Protochimaera mirabilis
Lebedev & Popov, 2021
Classification: Holocephali Chimaeriformes Protochimaeridae
Reference of the original description
The earliest chimaeriform fish from the Carboniferous of Central Russia. Journal of Systematic Palaeontology, 19(12), 821–846
The earliest chimaeriform fish from the Carboniferous of Central Russia. Journal of Systematic Palaeontology, 19(12), 821–846
Description:
Citation: Protochimaera mirabilis Lebedev & Popov, 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 Lebedev & Popov, 2021 [30123]: A stem chimaeriform fish possessing a dentition characterized by a set of unique characters: (1) beak-shaped cutting mandibular plates composed of a horizontal plate and adjoining labial descending lamina growing along the jaw cartilage; (2) mandibular and vomerine plates showing strongly expressed labial descending laminae, their antimeres contacting tightly at the symphysis; (3) oral surface of the mandibular and vomerine plates concave due to an elevated cutting edge, with a thin varitubate dentine layer instead of tritoral concentrations; (4) mandibular tooth plates composed of three histologically distinct components, each supplied by a separate vascular system.
Original diagnosis after Lebedev & Popov, 2021 [30123]: A stem chimaeriform fish possessing a dentition characterized by a set of unique characters: (1) beak-shaped cutting mandibular plates composed of a horizontal plate and adjoining labial descending lamina growing along the jaw cartilage; (2) mandibular and vomerine plates showing strongly expressed labial descending laminae, their antimeres contacting tightly at the symphysis; (3) oral surface of the mandibular and vomerine plates concave due to an elevated cutting edge, with a thin varitubate dentine layer instead of tritoral concentrations; (4) mandibular tooth plates composed of three histologically distinct components, each supplied by a separate vascular system.
Remarks
shark-references Species-ID=16182;
type species of Protochimaera Lebedev & Popov, 2021 [30123] by monotypy (Art. 68.3 ICZN);
shark-references Species-ID=16182;
type species of Protochimaera Lebedev & Popov, 2021 [30123] by monotypy (Art. 68.3 ICZN);
References
The earliest chimaeriform fish from the Carboniferous of Central Russia. Journal of Systematic Palaeontology, 19(12), 821–846
DOI: 10.1080/14772019.2021.1977732
The earliest chimaeriform fish from the Carboniferous of Central Russia. Journal of Systematic Palaeontology, 19(12), 821–846
DOI: 10.1080/14772019.2021.1977732
