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
•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
Bivalvia | |
Myophorella aff. dawsoni Whiteaves 1878 clam |