USGS Mesozoic loc. 2999 (Jurassic of the United States)

Where: Alaska (60.2° N, 152.7° W: paleocoordinates 28.9° N, 84.4° W)

• coordinate estimated from map

When: Fitz Creek Siltstone Formation, Bajocian (170.3 - 168.3 Ma)

• Middle Bajocian

Environment/lithology: marine; silty, conglomeratic sandstone and limestone

• Talus, probably mostly from beds 11 to 14 of Martin (1926, p. 142; see also Imlay, 1964, p. B23, loc. 22)

•From Martin, 1926:

•11. Dark limestone with abundant fossils, Sphaeroceras cepoides, Pleuromya, etc. (lots 2997 and 10516) 2-4 ft

•12. Dark shale 3 ft

•13. Dark conglomerate rock (arkose) 7 ft

•14. Dark shale with conglomerate bands and with fossils (lot 2998) 26 ft

•From Imlay, 1964:

•Fitz Creek Siltstone. From silty sandstone 150 ft below top. Same as unit 19 of section by Stanton and Martin.

Size classes: macrofossils, mesofossils, microfossils

Preservation: cast, mold/impression

Collected by T.W. Stanton, G.C. Martin, A. Brown in 1904

Primary reference: T. P. Poulton. 1979. Jurassic Trigoniid Bivalves from Canada and Western United States of America. Geological Survey of Canada Bulletin 282 [G. Stanley/H. Shepherd/H. Shepherd]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 139472: authorized by George Stanley, entered by Hannah Shepherd on 12.02.2013

Creative Commons license: CC BY (attribution)

Taxonomic list

 Trigoniida - Myophorelloidae
Myophorella aff. dawsoni Whiteaves 1878 clam