Fossils of the Green River Formation

Fossil Galleries

 

Green River Formation Fossils

Also see:
Green River Fossil Site
Green River Fossil Fish Gallery

 


Green River Formation Vertebrate Fossils

Gallinuloides wyomingensis
Chelidridae Turtle Fossil
Icaronycteris Fossil Bat
Lepisosteus simplex
(gar fish - 29 inches)
Very rare
Chelidridae
Snapping Turtle
Icaronycteris
Fossil Bat
(oldest known flying mammal in the fossil record)
     
Gallinuloides wyomingensis
A basal galliform bird
     

Green River Formation Plant Fossils

Acer Plant Fossil
Plant Fossils Association
Acer sp.
Green River Shale, Wardell Ranch, Colorado
Plant Fossils Association
Green River Shale, Uintah County, Utah
Zelkova sp.
Green River Shale, Uintah County, Utah
Platanus wyomingensis
Green River Formation, Colorado
Dilodendron foreale
Green River Shale, Uintah County, Utah
Populus willmattae
Green River Shale, Uintah County, Utah
Leguminosites lesquereuxiana
Green River Shale, Uintah County, Utah
Araliophyllum quina
Green River Shale, Uintah County, Utah
Beetle in a rare association with a fossil flower.
Green River Shale, Uintah County, Utah
Dilodendron foreale
Green River Shale, Wardell Ranch, Colorado
Cercidiphyllum sp.
Green River Shale, Wyoming
Lygodium kaulfussi Climbing Fern; Family: Schizaeaceae
Green River Shale, Uintah County, Utah
Cardiospermum coloradensis Plant Fossil
Palm Frond Fossil
Astronium Flower and Erythrina Coral Tree Plant Fossil Association  
Cardiospermum coloradensis
Family Sapindaceae
Green River Shale, Uintah County, Utah
Palm Frond - 5' tall
Sabalites
Green River Shale, Wyoming
Astronium Flower and Erythrina Coral Tree Plant Fossil Association

Green River Formation Invertebrate Fossils

Procambarus primaevus fossil crayfish
   
Crayfish Procambarus primaevus
Order Decapoda;
Family Cambaridae
Fossil Lake, Kemmerer, Wyoming
Bechleja rostrata Shrimp Order Decapoda; Family Palaemonidae
Fossil Lake, Kemmerer, Wyoming
   
 
Stromatolites
Chlorellopsis sp.
Middle Eocene
Green River Formation, Tipton Shale Member, Green River Basin, Wyoming
Specimen has been polished by wind and sand. May be of algal biogenic origin.
Chlorellopsis sp.
Eocene
Green River Formation, Colorado
Interestingly, this Cryptozoon type stromatolite was very likely to have been built by plant-like green or red, algae (Chlorophycophyta), as opposed to cyanobacteria (that are Eubacteria). It is hypothesized that red and green algae appeared some 800 million years ago having acquired chloroplasts from eukaryotes through endosymbiosis to carry
out photosynthetic metabolism using sunlight for their energy needs.

 
Weevil
Insect Order Coleoptera
Family Curculionidae
Green River Shale, Utah
Scorpionfly
Insect Order Mecoptera
Green River Shale, Utah
Mosquito
Insect Order Diptera
Family Culiclidae
Green River Shale, Uintah County, Utah
Damselfly
Insect Order Odonata
Family Chlorocyphidae
Green River Shale, Utah
Planthopper Fossil
Cricket and Cranefly
Green River Formation Weevil Fossil
Robber Fly and Cranefly Insect Order Diptera
Green River Shale, Utah
Planthopper
Insect Order Homoptera
Family Fulgoridae
Green River Shale, Utah
Cricket and Cranefly
Insect Orders Orthoptera and Diptera
Green River Shale, Utah
Snout Beetle
Insect Order Coleoptera
Family Curculionidae
Green River Shale, Utah

Green River Formation Ichnofossils

 
   
 
Extinct Brontotheriid Fossil Tracks
Green River Formation, Sevier County, Utah