Bed USNM 90b, Conesauga, Woodstock: Marjumian, Alabama

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Lingulata - Acrotretida - Acrotretidae
Opisthotreta sp. Palmer 1954
Agnostida
Glyptagnostus stolidotus Opik 1961
Trilobita - Ptychopariida - Kingstoniidae
Kingstonia appalachia
Trilobita - Llanoaspididae
Deiracephalus unicornis Palmer 1962
Trilobita - Olenida - Cedariidae
Carinamala sp. Palmer 1962
see common names

Geography
Country:United States State/province:Alabama County:Woodstock
Coordinates: 33.0° North, 87.0° West (view map)
Paleocoordinates:25.7° South, 97.0° West
Basis of coordinate:estimated from map
Geographic resolution:small collection
Time
Period: Cambrian Epoch: Miaolingian
10 m.y. bin: Cambrian 4
Key time interval: Marjumian Trilobite zone:  Crepicephalus
Age range of interval: 504.5 - 497 m.y. ago
Stratigraphy
Formation:Conasauga
Stratigraphic resolution:formation
Stratigraphy comments: Listed as Crepicephalus biozone
Lithology and environment
Primary lithology:brown poorly lithified argillaceous "shale"
Secondary lithology:planar lamination,fine lithified "limestone"
Lithology description: Dark brown, weathered shale and siltstone with several thin interbeds of gray, silty, fine-grained, laminated limestone
Environment:carbonate indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils,mesofossils
Collection methods and comments
Reason for describing collection:biostratigraphic analysis
Museum repositories:USNM
Collection method comments: Sample chosen at random; sample is a small one collected by Charles Butts in 1904
Metadata
Database number:75640
Authorizer:P. Novack-Gottshall Enterer:P. Hearn
Modifier:P. Wagner Research group:marine invertebrate
Created:2007-10-23 13:20:59 Last modified:2019-12-12 20:13:27
Access level:the public Released:2007-10-23 13:20:59
Creative Commons license:CC BY
Reference information

Primary reference:
25553. A.R. Palmer. 1962. Glyptagnostus and associated trilobites in the United States. United States Geological Survey Professional Paper 374(F):F1-F49 [P. Novack-Gottshall/P. Hearn/P. Wagner]