PERCH

54-37 million years

Period: Eocene
Location: Green River Formation, Wyoming, USA

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Among the millions of fossils discovered to date, there exists not one single ""intermediate form"" in the form of a half herring/half swordfish, half shark/half salmon. Fossils reveal that herrings have always been herrings, salmons have always been salmons, and sharks have always been sharks. The perch, which has been the same for 54-37 million years, also verifies this.

Detailed Pictures

Living Example

SF0215