Alan Mountain upper member (upper part), Alan Mountain Limestone: Osagean, Montana

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Anthozoa - Stauriida - Aulophyllidae
Rylstonia sp. Hudson and Platt 1927
Anthozoa - Stauriida - Hapsiphyllidae
Zaphrentites sp. Hudson 1941
Anthozoa - Stauriida - Zaphrentoididae
Homalophyllites sp. Easton 1944
Anthozoa - Stauriida - Cyathaxoniidae
Cyathaxonia sp. Michelin 1847
Anthozoa - Stauriida - Uraliniidae
Vesiculophyllum sp. Easton 1944
Enygmophyllum sp. Fomichev 1931
Anthozoa - Auloporida - Syringoporidae
Syringopora sp. Goldfuss 1826
Ostracoda - Podocopida - Bairdiidae
Bairdia sp. M'Coy 1844
originally entered as "Biardia sp."
Stenolaemata - Cryptostomata - Fenestellidae
Fenestella sp. Lonsdale 1839
Rhynchonellata - Spiriferinida - Punctospiriferidae
? Punctospirifer sp. North 1920
originally entered as "? Punctospirifer sp."
Rhynchonellata - Spiriferinida - Syringothyrididae
? Syringothyris sp.
originally entered as "? Syringothyris sp."
Rhynchonellata - Spiriferinida - Dimegelasmidae
Dimegelasma sp. Cooper 1942
Rhynchonellata - Athyridida - Athyrididae
Cleiothyridina sp. Buckman 1906
Composita sp. Brown 1849
Rhynchonellata - Spiriferida - Elythidae
? Torynifer sp.
originally entered as "? Torynifer sp."
Rhynchonellata - Spiriferida - Brachythyrididae
Brachythyris sp. M'Coy 1844
Rhynchonellata - Spiriferida - Spiriferidae
Spirifer sp. Sowerby 1818
3 species
Rhynchonellata - Rhynchonellida - Trigonirhynchiidae
? Rhynchotreta sp. Hall 1879
originally entered as "? Rhynchotreta sp."
Strophomenata - Strophomenida
Strophomenida indet. Opik 1934
orthotetid brachiopod
Strophomenata - Strophomenida - Rafinesquinidae
Leptaena sp. Dalman 1828
Strophomenata - Productida - Productidae
Buxtonia sp.
Dictyoclostus sp.
2 species
Strophomenata - Orthotetida - Schuchertellidae
? Schuchertella sp. Girty 1904
originally entered as "? Schuchertella sp."
Gastropoda - Archaeogastropoda
Archaeogastropoda indet. Thiele 1925
high spired gastropod, not Loxonema
Gastropoda - Euomphalina - Euomphalidae
Straparollus sp. de Montfort 1810
(Euomphalus)
see common names

Geography
Country:United States State/province:Montana
Coordinates: 47.4° North, 105.6° West (view map)
Paleocoordinates:5.8° South, 39.8° West
Basis of coordinate:based on political unit
Geographic resolution:basin
Time
Period:Carboniferous Epoch:Mississippian
10 m.y. bin:Carboniferous 1-2
*Local age/stage:? Osage
Key time interval:Osagean
Age range of interval:351.90000 - 343.10000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Alan Mountain Limestone Member:upper
Stratigraphic resolution:group of beds
Stratigraphy comments: "Mississippian, Osage?", upper part horizon
Lithology and environment
Primary lithology: cherty/siliceous "limestone"
Environment:marine indet.
Geology comments: "thick bedded ls and dolomitic ls; finely xtalline; irreg. bedding; chert. BA4"
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Reason for describing collection:general faunal/floral analysis
Taxonomic list comments:"Mudge et al. 1962"
Metadata
Database number:555
Authorizer:J. Sepkoski Enterer:M. Sommers
Modifier:J. Ju Research group:marine invertebrate
Created:1999-01-14 11:03:27 Last modified:2017-01-06 17:16:40
Access level:the public Released:1999-01-14 11:03:27
Creative Commons license:CC BY
Reference information

Primary reference:
60995. M. R. Mudge, W. J. Sando, and J. T. Dutro, Jr. 1962. Mississippian Rocks of Sun River Canyon Area, Sawtooth Range, Montana. AAPG Bulletin 46(11):2003-2018 [M. Uhen/J. Ju/J. Ju]