M1299–SD, Islet in Tuxekan Narrows-Karheen Strait area: Eifelian, Alaska

List of taxa
Where & when
Taphonomy & methods
Metadata & references
Taxonomic list
Gastropoda - Murchisoniina - Cheeneetnukiidae
Cheeneetnukia frydai Blodgett and Cook 2002
Blodgett and Cook 2002 11 specimens
Gastropoda - Murchisoniina - Subulitidae
Subulites (Fusispira) sp. (Hall 1872)
3 specimens
original and current combination Fusispira
specimens that appear to be conspecific, or closely allied with Subulites (Fusispira) sp. Blodgett, 1992
Gastropoda - Euomphalina
Kitakamispira ormistoni (Blodgett 1992)
3 specimens
recombined as Kitikamispira ormistoni
Gastropoda - Euomphalina - Pseudophoridae
Astralites sp. Whiteaves 1892
14 specimens
Gastropoda - Cycloneritida - Neritopsidae
Paffrathopsis informal n.sp.
28 specimens
Gastropoda - Pleurotomariida - Gosseletinidae
Euryzone sp. Koken 1896
15 specimens
see common names

Country:United States State/province:Alaska
Coordinates: 55.8° North, 123.3° West (view map)
Paleocoordinates:11.2° South, 57.9° West
Basis of coordinate:estimated from map
Geographic resolution:local area
Period:Devonian Epoch:Middle Devonian
Stage:Eifelian 10 m.y. bin:Devonian 3
Key time interval:Eifelian
Age range of interval:393.30000 - 387.70000 m.y. ago
Formation:Wadleigh Limestone
Stratigraphic resolution:formation
Lithology and environment
Primary lithology: lithified argillaceous "limestone"
Secondary lithology: calcareous "shale"
Lithology description: The Wadleigh Limestone, named by Eberlein and Churkin (1970), is a medium- to thick-bedded “relatively pure, fossil-fragmental limestone,” with interbedded argillaceous limestone and calcareous shale in the lower part of the unit. The limestone is rich in corals, crinoid columnals, and the stromatoporoid Amphipora and contains less abundant brach-iopods, gastropods, bivalves, nautiloids, ammonoids, and ostracodes. The unit is inferred to represent patch reefs, reef breccia, and reef-peripheral deposits (Eberlein and Churkin, 1970).
Environment:carbonate indet.
Modes of preservation:body,replaced with silica
Size of fossils:macrofossils
Collection methods and comments
Reason for describing collection:biostratigraphic analysis
Museum repositories:USNM
Also known as:Evans field No. 68AEs596
Database number:63975
Authorizer:P. Wagner Enterer:P. Wagner
Modifier:J. Alroy Research group:marine invertebrate
Created:2006-08-28 13:14:01 Last modified:2009-04-03 12:32:08
Access level:the public Released:2006-08-28 13:14:01
Creative Commons license:CC BY
Reference information

Primary reference:

18439. R. B. Blodgett, D. M. Rohr, S.M. Karl and J.F. Baichtal. 2001. Early Middle Devonian (Eifelian) Gastropods from the Wadleigh Limestone in the Alexander Terrane of Southeastern Alaska Demonstrate Biogeographic Affinities with Central Alaskan Terranes (Farewell and Livengood) and Eurasia. United States Geological Survey Professional Paper 1678:105-110 [P. Wagner/P. Wagner]

Secondary references:

12011 R. B. Blodgett and A. G. Cook. 2002. Cheeneetnukiidae, a new Middle Devonian murchisonioid gastropod family, including the new genera Cheeneetnukia and Ulungaratoconcha based on representatives from Alaska and Australia. Memoirs of the Queensland Museum 48(1):17-28 [P. Wagner/P. Wagner/P. Wagner]