Paleobiota of the Green River Formation

The Green River Formation is a geological formation located in the Intermountain West of the United States, in the states of Colorado, Utah, and Wyoming. It comprises sediments deposited during the Early Eocene in a series of large freshwater lakes: Lake Gosiute, Lake Uinta, and Fossil Lake. It preserves a high diversity of freshwater fish, birds, reptiles, and mammals, with some sections of the formation qualifying as Konservat-Lagerstätten due to their extremely well-preserved fossils.

Bony fish

Primarily based on Grande (2001), with changes where necessary: Acipenseriformes Lepisosteiformes Amiiformes Hiodontiformes Osteoglossiformes Ellimmichthyiformes Clupeiformes Gonorynchiformes Cypriniformes Siluriformes Salmoniformes Percopsiformes Carangiformes Acanthuriformes Incertae sedis == Amphibians ==

Amphibians

Frogs Salamanders == Reptiles ==

Reptiles

Squamates Crocodilians Turtles == Birds ==

Birds

Lithornithiformes Anseriformes Galliformes Coliiformes Leptosomiformes Coraciiformes Piciformes Strisores Musophagiformes Mirandornithes Suliformes Pelecaniformes Charadriiformes Gruiformes Eufalconimorphae Neoaves incertae sedis Two other genera, "Eoeurypyga" (a stem-sunbittern) and "Wyomingcypselus" (an early apodiform) are mentioned only in a 2002 dissertation, and are presently nomina nuda. Avian ichnofossils == Mammals ==

Mammals

Partially based on Grande (1984). Aside from the few well-preserved mammals found in Fossil Lake, a majority of Green River mammals are based on isolated bones and teeth: Metatheria Cimolesta Chiroptera Eulipotyphla Pan-Carnivora Paraxonia Pan-Perissodactyla Apatotheria Rodentia Primatomorpha == Arthropoda ==

Arthropoda

Arachnida Acariformes Araneae Parasitiformes Scorpiones Crustacea Branchiopoda Decapods Ostracoda Myriapoda Insecta Coleoptera Adephaga Elateriformia Polyphaga - Bostrichiformia Polyphaga - Cucujiformia Polyphaga - Scarabaeiformia Polyphaga - Staphyliniformia Dictyoptera Diptera Hemiptera Hymenoptera Lepidoptera Mantodea Megaloptera Neuroptera Raphidioptera Odonata Primarily based on Bechly et al (2020): Orthoptera Psocodea Strepsiptera Thysanoptera Trichoptera == Mollusks ==

Mollusks

Based on Grande (1984): Bivalvia Gastropoda ==Fungi==

Unicellular microbiota

Cyanobacteria Algae Charophytes Euglenozoans Amoebozoans Cercozoans ==Plants==

Plants

Liverworts Lycophytes Ferns Cycadalean palynomorphs Conifers Conifer palynomorphs Gnetalean palynomorphs Magnoliids Magnoliid palynomorphs Monocots Monocot palynomorphs Ceratophyllales Eudicots Basal Eudicots Superasterids Superrosids Eudicot palynomorphs Angiosperms of uncertain affiliation Plants of uncertain affiliation == References ==

Source: Wikipedia ↗

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