Atrypina Community, Laketown Dolomite, Eastern Great Basin: Llandovery - Wenlock, Nevada

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
Axofistulophyllum aff. conulus
? Axofistulophyllum ? conulus
? Axofistulophyllum sp.
Axofistulophyllum convexum
Diaphragmaphyllum aff. grossum
Pachyconulus parvalus
Eoplectodona sp.
Sheehan 1980
sp. A
Stricklandidae indet.
Sheehan 1980
Rhynchonellata - Spiriferida - Cyrtiidae
? Hedeina sp. Boucot 1957
Cyrtia sp. Dalman 1828
Sheehan 1980
Rhynchonellata - Spiriferida - Reticulariidae
Spirinella sp. Johnston 1941
Spirinella pauciplicata (Waite 1956)
Rhynchonellata - Spiriferida - Delthyrididae
Howellella sp. Kozlowski 1946
Sheehan 1980
Rhynchonellata - Orthida
Orthida indet. Schuchert and Cooper 1932
coarse-ribbed orthid
Orthida indet. Schuchert and Cooper 1932
Sheehan 1980
fine-ribbed orthid
Rhynchonellata - Orthida - Hesperorthidae
Flabellitesia flabellites
Dolerorthis flabellites (Foerste 1889)
genus name in quotes
Rhynchonellata - Orthida - Rhipidomellidae
Dalejina sp. Havlicek 1953
Sheehan 1980
Rhynchonellata - Orthida - Dicoelosiidae
Dicoelosia sp. King 1850
Dicoelosia biloba (Linnaeus 1758)
Sheehan 1980
Rhynchonellata - Orthida - Dalmanellidae
Isorthis sp. Kozlowski 1929
Sheehan 1980
Rhynchonellata - Atrypida - Atrypidae
Atrypa cf. parva
Atrypa sp. Dalman 1828
Sheehan 1980
Plectatrypa cf. imbricata (Sowerby and Murchison 1839)
Sheehan 1980
Rhynchonellata - Atrypida - Atrypinidae
Atrypina rugata
Rhynchonellata - Rhynchonellida - Machaerariidae
Ferganella borealis (Buch 1834)
recombined as Stegerhynchus borealis
Rhynchonellata - Rhynchonellida - Trigonirhynchiidae
Ancillotoechia sp. Havlicek 1959
Sheehan 1980
sp. A
Rhynchonellata - Rhynchonellida - Rhynchonellidae
Rhynchonellidae indet. Gray 1848
Sheehan 1980
Rhynchonellata - Pentamerida - Pentameridae
Pentameroides sp. Schuchert and Cooper 1931
Rhynchonellata - Pentamerida - Stricklandiidae
Microcardinalia sp. Boucot and Ehlers 1963
Rhynchonellata - Pentamerida - Camerellidae
? Camarella sp. (Billings 1859)
Sheehan 1980
original and current combination Camerella
Strophomenata - Strophomenida
Strophomenida indet. Opik 1934
Strophomenata - Strophomenida - Strophochonetidae
Protochonetes sp. Muir-Wood 1962
Sheehan 1980
Anthozoa - Cystiphyllida - Palaeocyclidae
Palaeocyclus eurylophus
? Rhabdocyclus sp. Lang and Smith 1939
Rhabdocyclus depressus
Anthozoa - Cystiphyllida - Tryplasmatidae
Tryplasma radicula
Anthozoa - Cystiphyllida - Goniophyllidae
Rhizophyllum inornatum
Anthozoa - Stauriida - Streptelasmatidae
? Asthenophyllum ? orthoseptatum
Anthozoa - Stauriida - Amplexidae
Amplexoides sp. Wang 1947
? Amplexoides ? radicosi
Anthozoa - Stauriida - Ptychophyllidae
? Ptychophyllum sp. Milne-Edwards and Haime 1850
see common names

Geography
Country:United States State/province:Nevada
Coordinates: 38.5° North, 115.0° West (view map)
Paleocoordinates:9.8° South, 70.7° West
Basis of coordinate:estimated from map
Geographic resolution:local area
Time
Period:Silurian
*Epoch:Late/Upper Llandovery - Early/Lower Wenlock
Key time interval:Llandovery - Wenlock
Age range of interval:443.80000 - 427.40000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Laketown Dolomite
Stratigraphic resolution:formation
Stratigraphy comments: Late Llandovery (C6) to Early Wenlock. Jack Valley and Gettel Members of Laketown Dolomite.
Lithology and environment
Primary lithology:bioturbation argillaceous,silty dolomite
Includes fossils?Y
Lithology description: "The strata containing this community have the highest silt-clay content in the Laketown Dolomite, which is typically a very clean carbonate."
Environment:deep subtidal shelf Tectonic setting:cratonic basin
Geology comments: "...deepest water facies of the Laketown Dolomite...probably in small basins on the carbonate platform. Sediments intensely bioturbated. Noevidence of wave activity. Storm scouring absent. Deposition below storm wave base. BA 4."

2003:04:07 SEP Environmental calls based on given lithologic description and knowledge of regional strat.
Taphonomy
Collection methods and comments
Reason for describing collection:paleoecologic analysis
Collection method comments: Combined are brachiopods of USGS localities 19185,19187,19189-91,19201-04,19206,19208-09, and 19211, and corals listed by Boucot. Sheehan (PBDB ref. 6949, table 10) gives abundances for brachiopods.
Metadata
Database number:24787
Authorizer:M. Foote Enterer:M. Foote
Modifier:M. Foote Research group:marine invertebrate
Created:2002-08-20 09:39:46 Last modified:2006-09-15 15:14:05
Access level:the public Released:2002-08-20 09:39:46
Creative Commons license:CC BY
Reference information

Primary reference:
6948. A. J. Boucot. 1999. Some Wenlockian-Geddinian, chiefly brachiopod dominated communities of North America. In A. J. Boucot, J. D. Lawson (eds.), Paleocommunities--a case study from the Silurian and Lower Devonian 549-591 [M. Foote/M. Foote/P. Wagner]

Secondary references:

6949 P. M. Sheehan. 1980. Paleogeography and marine communities of the Silurian carbonate shelf in Utah and Nevada. in T. D. Fouch and E. R. Magathan, eds. Paleozoic paleogeography of west-central United States. Rocky Mountain Section, SEPM 19-37 [M. Foote/M. Foote/M. Foote]