Green River Formation Fossils

Green River Formation Fossils

Photographs illustrating the extraordinary quality of fossil preservation.

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  Diplomystus dentatus with Knightia in its mouth

  Photo by Arvid Aase of Fossil Country Museum specimen

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  Knightia eocaena, approximately 11 cm long

  Photo by Arvid Aase of Fossil Country Museum specimen

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  Hiodon falcatus, approximately 19 cm long

  Photo by Arvid Aase of Black Hills Institute specimen

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  Priscacara liops mass mortality

  Photo by Arivd Aase

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  unidentified dragonfly, approximately 4.5 cm long

  Photo by Arvid Aase of Fossil Country Museum specimen

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  Onychonycteris finneyi (replica)

  Photo by Arvid Aase

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  Phareodus encaustus, 50 cm long

  Photo by Arvid Aase of Bob and Bonnie Finney specimen

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  Crossopholis magnicaudatus, approximately 1 m long

  Photo by Arvid Aase of Green River Stone Co. specimen

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  Heliobatus radians, approximately 30 cm long

  Photo by Arvid Aase of Charlie Nunn specimen

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  Mass mortality of Knightia eocaena

  Photo by Arvid Aase of Charlie Nunn specimen

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  Knightia alta, approximately 12.5 cm long

  Photo by Arvid Aase of Fossil Country Museum specimen

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  unidentified leaf, approximately 8 cm long

  Photo by Arvid Aase

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  unidentified flower

  Photo by Arvid Aase of Fossil Country Museum specimen

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  "Hyracotherium" sp.

  Photo by Arvid Aase of James E. Tynsky specimen

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  unidentified member of the Trionychidae family

  Photo by Arvid Aase of James E. Tynsky replica

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  unidentified flower

  Photo by Arvid Aase

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  unidentified leaf, approximately 3 cm long

  Photo by Arvid Aase

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  unidentified leaf, approximately 15 cm long

  Photo by Arvid Aase

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  inidentified leaf, approximately 5 cm long

  Photo by Arvid Aase

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  beetle of the family Buprestidae, 3.5 cm long

  Photo by Arvid Aase

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  unidentified insect, approximately 1 cm long

  Photo by Arvid Aase

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  unidentified insect of the order Hemiptera, 1.5 cm

  Photo by Arvid Aase

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  unidentified insect of the order Hemiptera

  Photo by Arvid Aase

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  unidentified fly, approximately 1 cm long

  Photo by Arvid Aase

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  unidentified beetle, approximately 4.5 cm long

  Photo by Arvid Aase

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  unidentified baenid turtle

  Photo by Arvid Aase

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  Procambarus primaevus, approximately 5 cm long

  Photo by Arvid Aase

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  Mioplosus labracoides, approximately 9 cm long

  Photo by Arvid Aase

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  Priscacara liops, approximately 13 cm long

  Photo by Arvid Aase

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  Palmites sp., approximately 2 meters long

  Photo by Arvid Aase

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