A 50-million year old fossil Herring from the Green River Formation of Wyoming. The species is Knightia eocaena, and it was collected near Kemmerer, Wyoming. Knightia is an extinct genus of schooling, ray-finned, spindle-shaped, bony fish that shares a family with herrings and sardines. They lived in the freshwater (lacustrine)...

A 50-million year old fossil Herring from the Green River Formation of Wyoming. The species is Knightia eocaena, and it was collected near Kemmerer, Wyoming. Knightia is an extinct genus of schooling, ray-finned, spindle-shaped, bony fish that shares a family with herrings and sardines. They lived in the freshwater (lacustrine)...

A 50-million year old fossil Herring from the Green River Formation of Wyoming. The species is Knightia eocaena, and it was collected near Kemmerer, Wyoming. Knightia is an extinct genus of schooling, ray-finned, spindle-shaped, bony fish that shares a family with herrings and sardines. They lived in the freshwater (lacustrine)...

A 50-million year old fossil Herring from the Green River Formation of Wyoming. The species is Knightia eocaena, and it was collected near Kemmerer, Wyoming. Knightia is an extinct genus of schooling, ray-finned, spindle-shaped, bony fish that shares a family with herrings and sardines. They lived in the freshwater (lacustrine)...

A 50-million year old fossil Herring from the Green River Formation of Wyoming. The species is Knightia eocaena, and it was collected near Kemmerer, Wyoming. Knightia is an extinct genus of schooling, ray-finned, spindle-shaped, bony fish that shares a family with herrings and sardines. They lived in the freshwater (lacustrine)...

A 50-million year old fossil Herring from the Green River Formation of Wyoming. The species is Knightia eocaena, and it was collected near Kemmerer, Wyoming. Knightia is an extinct genus of schooling, ray-finned, spindle-shaped, bony fish that shares a family with herrings and sardines. They lived in the freshwater (lacustrine)...

A 50-million year old fossil Herring from the Green River Formation of Wyoming. The species is Knightia eocaena, and it was collected near Kemmerer, Wyoming. Knightia is an extinct genus of schooling, ray-finned, spindle-shaped, bony fish that shares a family with herrings and sardines. They lived in the freshwater (lacustrine)...

A 50-million year old fossil Herring from the Green River Formation of Wyoming. The species is Knightia eocaena, and it was collected near Kemmerer, Wyoming. Knightia is an extinct genus of schooling, ray-finned, spindle-shaped, bony fish that shares a family with herrings and sardines. They lived in the freshwater (lacustrine)...

A 50-million year old fossil Herring from the Green River Formation of Wyoming. The species is Knightia eocaena, and it was collected near Kemmerer, Wyoming. Knightia is an extinct genus of schooling, ray-finned, spindle-shaped, bony fish that shares a family with herrings and sardines. They lived in the freshwater (lacustrine)...

A 50-million year old fossil Herring from the Green River Formation of Wyoming. The species is Knightia eocaena, and it was collected near Kemmerer, Wyoming. Knightia is an extinct genus of schooling, ray-finned, spindle-shaped, bony fish that shares a family with herrings and sardines. They lived in the freshwater (lacustrine)...

A 50-million year old fossil Herring from the Green River Formation of Wyoming. The species is Knightia eocaena, and it was collected near Kemmerer, Wyoming. Knightia is an extinct genus of schooling, ray-finned, spindle-shaped, bony fish that shares a family with herrings and sardines. They lived in the freshwater (lacustrine)...

A 50-million year old fossil Herring from the Green River Formation of Wyoming. The species is Knightia eocaena, and it was collected near Kemmerer, Wyoming. Knightia is an extinct genus of schooling, ray-finned, spindle-shaped, bony fish that shares a family with herrings and sardines. They lived in the freshwater (lacustrine)...

A 50-million year old fossil Herring from the Green River Formation of Wyoming. The species is Knightia eocaena, and it was collected near Kemmerer, Wyoming. Knightia is an extinct genus of schooling, ray-finned, spindle-shaped, bony fish that shares a family with herrings and sardines. They lived in the freshwater (lacustrine)...

A 50-million year old fossil Herring from the Green River Formation of Wyoming. The species is Knightia eocaena, and it was collected near Kemmerer, Wyoming. Knightia is an extinct genus of schooling, ray-finned, spindle-shaped, bony fish that shares a family with herrings and sardines. They lived in the freshwater (lacustrine)...

