This 50 million year old, Eocene-Era fossil fish comes from one
of the world's famous Laggerstatten, the Green River Formation in
Wyoming. A small portion of the fish fossils from Green River exhibits
such fine preservation. The significant extent of soft-tissue preservation
that makes the site famous is evident in this specimen.
Priscacara is perhaps the most popular of the Green River fish fossils.
A member of the Family Priscacaridae, the name Priscacara means
"primitive head". Shaped rather like a sunfish, the genus
sports sturdy, protective dorsal and anal spines. Among the two
species, liops and serrata, serrata is the more uncommon. The species
name comes from the diagnostic serrated preopercle. Liops is the
smaller species, never exceeding 150 mm, whereas serrata have been
found up to 375 mm. The genus went extinct at the end of the Miocene,
and is thought by some to be related to the modern-day Cichildae.
time went into the preparation of this specimen, with the dorsal
and anal spines presented in high relief, much like a fine sculpture,
making this a truly stunning display piece