A new decapod trackway from the upper Cretaceous, James Ross Island, Antarctica

D. Pirrie, R. M. Feldmann, L. A. Buatois

Research output: Contribution to journalArticlepeer-review

Abstract

A new trace fossil, Foersterichnus rossensis igen. nov. and isp. nov., is described from the Coniacian Hidden Lake Formation, James Ross Island, Antarctica. The trace fossil is a trackway comprising straight, or slightly curving, paired rows of elongate to tear-shaped impressions, parallel or slightly inclined to the long axis of the trackway. Foersterichnus is interpreted to be the trackway of a brachyuran decapod crustacean. It occurs in transgressive shallow marine deposits formed above the storm wave base in a shelf setting. Preservation of the trackway may have been linked to a rapid deoxygenation event during drowning that led to cessation of bioturbation allowing preservation of mixed layer trackways.

Original languageEnglish
Pages (from-to)1-12
Number of pages12
JournalPalaeontology
Volume47
DOIs
Publication statusPublished - Jan 2004

Keywords

  • trace fossils
  • decapods
  • Cretaceous
  • Antarctica
  • BASIN
  • PSILONICHNUS
  • STRATIGRAPHY
  • ICHNOFABRICS
  • ICHNOLOGY
  • EVOLUTION
  • PENINSULA
  • ALBERTA
  • SERIES
  • BAY

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