SS-31, Simpson Spring Mountains [Woods Hollow Fm]: Marjumian, Texas

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Trilobita - Ptychopariida - Marjumiidae
Nasocephalus flabellatus
Trilobita - Ptychopariida - Kingstoniidae
Blountia assimilis
Agnostida - Agnostidae
Kormagnostus sp. Resser 1938
see common names

Geography
Country:United States State/province:Texas
Coordinates: 30.0° North, 103.3° West (view map)
Paleocoordinates:12.1° South, 101.2° West
Basis of coordinate:based on political unit
Time
Period:Cambrian Epoch:Miaolingian
10 m.y. bin:Cambrian 4
Key time interval:Marjumian Trilobite zone: Cedaria
Age range of interval:504.50000 - 497.00000 m.y. ago
Stratigraphy
Formation:Woods Hollow Boulders
Stratigraphic resolution:member
Stratigraphy comments: "Cedaria zone."
Lithology and environment
Primary lithology:green "limestone"
Secondary lithology: "shale"
Lithology description: Dark yellowish brown to moderate yellowish brown medium-grain mottled limestone, weathers with orange ferruginous spots and contains lenses of trilobite coquina.
Environment:offshore shelf
Geology comments: "ls. boulders in dark green shale. outer shelf (BA5)"
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Reason for describing collection:taxonomic analysis
Taxonomic list comments:"J.L.Wilson 1954. Late Camb. and early Ord. trilobites from the Marathon Uplift, Texas. J. Paleo 28:249-285."
Metadata
Database number:78733
Authorizer:P. Wagner Enterer:P. Wagner
Modifier:P. Wagner Research group:marine invertebrate
Created:2008-02-15 11:17:03 Last modified:2018-12-13 15:09:41
Access level:the public Released:2008-02-15 11:17:03
Creative Commons license:CC BY
Reference information

Primary reference:
26476. J.L. Wilson. 1954. Late Cambrian and Early Ordovician Trilobites from the Marathon Uplift, Texas. Journal of Paleontology 28(3):249-285 [P. Wagner/P. Wagner]