Parvodus huizodus

Wen & Kriwet, 2022


Classification: Elasmobranchii Hybodontiformes Lonchidiidae

Reference of the original description
Wen, W. & Kriwet, J. & Zhang, Q.Y. & Benton, M.J. & Duffin, C.J. & Huang, J.Y. & Zhou, C.Y. & Hu, S.X. & Ma, Z.X. (2022)
Hybodontiform shark remains (Chondrichthyes, Elasmobranchii) from the Lower Triassic of Yunnan Province, China, with comments on hybodontiform diversity across the PTB. Journal of Vertebrate Paleontology, 42(1), Article e2108712

Types
Parvodus huizodus
Holotype: CDCGS: HZ-10; Paratype: CDCGS: HZ-1-6, HZ-11, HZ-20; CDCGS: HZ-21-23;


Description:


Citation: Parvodus huizodus Wen & Kriwet, 2022: 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 Wen & Kriwet, 2022 [31095]: A species of Parvodus characterized by the combination of the following dental characters (autapomorphic characters are indicated by an asterisk): main cusp moderately blunt, two to three pairs of low, broadly united and not very well-separated lateral cusplets, with vertical, more or less parallel ridges on the main cusp, starting just above the labial protuberance (labial peg) and ascending apically reaching the apex; rare vertical ridges on lateral cusplets usually originating at apices and continuing basally into a small node; short horizontal ridges present between main cusp and first lateral cusplets*; short and very faint vertical ridges and small crenulae occasionally present between main cusp and first cusplets*; labial protuberance small but well developed and rounded, not supported by a root buttress in latero-posterior teeth; labial protuberance very reduced to absent in anterior teeth; root fairly low, with a single row of small, rounded foramina present labially below crown-root junction and an additional row of large, oval foramina present basally on the recessed portion of the root, becoming smaller and circular below mesial and distal cusplets; incised lingual crown-root junction in posterior-lateral teeth.

Remarks
shark-references Species-ID=16369;

References
Böttcher, R. (2024)
Root resorption during tooth replacement in sharks – a unique character of the Hybodontiformes (Chondrichthyes, Elasmobranchii). Palaeodiversity, 17(1), 121–194
DOI: 10.18476/pale.v17.a6
Wen, W. & Kriwet, J. & Zhang, Q.Y. & Benton, M.J. & Duffin, C.J. & Huang, J.Y. & Zhou, C.Y. & Hu, S.X. & Ma, Z.X. (2022)
Hybodontiform shark remains (Chondrichthyes, Elasmobranchii) from the Lower Triassic of Yunnan Province, China, with comments on hybodontiform diversity across the PTB. Journal of Vertebrate Paleontology, 42(1), Article e2108712
DOI: 10.1080/02724634.2022.2108712