeth, and in a hemiaulacorhize vascularization of the root.
Remarks
shark-references Species-ID=16002;
shark-references Species-ID=16002;
References
Combining palaeontological and neontological data shows a delayed diversification burst of carcharhiniform sharks likely mediated by environmental change. Scientific Reports, 12, Article 21906
DOI: 10.1038/s41598-022-26010-7
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
Combining palaeontological and neontological data shows a delayed diversification burst of carcharhiniform sharks likely mediated by environmental change. Scientific Reports, 12, Article 21906
DOI: 10.1038/s41598-022-26010-7
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
