Locality 158/10: Arenig, Australia
collected 1976

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Trilobita - Asaphida - Asaphidae
Norasaphus vesiculosus Fortey and Shergold 1984
subgenus Norasaphites
Fitzroyaspis irritans n. sp. Fortey and Shergold 1984
recombined as Eisarkaspis irritans
see common names

Geography
Country:Australia State/province:Northern Territory
Coordinates: 23.0° South, 137.8° East (view map)
Paleocoordinates:19.9° North, 170.9° East
Basis of coordinate:stated in text
Geographic resolution:small collection
Time
Period:Ordovician
10 m.y. bin:Ordovician 2
Key time interval:Arenig
Age range of interval:477.70000 - 468.40000 m.y. ago
Stratigraphy
Formation:Nora Member:Upper
Local section:158 Local bed:39 m
Local order:bottom to top
Stratigraphic resolution:bed
Lithology and environment
Primary lithology: lithified sandstone
Secondary lithology: lithified siltstone
Includes fossils?Y
Lithology description: Flaggy bedded sandstone and siltstone with occasionally more calcareous interlayers, now decalcified, which contain the richest faunas.
Environment:shallow subtidal indet.
Taphonomy
Modes of preservation:mold/impression
Size of fossils:mesofossils
Collection methods and comments
Collection excludes:some macrofossils
Reason for describing collection:biostratigraphic analysis
Collection dates:1976
Taxonomic list comments:Mollusks, bivalves, gastropods, rostroconchs, and brachiopods also present.
Metadata
Database number:157078
Authorizer:M. Hopkins Enterer:M. Hopkins
Research group:marine invertebrate
Created:2014-06-05 15:34:59 Last modified:2014-06-05 15:34:59
Access level:the public Released:2014-06-05 15:34:59
Creative Commons license:CC BY
Reference information

Primary reference:
51493. R. A. Fortey and J. H. Shergold. 1984. Early Ordovician trilobites, Nora Formation, central Australia. Palaeontology 27:315-366 [M. Hopkins/M. Hopkins/M. Hopkins]