Middle and late Hettangian (Early Jurassic) ammonites from the Queen Charlotte Islands, British Columbia, Canada

Louise M. Longridge, József Pálfy, Paul L. Smith, Howard W. Tipper

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7 Citations (Scopus)

Abstract

The Queen Charlotte Islands (QCI) yield the most diverse middle and late Hettangian ammonite assemblage in British Columbia. In total, 53 ammonite taxa are described of which Paradasyceras carteri, Franziceras kennecottense, Pleuroacanthites charlottensis, Ectocentrites pacificus and Curviceras haidae are new. All the middle and upper Hettangian is present but current collections do not permit the division of the Mulleri and Occidentalis zones or the Mineralense and Rursicostatum zones. New occurrences of ammonite taxa are indicated for each zone. The QCI fauna permits correlations with Hettangian and early Sinemurian faunas in other areas of North America, South America, New Zealand, western and eastern Tethys, and northwest Europe. The QCI fauna supports the location of Wrangellia in the northern Hemisphere and the eastern Pacfic during the Hettangian and suggests significant northward displacement for the terrane since that time.

Original languageEnglish
Pages (from-to)191-248
Number of pages58
JournalRevue de Paleobiologie
Volume27
Issue number1
Publication statusPublished - Nov 7 2008

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Keywords

  • Ammonites
  • Canada
  • Eastern Pacific
  • Hettangian
  • Queen Charlotte Islands
  • Zonation

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Palaeontology

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