Marjun Formation, Section 17, Millard County, Utah - Rigby 1997: Menevian, Utah

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Demospongiae - Protomonaxonida - Hazeliidae
Hazelia palmata Walcott 1920
1 individual
see common names

Geography
Country:United States State/province:Utah County:Millard
Coordinates: 39.1° North, 113.1° West (view map)
Paleocoordinates:4.5° South, 92.0° West
Geographic resolution:outcrop
Time
Period:Cambrian Epoch:Middle Cambrian
10 m.y. bin:Cambrian 3
*Period:Middle Cambrian *Epoch:Middle St. David's
*Local age/stage:Middle Menevian
Key time interval:Menevian Zone: Ptychagnostus punctuosus
Age range of interval:513.00000 - 501.00000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Marjum Limestone
Local section:Section 17, Marjum Formation, Millard County, Utah
Stratigraphic resolution:group of beds
Stratigraphy comments: White Hill Quarry, which is 25 meters east of the sponge locality is at the same stratigraphic level as the Marjum Formation. The stratigraphy of the Marjum Formation is similar to Silurian "smothered-bottom assmeblages" described by Brett (1983).
Lithology and environment
Primary lithology: lithified "shale"
Secondary lithology: "limestone"
Lithology description: the sponge is interbedded BETWEEN shale and limestone, 185-200 meters above the base of the marjum formation.
Environment:submarine fan
Geology comments: The tectonic setting is listed as as "deep basinal".
Taphonomy
Collection methods and comments
Collection excludes:some macrofossils
Collection methods:field collection
Collection size:1 specimens
Reason for describing collection:biostratigraphic analysis
Collection method comments: The sponge specimen is preserved as an oval impression.
Taxonomic list comments:The taxonomic list does not include arthropods, carpoid echinoderms, edrioasteroids, hyolithids, brachiopods, sponges, and algaes found in the stratigraphy but not on the specimen slab.
Metadata
Database number:7909
Authorizer:M. Patzkowsky Enterer:P. Borkow
Research group:marine invertebrate
Created:2000-06-07 15:01:10 Last modified:2001-08-30 17:52:51
Access level:the public Released:2001-03-26 12:03:00
Creative Commons license:CC BY
Reference information

Primary reference:

515. J. K. Rigby, L. F. Gunther, and F. Gunther. 1997. The first occurrence of the Burgess Shale demosponge Hazelia palmata Walcott, 1920, in the Cambrian of Utah. Journal of Paleontology 71(6):994-997 [M. Patzkowsky/P. Borkow/P. Novack-Gottshall]