M1299–SD, Islet in Tuxekan Narrows-Karheen Strait area (Devonian of the United States)

Also known as Evans field No. 68AEs596

Where: Alaska (55.8° N, 123.3° W: paleocoordinates 11.2° S, 57.9° W)

• coordinate estimated from map

• local area-level geographic resolution

When: Wadleigh Limestone Formation, Eifelian (393.3 - 387.7 Ma)

• formation-level stratigraphic resolution

Environment/lithology: lithified, argillaceous limestone and calcareous shale

• 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).

Size class: macrofossils

Preservation: replaced with silica

Reposited in the USNM

Primary reference: 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]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 63975: authorized by Pete Wagner, entered by Pete Wagner on 28.08.2006

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Gastropoda
 Murchisoniina - Gosseletinidae
Euryzone sp.
Euryzone sp. Koken 1896 snail
 Murchisoniina - Cheeneetnukiidae
Cheeneetnukia frydai
Cheeneetnukia frydai Blodgett and Cook 2002 snail
 Murchisoniina - Subulitidae
"Subulites (Fusispira) sp." = Fusispira
"Subulites (Fusispira) sp." = Fusispira Hall 1872 snail
specimens that appear to be conspecific, or closely allied with Subulites (Fusispira) sp. Blodgett, 1992
 Neritoina - Neritopsidae
Paffrathopsis "n.sp."
Paffrathopsis "n.sp." Frýda 2000 snail
 Euomphalina - Pseudophoridae
Astralites sp.
Astralites sp. Whiteaves 1892 snail
 Euomphalina -
"Kitakamispira ormistoni" = Kitikamispira ormistoni
"Kitakamispira ormistoni" = Kitikamispira ormistoni Blodgett 1992 snail