Unit 10, Lower Slide Lake (Jurassic of the United States)

Where: Teton County, Wyoming (43.6° N, 110.5° W: paleocoordinates 35.5° N, 50.5° W)

• coordinate estimated from map

When: B Member, Bajocian (170.3 - 168.3 Ma)

• Unit 10, Member B of unknown formation name, equivalent to Twin Creek Limestone and Sundance Formation. 35ft. thick.

Environment/lithology: gray, argillaceous limestone

• Limestone, mostly shaly, fairly soft, some beds from 4 to 10 inches thick, dark gray to grayish black.

Size class: macrofossils

Primary reference: R. W. Imlay. 1956. Interpretations of the Marine Jurassic Fossil Record at Lower Slide Lake, Teton County, Wyoming. Wyoming Geological Association 11th Annual Field Conference Guidebook 70-71 [S. Holland/P. Monarrez]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 172981: authorized by Steven Holland, entered by Pedro Monarrez on 06.09.2015

Creative Commons license: CC BY (attribution)

Taxonomic list

Bivalvia
 Trigoniida - Trigoniidae
 Carditida - Astartidae
Astarte meeki Stanton 1899 clam
 Thraciida - Thraciidae
Thracia weedi Stanton 1899 clam
 Pholadomyida - Pholadomyidae
Homomya gallatinensis Stanton 1899 clam
 Pandorida - Laternulidae
Cercomya punctata Stanton 1899 clam
 Cardiida - Anthracosiidae
"Pleuromya subcompressa" = Myacites (Pleuromya) subcompressa
"Pleuromya subcompressa" = Myacites (Pleuromya) subcompressa Meek 1873 clam
 Arcida - Cucullaeidae
"? Idonearca haguei" = Cucullaea (Idonearca)
"? Idonearca haguei" = Cucullaea (Idonearca) clam
 Ostreida - Pinnidae
 Ostreida - Bakevelliidae
Gervillia dolabrata, "Gervillia montanaensis" = Gervillaria montanaensis
"Gervillia montanaensis" = Gervillaria montanaensis Meek 1873 oyster
 Ostreida - Gryphaeidae
Gryphaea planoconvexa Whitfield 1876 oyster
 Pectinida - Pectinoidae
Cephalopoda
 Ammonitida - Sphaeroceratidae