GSC loc. C-3217. Lowther Island: Late Emsian, Canada

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Conodonta - Ozarkodinida - Polygnathidae
Polygnathus perbonus
Ostracoda
Ostracoda indet. Latreille 1802
unclassified
Hyolitha indet. Marek 1963
Tentaculitida
Tentaculitida indet. Ljaschenko 1955
Rhynchonellata - Orthida - Schizophoriidae
Schizophoria sp. King 1850
9 specimens
Rhynchonellata - Rhynchonellida - Hebetoechiidae
Cassidirostrum radiatum n. sp.
16 specimens
Rhynchonellata - Rhynchonellida - Trigonirhynchiidae
Ancillotoechia rex
68 specimens
Rhynchonellata - Spiriferida - Elythynidae
Elythyna kingi n. sp.
105 specimens
Rhynchonellata - Spiriferida - Ambocoeliidae
Crurithyris sp. George 1931
29 specimens
Rhynchonellata - Atrypida - Atrypidae
Atrypa informal sp. C
15 specimens
Rhynchonellata - Athyridida - Athyrididae
? Leptathyris sp.
1 specimen
Rhynchonellata - Athyridida - Anoplothecidae
Bifida sp.
3 specimens
Rhynchonellata - Pentamerida - Gypidulidae
? Gypidula sp. Hall 1867
1 specimen
Strophomenata - Strophomenida - Stropheodontidae
Stropheodontidae indet. Caster 1939
3 specimens
Strophomenata - Strophomenida - Chonetidae
"Chonetes" informal sp. A
1 specimen
"Chonetes" informal sp. B
9 specimens
"Chonetes" informal sp. C
49 specimens
Strophomenata - Orthotetida - Schuchertellidae
"Schuchertella" sp. Girty 1904
2 specimens
"S."? sp.
Bivalvia
Pelecypoda indet. Goldfuss 1820
Gastropoda
Gastropoda indet. Cuvier 1795
Gastropoda - Murchisoniina - Gosseletinidae
Angyomphalus (Eoangyomphalus) arctica n. sp. Blodgett and Johnson 1992
Blodgett and Johnson 1992 22 specimens
Gastropoda - Bellerophontida
Bellerophontacea indet. M'Coy 1851
Tentaculita - Styliolinida - Styliolinidae
Styliolina sp. Karpinsky 1884
see common names

Geography
Country:Canada State/province:Nunavut County:Lowther Island
Coordinates: 74.6° North, 97.6° West (view map)
Paleocoordinates:0.3° North, 52.4° West (Wright 2013)
Basis of coordinate:based on political unit
Geographic resolution:outcrop
Time
Period: Devonian Epoch: Early Devonian
Stage: Emsian 10 m.y. bin: Devonian 2
*Local age/stage:Late/Upper Emsian
Key time interval: Late Emsian Conodont zone:  Polygnathus inversus
Age range of interval: 398.3 - 393.3 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Disappointment Bay Member:Middle
Regional section:Member Regional bed:125 ft
Regional order:bottom to top
Stratigraphic resolution:bed
Stratigraphy comments: Three collections, C2681, C2682, and C3217, are in increasing stratigraphic order, the first from the lowest of three members, the second two from the middle member. C3217 seen as correlative with Elythyna beds of Nevada and conodont zone 9 of Klapper et al. 1971.
Lithology and environment
Primary lithology: dolomite
Lithology description: Formation as a whole: "basal conglomerate, fine grained sandstone, and predominantly limestone and dolomite." "The lower member is a dark limestone 125 feet thick...The middle member is 325 feet thick and consists of a light-colored dolomite including reef knolls developed at its base...The upper member consists of anhydrite, sandstone, siltstone, and dolomite and has not yielded fossils."
Environment:open shallow subtidal Tectonic setting:cratonic basin
Geology comments: SEP environmental call based on given info
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils,mesofossils
Collection methods and comments
Collection excludes:some macrofossils
Reason for describing collection:taxonomic analysis
Museum repositories:GSC
Taxonomic list comments:Focus here is on brachiopods. Some other elements mentioned in passing.
Metadata
Database number:26625
Authorizer:M. Foote, P. Wagner Enterer:M. Foote, P. Wagner
Modifier:M. Uhen Research group:marine invertebrate
Created:2002-10-18 14:37:36 Last modified:2017-05-18 17:00:33
Access level:the public Released:2002-10-18 14:37:36
Creative Commons license:CC BY
Reference information

Primary reference:

7309. J. G. Johnson. 1975. Late Early Devonian brachiopods from the Disappointment Bay Formation, Lowther Island, Arctic Canada. Journal of Paleontology 49(6):947-978 [M. Foote/M. Foote/M. Foote]

Secondary references:

255 R. B. Blodgett and J. G. Johnson. 1992. Early Middle Devonian (Eifelian) Gastropods of Central Nevada. Palaeontographica Abteilung A 222:85-139 [P. Wagner/P. Wagner/P. Wagner]