Labial cartilages in the smalltooth sandtiger shark, Odontaspis ferox (Lamniformes: Odontaspididae) and their significance to the phylogeny of lamniform sharks

Kenshu Shimada*, Cynthia K. Rigsby, Sun H. Kim

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

Using computed tomography, we discovered labial cartilages (splanchnocranial components) in an enigmatic lamniform shark, Odontaspis ferox (smalltooth sandtiger). We demonstrate that the presence of labial cartilages is plesiomorphic in Lamniformes, affirming that their "reduction" cannot be used as a synapomorphy for the order. Rather, their loss occurred through lamniform phylogeny.

Original languageEnglish (US)
Pages (from-to)813-817
Number of pages5
JournalAnatomical Record
Volume292
Issue number6
DOIs
StatePublished - 2009

Keywords

  • Elasmobranch
  • Labial cartilage
  • Lamniform
  • Phylogeny
  • Shark

ASJC Scopus subject areas

  • Anatomy
  • Biotechnology
  • Histology
  • Ecology, Evolution, Behavior and Systematics

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