A new actinolepid arthrodire (Class Placodermi) from the lower Devonian Sevy Dolomite, East-Centrai Nevada

Heidemarie G. Johnson, David K Elliott, James H. Wittke

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

A new genus and species of actinolepid arthrodire, Aleosteus eganensis, is described from the Lower Devonian (Late Emsian) Sevy Dolomite in the Egan Range of east-central Nevada. A cladistic analysis of the family Actinolepidae is presented for the first time and shows the Baltic Actinolepis species form the primitive sister-group of all other actinolepids. Rapid evolution of the Actinolepidae during the Lochkovian is reflected in the dispersal of the family around the Old Red Sandstone Continent at this time followed by the development of endemic faunas through the Lower Devonian and into the Middle Devonian.

Original languageEnglish (US)
Pages (from-to)241-266
Number of pages26
JournalZoological Journal of the Linnean Society
Volume129
Issue number2
DOIs
StatePublished - Jun 2000

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dolomite
sandstone
new genus
fauna
new species
phylogeny
Lochkovian
Old Red Sandstone
Emsian
cladistics
family

Keywords

  • Actinolepidae
  • Arthrodira
  • Devonian
  • Systematics
  • Taxonomy

ASJC Scopus subject areas

  • Animal Science and Zoology

Cite this

A new actinolepid arthrodire (Class Placodermi) from the lower Devonian Sevy Dolomite, East-Centrai Nevada. / Johnson, Heidemarie G.; Elliott, David K; Wittke, James H.

In: Zoological Journal of the Linnean Society, Vol. 129, No. 2, 06.2000, p. 241-266.

Research output: Contribution to journalArticle

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