Upper Pilgrim Fm. #4: Dresbachian, Montana

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Tergomya - Tryblidiida - Tryblidiidae
Propilina sp. Kobayashi 1933
originally entered as "Proplina sp."
Tergomya - Kiringellida
Hypseloconus sp. Berkey 1898
Rhynchonellata - Orthida - Eoorthidae
Eoorthis sp. Walcott 1908
Strophomenata - Billingsellida - Billingsellidae
Billingsella sp. Hall and Clarke 1892
Lingulata - Lingulida - Dysoristidae
Dysoristus sp. Bell in Lochman and Duncan 1941
Trilobita - Corynexochida - Cheilocephalidae
Cheilocephalus sp. Berkey 1898
Trilobita - Asaphida - Asaphidae
Maryvillia sp. Walcott 1916
Trilobita - Ptychopariida - Lonchocephalidae
Glaphyraspis sp. Resser 1937
Trilobita - Ptychopariida - Kingstoniidae
Blountia sp. Walcott 1916
Trilobita - Olenida - Aphelaspidae
Aphelaspis sp. Resser 1935
Labiostria sp. Palmer 1954
see common names

Geography
Country:United States State/province:Montana
Coordinates: 46.0° North, 112.5° West (view map)
Paleocoordinates:5.5° South, 81.3° West
Basis of coordinate:based on political unit
Time
Period: Cambrian Epoch: Furongian
10 m.y. bin: Cambrian 5
*Epoch:Upper
*Local age/stage:Dresbachian
Key time interval: Dresbachian Zone:  Aphelaspis
Age range of interval: 497 - 485.4 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Pilgrim
Stratigraphy comments: "Dresbachian, Aphelaspis zone"
Lithology and environment
Primary lithology: grainstone
Environment:marine indet. Tectonic setting:cratonic basin
Geology comments: "calcarenites, shallow carbonate, BA3, cratonic"
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Reason for describing collection:taxonomic analysis
Taxonomic list comments:"C. Lochman and C.-H. Hu, 1962. An Aphelaspis zone faunule from Loga[illeg.] Montana. J.Paleo 36:431-441"
Metadata
Also known as:SW Montana
Database number:236
Authorizer:J. Sepkoski Enterer:M. Sommers
Modifier:J. Ju Research group:marine invertebrate
Created:1998-11-20 10:07:18 Last modified:2016-12-29 12:38:47
Access level:the public Released:1998-11-20 10:07:18
Creative Commons license:CC BY
Reference information

Primary reference:

594. C. Lochman and C. Hu. 1962. An Aphelaspis Zone faunule from Logan, Montana. Journal of Paleontology 36(3):431-441 [M. Patzkowsky/P. Borkow/J. Ju]