This fossil was displayed on August 2022, at the Harvard Museum of Natural History
in Cambridge, Massachusetts, USA. This fish fossil is called
Dapedoglosus testis (Cope, 1887) along with a small
Priscacara. This specimen was found in the Green River Formation at Kemmerer Wyoming USA. It
dates to the Eocene Epoch (48 million years ago), Paleogene Period.
https://mczbase.mcz.harvard.edu/guid/MCZ:VP:VPF-13863