Multiple types of fish fossils have been found in the Green River Formation. Approximately 60 vertebrate taxa have been unearthed in the Green River Formation, and around 95% of the fish fossils that are unearthed are Knightia fish. These fish are so commonly discovered at Green River that the Knightia has been named Wyoming's state fossil. Other types of fish fossils that are often found at the Green River Formation are Diplomystus, Priscacara, Mioplosus, and Phareodus.
Most of the fish fossils unearthed at Green River are removed from two main sedimentary layers; one layer is referred to as the 18 inch layer and the other is known as the split fish layer.
Other types of fossils are often found at the Green River Formation; fish may be the main attraction, but other types of life forms are unearthed there all the time. Sycamore leaves, river reeds, and wood specimens have been found there, as have stromalites, reptiles, mammals, and primates. The oldest recovered flying mammal fossil was unearthed at Green River; the Icaronycteris index was a bat that was recovered in full, complete with wing membranes and cartilage. Although quite rare, crocodiles are occasionally found as well..
Fish fossils may be the main draw for fossil hunters who dig in the Green River Formation, but an extraordinary horse fossil was recently unearthed at Green River by a fossil quarry master. This Protorohippus venticolum fossil is one of the oldest and most complete fossil specimens of its type; its finder estimates that the fossil is 95 to 97% complete. This rare fossil was also found and preserved in its extremely rare fully natural articulation. The fossil has also been professionally authenticated by top paleontologists. More info on the horse. This amazing fossil can be purchased for $2.25 million; and has been verified by professionals and is already prepared for display as a wall sculpture. Four fossilized fish have also been captured in this formation, making this rare Protorohippus venticolum a truly one-of –a-kind piece for serious horse lovers.
This extraordinary Protorohippus venticolum fossil as well as fish and leaf fossils are for sale by the Touchstone Gallery of Arizona and New Mexico. Customers interested in procuring fish fossils or other fossil types from the Green River Formation should visit the store locations in Sedona, Scottsdale, Taos, or Santa Fe or contact the gallery online. Visit touchstone online. Sting rays, fish, and palm leaves from the Green River Formation are waiting to be purchased from Touchstone Gallery by fossil collectors.