My trip earlier this month to Alpena, Michigan USA with several amateur paleontologists from Louisville and Chicago, we visited a local paleontologist Paleo Joe (aka Joseph Kchodl). This picture is of one of his fish fossils from Kemmerer, Wyoming USA. This fossil is known as Phareodus testis (Cope, 1877). It was found in the Green River Formation and existed in the Eocene Epoch Paleogene Period.
