USNM 36406, Teller Quadrangle, Don River area, York Mountain, Seward Peninsula (Ordovician of the United States)

Also known as Teller Quadrangle, Don River area, York Mountain, Seward Peninsula. R40W T1N Sec. 14

Where: Alaska (65.5° N, 165.9° W: paleocoordinates 17.7° N, 37.8° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Port Clarence Limestone Formation, Richmondian (449.6 - 445.5 Ma)

• bed-level stratigraphic resolution

Environment/lithology: bioturbated, dolomitic wackestone and bioturbated, dolomitic packstone

• Thin to medium thickness beds (3-30 cm thick) of bioturbated skeletal and pellta dolomitc wacketson and packstone. Megafossils are rare to locally abundant and inlcude brachiopods, gastropods, corals, pelecypods (Tandrediopsis), stromatoporoids, trilobites, ostracodes, bryozoans and polyplacophorans. Skeletal matieral is heavily micritized, indicating deposition within the photic zone.

Size class: macrofossils

Preservation: original silica, replaced with silica

Reposited in the USNM

Collection methods: bulk, chemical,

Primary reference: D. M. Rohr. 1988. Upper Ordovician gastropods from the Seward Peninsula, Alaska. Journal of Paleontology 62(4):551-566 [P. Wagner/P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 49351: authorized by Pete Wagner, entered by Pete Wagner on 13.04.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Gastropoda
 Euomphalina - Euomphalidae
Sinutropis esthetica n. sp., "Pachystrophia spiralis" = Sinutropis spiralis
Sinutropis esthetica n. sp. Perner 1903 snail
"Pachystrophia spiralis" = Sinutropis spiralis Rohr 1988 snail
 Murchisoniina - Loxonematidae
Rhabdostropha primitiva4
Rhabdostropha primitiva4 Longstaff 1924 snail
Rhabdostropha primitiva
 Murchisoniina - Lophospiridae
Eunema cf. quadrisulcata4
Eunema cf. quadrisulcata4 Ulrich and Scofield 1897 snail
 Murchisoniina - Trochonematidae
Trochonema wartheni2, Trochonemella reusingi
Trochonema wartheni2 Hussey 1926 snail
Trochonema n. sp.
Trochonemella reusingi Rohr 1988 snail
 Murchisoniina - Eotomariidae
Paraliospira angulata
Paraliospira angulata Ulrich and Scofield 1897 snail
 Murchisoniina - Straparollinidae
Daidia sewardensis1
Daidia sewardensis1 Frýda et al. 2001 snail
 Bellerophontida - Temnodiscidae
"Alaskadiscus donensis" = Alaskodiscus donensis3
"Alaskadiscus donensis" = Alaskodiscus donensis3 Rohr et al. 2003 snail
1Frýda et al. 2001; 2Hussey 1926; 3Rohr et al. 2003; 4Wagner 2023