"Turritella Agate" (chertified fossiliferous lacustrine limestone) (Laney Member, Green River Formation, Middle Eocene; North Barrel Springs Draw, south of Wamsutter, Wyoming, USA) 4
"Turritella Agate" - chertified fossiliferous lacustrine limestone in the Eocene of Wyoming, USA.
This is a sample of Wyoming's famous "Turritella Agate" in the Green River Formation. It consists of richly fossiliferous, chertified limestone with abundant Elimia tenera gastropods (misnamed "Turritella" by rockhounds). The whitish to bluish-gray fossils shown above are internal molds of Elimia snails - the original calcareous shells are gone (dissolved away). This fossil snail horizon was deposited in an ancient lake environment, as was the rest of the Green River Formation.
Classification of Elimia fossil snails: Animalia, Mollusca, Gastropoda, Cerithioidea, Pleuroceridae
Stratigraphy: base of Hartt Cabin Bed, Laney Member, Green River Formation, Middle Eocene
Locality: outcrop & talus west of Delaney Rim Road (~200 meters northeast of BP America Production Company's Wild Rose Well # 35-1) (NE1/4 SE1/4 Section 35, T18N, R95W), northern side of North Barrel Springs Draw, ~21 km south-southwest of Wamsutter, Wyoming, USA (41° 29' 34.17" North, 108° 04' 04.57" West)
"Turritella Agate" (chertified fossiliferous lacustrine limestone) (Laney Member, Green River Formation, Middle Eocene; North Barrel Springs Draw, south of Wamsutter, Wyoming, USA) 4
"Turritella Agate" - chertified fossiliferous lacustrine limestone in the Eocene of Wyoming, USA.
This is a sample of Wyoming's famous "Turritella Agate" in the Green River Formation. It consists of richly fossiliferous, chertified limestone with abundant Elimia tenera gastropods (misnamed "Turritella" by rockhounds). The whitish to bluish-gray fossils shown above are internal molds of Elimia snails - the original calcareous shells are gone (dissolved away). This fossil snail horizon was deposited in an ancient lake environment, as was the rest of the Green River Formation.
Classification of Elimia fossil snails: Animalia, Mollusca, Gastropoda, Cerithioidea, Pleuroceridae
Stratigraphy: base of Hartt Cabin Bed, Laney Member, Green River Formation, Middle Eocene
Locality: outcrop & talus west of Delaney Rim Road (~200 meters northeast of BP America Production Company's Wild Rose Well # 35-1) (NE1/4 SE1/4 Section 35, T18N, R95W), northern side of North Barrel Springs Draw, ~21 km south-southwest of Wamsutter, Wyoming, USA (41° 29' 34.17" North, 108° 04' 04.57" West)
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