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USGS Mesozoic loc. 19625, Granite County, Montana, USA
Lat/Long (Decimal) | 46.7167,-113.3 |
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Co-ordinates Derivation | estimated from map |
Given Location | Montana, United States |
Mindat.org Region (for given coordinates) | Granite County, Montana, USA |
Collections
Collection | Reference | Stratigraphic Name | Comments | Lithology | Age |
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USGS Mesozoic loc. 19623, Drummond area, Western Montana | Imlay R. W. (1962) | Sawtooth - Upper Siltstone | from yellowish-gray shale and silty nodular limestone in lower 29 ft of upper siltstone member of Sawtooth formation; the Upper Siltstone member is probably of Bathonian age | "shale" | 168.3 - 166.1 Ma Middle Jurassic |
USGS Mesozoic loc. 19625, Drummond area, Western Montana | Imlay R. W. (1962) | Sawtooth - Middle Shale | from 44 ft of gray calcareous shale and shaly limestone whose base is about 73 ft above base of Sawtooth formation and whose top is about 113 ft below top of formation; the Middle Shale member is probably of Bajocian to Bathonian age | "shale" | 170.3 - 166.1 Ma Middle Jurassic |
Recorded Fossils
Accepted Name | Hierarchy | Age |
---|---|---|
Modiolus sp. genus | Animalia : Mollusca : Bivalvia : Mytilida : Mytilidae : Modiolus | 168.3 - 166.1 Ma Middle Jurassic |
Gryphaea sp. genus | Animalia : Mollusca : Bivalvia : Ostreida : Gryphaeidae : Gryphaea | 168.3 - 166.1 Ma Middle Jurassic |
Lopha sp. genus | Animalia : Mollusca : Bivalvia : Ostreida : Ostreidae : Lopha | 168.3 - 166.1 Ma Middle Jurassic |
Camptonectes sp. genus | Animalia : Mollusca : Bivalvia : Pectinida : Pectinidae : Camptonectes | 168.3 - 166.1 Ma Middle Jurassic |
Pleuromya subcompressa species | Animalia : Mollusca : Bivalvia : Pholadida : Pleuromyidae : Pleuromya : Pleuromya subcompressa | 170.3 - 166.1 Ma Middle Jurassic |
Trigonia montanaensis species | Animalia : Mollusca : Bivalvia : Trigoniida : Trigoniidae : Trigonia : Trigonia montanaensis | 170.3 - 166.1 Ma Middle Jurassic |
Cobbanites sp. genus | Animalia : Mollusca : Cephalopoda : Ammonoidea : Perisphinctidae : Cobbanites | 168.3 - 166.1 Ma Middle Jurassic |
References
Imlay R. W. (1962) Jurassic (Bathonian or Early Callovian) Ammonites from Alaska and Montana, Geological Survey Professional Paper 374-C, 1-32 |
Data courtesy of: PBDB: The Paleobiology Database, Creative Commons CC-BY licenced. , GBIF: the Global Biodiversity Information Facility, various licences, iDigBio, various licences, and EOL: The Encyclopedia of Life (Open Data Public Domain). Because fossils are made of minerals too!