Geological Society of America

30 The Contribution of Taphonomy for Understanding the Fossil Record (Posters)

Tuesday, 19 April 2016
8:00 AM - 12:00 PM
Illinois Ballroom AB

THE BIOTA OF THE CAMBRIAN WEEKS FORMATION LAGERSTäTTE, HOUSE RANGE, UTAH

Paper number: 30-4
Program: Theme Sessions
Time: 8:00 AM – 12:00 PM

Authors

Thomas Hegna Presenting Author
Western Illinois University, Macomb, IL
Rudy Lerosey-Aubril
University of New England, Armidale, NSW
Justin Christensen
Western Illinois Univ, Macomb, IL
Nick Liming
Western Illinois University, Macomb, IL
Corrin Peters-Kaffenberger
Western Illinois University, Macomb, IL
Hunter Starr
Western Illinois University, Macomb, IL
Andrew Turner
Western Illinois Univ, Macomb, IL
Robert Gaines
Pomona College, Claremont, CA
Javier Ortega-Hernández
University of Cambridge, Cambridge, N/A
Peter Van Roy
Yale University, New Haven, CT

Abstract

Recent fieldwork has expanded knowledge of the fauna from the Cambrian (Guzhangian Stage) Weeks Formation. The thin-bedded lime mudstones interbedded with shales yield rare soft-bodied fossils in the shaley partings, as well as well-preserved, articulated trilobites. Within the lime mudstones, there is a diverse shelly fauna dominated by trilobites and inarticulate brachiopods. The non-trilobite arthropod fauna is composed about 20 species (almost 40 with agnostids) and includes aglaspidids sensu lato, anomalocaridids, bradoriids, ‘megacheirans’, and several taxa of uncertain affinities. The non-arthropod fauna has become significantly more diverse with the discovery of new lophotrochozoans and several species of sponges.

Geological Society of America Abstracts with Programs. Vol. 48, No. 5

doi: 10.1130/abs/2016NC-275556

© Copyright 2016 The Geological Society of America (GSA), all rights reserved. Permission is hereby granted to the author(s) of this abstract to reproduce and distribute it freely, for noncommercial purposes. Permission is hereby granted to any individual scientist to download a single copy of this electronic file and reproduce up to 20 paper copies for noncommercial purposes advancing science and education, including classroom use, providing all reproductions include the complete content shown here, including the author information. All other forms of reproduction and/or transmittal are prohibited without written permission from GSA Copyright Permissions.