Where: Alaska (59.7° N, 153.3° W: paleocoordinates 31.6° N, 86.8° W)
• coordinate based on nearby landmark
When: Bowser Formation (Tuxedni Group), Callovian (166.1 - 163.5 Ma)
• 22550 - Probably Callovian, 515 to 545 m (1700-1800 ft) above base of Bowser Formation
Environment/lithology: marine; siltstone and massive sandstone
•present in the Bowser Formation. The lowest fauna occupies an interval 400-750 feet thick immediately overlying the Twist Creek Siltstone. The interval is mainly siltstone, but contains several massive sandstone and conglomerate units"
Size classes: macrofossils, mesofossils, microfossils
Collected by D. Hill in 1950; reposited in the USNM
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 139589: authorized by George Stanley, entered by Hannah Shepherd on 14.02.2013
Creative Commons license: CC BY (attribution)
Taxonomic list
Bivalvia | |
Vaugonia doroschini Eichwald 1871 clam |