Locality 11, Green Canyon, Zone "B": Gasconadian, Utah
collected by R. J. Ross, Jr. 1946-1947

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Trilobita - Asaphida - Asaphidae
Bellefontia chamberlaini Clark 1935
Bellefontia acuminiferentis Ross 1951
Xenostegium franklinense Ross 1951
see common names

Geography
Country:United States State/province:Utah County:Cache
Coordinates: 41.8° North, 111.8° West (view map)
Paleocoordinates:7.3° South, 82.1° West
Basis of coordinate:estimated from map
Geographic resolution:outcrop
Time
Period:Ordovician Epoch:Early/Lower Ordovician
Stage:Tremadocian 10 m.y. bin:Ordovician 1
Key time interval:Gasconadian Trilobite zone: Bellefontia-Xenostegium
Age range of interval:485.40000 - 477.70000 m.y. ago
Stratigraphy
Formation:Garden City
Stratigraphic resolution:group of beds
Stratigraphy comments: Fossils from base of 306 foot interval 126 feet above base of formation.
Lithology and environment
Primary lithology: lithified "limestone"
Secondary lithology:intraclastic lithified grainstone
Includes fossils?Y
Lithology description: "Interbeds of crystalline limestone, muddy, weak laminated limestone, and intraformational conglomerate in crystalline matrix; beds 1-2 feet thick."
Environment:shallow subtidal indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Collection methods:field collection
Reason for describing collection:biostratigraphic analysis
Museum repositories:YPM
Collectors:R. J. Ross, Jr. Collection dates:1946-1947
Metadata
Database number:103913
Authorizer:M. Hopkins Enterer:M. Hopkins
Modifier:P. Wagner Research group:marine invertebrate
Created:2011-02-03 07:36:48 Last modified:2012-08-25 21:21:49
Access level:the public Released:2011-02-03 07:36:48
Creative Commons license:CC BY
Reference information

Primary reference:

25414. R. J., J.r. Ross. 1951. Stratigraphy of the Garden City Formation in northeastern Utah, and its trilobite faunas. Yale Peabody Museum of Natural History Bulletin 6:1-161 [S. Finnegan/S. Finnegan/P. Wagner]