Second specimen of the lower actinopterygian Novogonatodus kasantsevae long 1988 from the Early Carboniferous of Mansfield, Victoria

Timothy M. Holland, John A. Long, Anne Warren, Jillian M. Garvey

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

A new specimen of the Early Carboniferous actinopterygian Novogonatodus kasantsevae Long 1988 from the Snowy Plains Formation, Mansfield Basin, Victoria is described. Previously undescribed elements of the skull, both dorsal and anterior to the orbit, as well as dorsal ridge scales, are shown for the first time. Novogonatodus kasantsevae shows many plesiomorphic characters, including an elongated T-shaped dermosphenotic, contact between the nasals and dermosphenotics, a small quadratojugal and three extrascapular bones. Apomorphies present include small postparietals and lack of intertemporals and supratemporals. The previous assignment to the Family Gonatodidae Gardiner 1967 is no longer supported as most of the characters defining the family are widespread features developed within several lineages of basal actinopterygians. Hence, Novogonatodus kasantsevae is regarded as a plesiomorphic actinopterygian more derived in the scheme of Cloutier and Arratia (2004a) than the clade containing Melanecta, Limnomis and Howqualepis (and possibly Mansfieldisous) but less derived than the Aesopichthyidae, Rhadinichthyidae and other crownward Actinopterygii.

Original languageEnglish
Pages (from-to)1-10
Number of pages10
JournalProceedings of the Royal Society of Victoria
Volume118
Issue number1
Publication statusPublished - 31 Oct 2006
Externally publishedYes

Keywords

  • Actinopterygii
  • Carboniferous
  • Mansfield
  • Novogonatodus
  • Victoria

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