USGS Mesozoic loc. 2999: Bajocian, Alaska
collected by T.W. Stanton, G.C. Martin, A. Brown 1904

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Bivalvia - Trigoniida - Myophorellidae
Myophorella aff. dawsoni Whiteaves 1878
see common names

Geography
Country:United States State/province:Alaska
Coordinates: 60.2° North, 152.7° West (view map)
Paleocoordinates:28.9° North, 84.4° West
Basis of coordinate:estimated from map
Time
Period:Jurassic Epoch:Middle Jurassic
Stage:Bajocian 10 m.y. bin:Jurassic 4
Key time interval:Bajocian
Age range of interval:170.30000 - 168.30000 m.y. ago
Stratigraphy
Formation:Fitz Creek Siltstone
Stratigraphy comments: Middle Bajocian
Lithology and environment
Primary lithology: silty,conglomeratic sandstone
Secondary lithology: "limestone"
Includes fossils?Y
Includes fossils?Y
Lithology description: 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.
Environment:marine indet.
Taphonomy
Modes of preservation:body,cast,mold/impression
Size of fossils:macrofossils,mesofossils,microfossils
Collection methods and comments
Reason for describing collection:taxonomic analysis
Collectors:T.W. Stanton, G.C. Martin, A. Brown Collection dates:1904
Metadata
Database number:139472
Authorizer:G. Stanley Enterer:H. Shepherd
Created:2013-02-12 07:11:42 Last modified:2013-02-11 14:11:42
Access level:the public Released:2013-02-12 07:11:41
Creative Commons license:CC BY
Reference information

Primary reference:

40842. 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]