Southern bank of Myponga River, ~350 m southeast of Myponga Beach: Early Cambrian, Australia

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Helcionelloida - Helcionellida
see common names

Geography
Country:Australia State/province:South Australia
Coordinates: 35.4° South, 138.4° East (view map)
Paleocoordinates:0.6° North, 107.7° East (Wright 2013)
Basis of coordinate:stated in text
Geographic resolution:hand sample
Time
Period: Cambrian
10 m.y. bin: Cambrian 1-3
Key time interval: Early Cambrian
Age range of interval: 538.8 - 506.5 m.y. ago
Stratigraphy
Geological group:Normanville Formation:Heatherdale Shale
Stratigraphy comments: Lower Cambrian (Series 2, Stage 3)
Lithology and environment
Primary lithology: lithified silty "shale"
Environment:basinal (siliceous)
Geology comments: The Heatherdale Shale was deposited below storm wave-base in a deep marine to basinal setting, as part of a transgressive succession following the shallow water carbonate platform sediments of the Fork Tree Limestone.
A low energy, basinal and dysaerobic to anaerobic environment.
Taphonomy
Modes of preservation:cast,mold/impression,original aragonite,original calcite,replaced with hematite
Size of fossils:macrofossils,mesofossils
Collection methods and comments
Collection excludes:some macrofossils
Collection methods:surface (in situ)
Reason for describing collection:taxonomic analysis
Metadata
Also known as:Locality 4
Database number:190399
Authorizer:S. Jacquet Enterer:S. Jacquet
Created:2017-12-07 13:17:19 Last modified:2025-02-22 15:12:02
Access level:the public Released:2017-12-07 13:17:19
Creative Commons license:CC0
Reference information

Primary reference:
64041. S. M. Jacquet, J. B. Jago, and G. A. Brock. 2016. An enigmatic univalve macromollusc from the lower Cambrian (Series 2, Stage 3) Heatherdale Shale, South Australia. Australasian Palaeontological Memoirs 49:21-30 [S. Jacquet/S. Jacquet]