Middle Cambrian (Series 3) arthropods (Trilobita, Agnostida) from CRA Exploration Scarr 1 drillhole, central Georgina Basin, Northern Territory

John R. Laurie*

*Corresponding author for this work

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Samples obtained from the CRA Exploration Scarr 1 drillhole contain several species of agnostoid arthropods and trilobites. These include ?Criotypus sp., 'Acadagnostus' australis (Robison), Euagnostus sp., ?Onymagnostus sp., Opsidiscus sp., Lyriaspis sp. and an indeterminate polymerid, indicating a probable age of late Floran Euagnostus opimus Zone (Cambrian Series 3, Drumian) for the sampled interval of the Arthur Creek Formation. This indicates that the top of the lower unit of the Arthur Creek Formation in this area, as well as the top of the 'hot shale' (the thin basal unit of the lower Arthur Creek Formation) are both E. opimus Zone in age.

Original languageEnglish
Pages (from-to)297-303
Number of pages7
JournalMemoirs of the Association of Australasian Palaeontologists
Volume45
Publication statusPublished - 2014

Keywords

  • Agnostida
  • Arthur Creek Formation
  • Georgina Basin
  • Middle Cambrian
  • Northern Territory
  • Trilobita

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