A new camuropiscid arthrodire (Pisces: Placodermi) from Gogo, Western Australia

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18 Citations (Scopus)

Abstract

A new camuropiscid arthrodire, Latocamurus coulthardi gen. et sp. nov., is described from the Upper Devonian Gogo Formation, Western Australia. Latocamurus, known from two complete specimens, is recognized as a camuropiscid by its narrow, spindle‐shaped armour, deep postnasal plates participating in the orbits, preorbital plates which meet mesially, cheek unit firmly sutured to skull roof, posterior check plates tightly interconnected and much reduced, and the robust durophagous dentition. It is characterized by its downturned snout, broad, flat rostral plate, and narrow, deep parasphenoid. It is placed phyletically as the plesiomorphic sister taxon to all other camuropiscids which are more derived in having, inter alia, an anterior lateral plate which anteriorly contacts the anterior ventrolateral plate and pointed rostral plates. The family Camuropiscidae Dennis & Miles 1979b is redefined to incorporate features of the new genus. Camuropiscids and Incisoscutum are closely related by features of the postnasal plate and cheek.

Original languageEnglish
Pages (from-to)233-258
Number of pages26
JournalZoological Journal of the Linnean Society
Volume94
Issue number3
DOIs
Publication statusPublished - Nov 1988
Externally publishedYes

Keywords

  • arthrodire new species
  • Australia
  • camuropiscid
  • Devonian
  • ethmoid anatomy
  • phylogeny

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