Keichouodus nimaiguensis
Li, Sun, Cuny, Ji, Jiang & Zhou, 2021
Classification: Elasmobranchii Synechodontiformes incert. fam.
Reference of the original description
An unusual shark assemblage from the Ladinian–Carnian interval of South China. Papers in Palaeontology, 2021, 8(1), Article e1404
An unusual shark assemblage from the Ladinian–Carnian interval of South China. Papers in Palaeontology, 2021, 8(1), Article e1404
Types
Keichouodus nimaiguensis
Holotype: GMPKU: P-3521; Paratype: GMPKU: P-3517; GMPKU: P-3522; GMPKU: P-3519; GMPKU: P-3520; GMPKU: P-3517–26;
Keichouodus nimaiguensis
Holotype: GMPKU: P-3521; Paratype: GMPKU: P-3517; GMPKU: P-3522; GMPKU: P-3519; GMPKU: P-3520; GMPKU: P-3517–26;
Description:
Citation: Keichouodus nimaiguensis Li, Sun, Cuny, Ji, Jiang & Zhou, 2021: 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 Li, Sun, Cuny, Ji, Jiang & Zhou, 2021 [30105]: Gradient monognathic heterodont dentition with teeth showing a symmetric crown anteriorly and an asymmetric one posteriorly. Minute teeth displaying 1 to 3 pairs of lateral cusplets that do not exceed half the height of the main cusp; well-developed horizontal, zigzag-shaped rim on the labial side of the crown shoulder; well-developed cutting edges that are not interrupted between cusp and cusplets; incised crown–root junction; presence of foramina at the labiodistal or labiomesial extremity of the root; presence of an SCE and PBE in the enameloid.
Original diagnosis after Li, Sun, Cuny, Ji, Jiang & Zhou, 2021 [30105]: Gradient monognathic heterodont dentition with teeth showing a symmetric crown anteriorly and an asymmetric one posteriorly. Minute teeth displaying 1 to 3 pairs of lateral cusplets that do not exceed half the height of the main cusp; well-developed horizontal, zigzag-shaped rim on the labial side of the crown shoulder; well-developed cutting edges that are not interrupted between cusp and cusplets; incised crown–root junction; presence of foramina at the labiodistal or labiomesial extremity of the root; presence of an SCE and PBE in the enameloid.
Remarks
shark-references Species-ID=16164;
type species of Keichouodus Li, Sun, Cuny, Ji, Jiang & Zhou, 2021 [30105] by monotypy (Art. 68.3 ICZN);
shark-references Species-ID=16164;
type species of Keichouodus Li, Sun, Cuny, Ji, Jiang & Zhou, 2021 [30105] by monotypy (Art. 68.3 ICZN);
References
An unusual shark assemblage from the Ladinian–Carnian interval of South China. Papers in Palaeontology, 2021, 8(1), Article e1404
DOI: 10.1002/spp2.1404
An unusual shark assemblage from the Ladinian–Carnian interval of South China. Papers in Palaeontology, 2021, 8(1), Article e1404
DOI: 10.1002/spp2.1404
