Just above Bronco Stromatolith Bed c. 200 m ENE along strike from section 415: Floran, Australia

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Helcionelloida - Helcionellida - Stenothecidae
Mellopegma georginensis Runnegar and Jell 1976
Mellopegma schizocheras n. sp. Vendrasco et al. 2011
Vendrasco et al. 2011
see common names

Geography
Country:Australia State/province:Queensland County:Thornton
Coordinates: 19.5° South, 138.9° East (view map)
Paleocoordinates:26.7° North, 172.6° West
Basis of coordinate:estimated from map
Geographic resolution:small collection
Time
Period: Cambrian Epoch: Miaolingian
Stage: Drumian 10 m.y. bin: Cambrian 4
Key time interval: Floran Trilobite zone:  Ptychagnostus atavus
Age range of interval: 504.5 - 503 m.y. ago
Stratigraphy
Formation:Gowers
Stratigraphic resolution:group of beds
Stratigraphy comments: Just above Bronco Stromatolith Bed
Lithology and environment
Primary lithology:planar lamination,phosphatic lithified lime mudstone
Lithology description: more or less phosphatic, locally silicified, planar laminated calcimudstone with intervals of hardgrounds, nodules and phoscrete crusts and lags. Component phosphate grains include peloids, coated grains intraclasts and bioclasts. From Kruse (2002), not this paper.
Environment:sand shoal
Geology comments: intracratonic basin; environment classification based on lithology. From Kruse (2002), not this paper.
Taphonomy
Modes of preservation:replaced with phosphate
Size of fossils:microfossils
Collection methods and comments
Collection excludes:some macrofossils
Collection methods:bulk,field collection
Reason for describing collection:taxonomic analysis
Collection method comments: All fossils are deposited in the Commonwealth Palaeontological Collections (CPC), Geoscience Australia, Canberra, under accession numbers 39705–39777.
Metadata
Database number:93420
Authorizer:P. Wagner Enterer:P. Wagner
Modifier:P. Wagner Research group:marine invertebrate
Created:2010-01-18 17:41:32 Last modified:2011-07-08 16:39:27
Access level:the public Released:2010-01-18 17:41:32
Creative Commons license:CC BY
Reference information

Primary reference:
31600. M. J. Vendrasco, S. M. Porter, A. Kouchinsky, G. Li, and C. Z. Fernandez. 2010. New data on molluscs and their shell microstructures from the Middle Cambrian Gowers Formation, Australia. Palaeontology 53(1):97-135 [P. Wagner/P. Wagner]

Secondary references:

31613 P. N. Southgate. 1986. The Gowers Formation and Bronco Stromatolith Bed, two new stratigraphic units in the Undilla portion of the Georgina Basin. Queensland Government Mining Journal (10)407-411 [P. Wagner/P. Wagner]
36638 M. J. Vendrasco, A. V. Kouchinsky, S. M. Porter and C. Z. Fernandez. 2011. Phylogeny and escalation in Mellopegma and other Cambrian molluscs. Palaeontologia Electronica 14(2):11A1-44 [P. Wagner/P. Wagner]