12.25x16.5x1" deep, superb specimen contains the complete fossilized remains of 12.75" long Asterotrygon maloneyi stingray. Asterotrygon is an extinct genus of stingray from the Eocene Green River Formation in Wyoming. Several complete skeletons representing juveniles, adults, males and females have been uncovered from the Lower Eocene (55 million years old) deposits. A. maloneyi, was named in 2004 on the basis of these fossils. During the Eocene, large inland seas covered much of what is now the Western United States. The fish fossils from the Green River Formation are considered the best preserved fish fossils ever found. Amongst the most sought-after of these specimens is the stingray, its fragile "wing" bones making it a particularly tricky prize for the fossil hunter to excavate. The example we are offering is wonderfully preserved, w/individual vertebrae in the tail (as opposed to cartilage as in other stingrays of the era) present as well as the well-defined barbed tail stingers and the thin, delicate bones radiating from the main body. Although Asterotrygon is not the earliest stingray (they were present as early as the Early Cretaceous, it is one of the most well-preserved of the early forms. Most earlier stingrays are known only from small teeth, dermal denticles, or stingers, not entire bodies. A superbly prepared example of a highly rare fossil. From the Robert M. Overstreet Collection and comes with COA.