A 50-million year old fossil Herring from the Green River Formation of Wyoming. The species is Knightia eocaena, and it was collected near Kemmerer, Wyoming. Knightia is an extinct genus of schooling, ray-finned, spindle-shaped, bony fish that shares a family with herrings and sardines. They lived in the freshwater (lacustrine)...

A 50-million year old fossil Herring from the Green River Formation of Wyoming. The species is Knightia eocaena, and it was collected near Kemmerer, Wyoming. Knightia is an extinct genus of schooling, ray-finned, spindle-shaped, bony fish that shares a family with herrings and sardines. They lived in the freshwater (lacustrine)...

A 50-million year old fossil Herring from the Green River Formation of Wyoming. The species is Knightia eocaena, and it was collected near Kemmerer, Wyoming. Knightia is an extinct genus of schooling, ray-finned, spindle-shaped, bony fish that shares a family with herrings and sardines. They lived in the freshwater (lacustrine)...

A 50-million year old fossil Herring from the Green River Formation of Wyoming. The species is Knightia eocaena, and it was collected near Kemmerer, Wyoming. Knightia is an extinct genus of schooling, ray-finned, spindle-shaped, bony fish that shares a family with herrings and sardines. They lived in the freshwater (lacustrine)...

A 50-million year old fossil Herring from the Green River Formation of Wyoming. The species is Knightia eocaena, and it was collected near Kemmerer, Wyoming. Knightia is an extinct genus of schooling, ray-finned, spindle-shaped, bony fish that shares a family with herrings and sardines. They lived in the freshwater (lacustrine)...

A 50-million year old fossil Herring from the Green River Formation of Wyoming. The species is Knightia eocaena, and it was collected near Kemmerer, Wyoming. Knightia is an extinct genus of schooling, ray-finned, spindle-shaped, bony fish that shares a family with herrings and sardines. They lived in the freshwater (lacustrine)...

A 50-million year old fossil Herring from the Green River Formation of Wyoming. The species is Knightia eocaena, and it was collected near Kemmerer, Wyoming. Knightia is an extinct genus of schooling, ray-finned, spindle-shaped, bony fish that shares a family with herrings and sardines. They lived in the freshwater (lacustrine)...

A 50-million year old fossil Herring from the Green River Formation of Wyoming. The species is Knightia eocaena, and it was collected near Kemmerer, Wyoming. Knightia is an extinct genus of schooling, ray-finned, spindle-shaped, bony fish that shares a family with herrings and sardines. They lived in the freshwater (lacustrine)...

A 50-million year old fossil Herring from the Green River Formation of Wyoming. The species is Knightia eocaena, and it was collected near Kemmerer, Wyoming. Knightia is an extinct genus of schooling, ray-finned, spindle-shaped, bony fish that shares a family with herrings and sardines. They lived in the freshwater (lacustrine)...

A 50-million year old fossil Herring from the Green River Formation of Wyoming. The species is Knightia eocaena, and it was collected near Kemmerer, Wyoming. Knightia is an extinct genus of schooling, ray-finned, spindle-shaped, bony fish that shares a family with herrings and sardines. They lived in the freshwater (lacustrine)...

A 50-million year old fossil Herring from the Green River Formation of Wyoming. The species is Knightia eocaena, and it was collected near Kemmerer, Wyoming. Knightia is an extinct genus of schooling, ray-finned, spindle-shaped, bony fish that shares a family with herrings and sardines. They lived in the freshwater (lacustrine)...

Genuine Knightia Fossil Fish in a Glass Display Box. This specimen comes in a labeled display box with color image and a brief written description. These make amazing gifts as they come perfectly displayed and labeled. Here's a 50 million year old fossil herring from the Green River Formation of Wyoming....

A 50-million year old fossil Herring from the Green River Formation of Wyoming. The species is Knightia eocaena, and it was collected near Kemmerer, Wyoming. Knightia is an extinct genus of schooling, ray-finned, spindle-shaped, bony fish that shares a family with herrings and sardines. They lived in the freshwater (lacustrine)...

A 50-million year old fossil Herring from the Green River Formation of Wyoming. The species is Knightia eocaena, and it was collected near Kemmerer, Wyoming. Knightia is an extinct genus of schooling, ray-finned, spindle-shaped, bony fish that shares a family with herrings and sardines. They lived in the freshwater (lacustrine)...

A 50-million year old fossil Herring from the Green River Formation of Wyoming. The species is Knightia eocaena, and it was collected near Kemmerer, Wyoming. Knightia is an extinct genus of schooling, ray-finned, spindle-shaped, bony fish that shares a family with herrings and sardines. They lived in the freshwater (lacustrine)...

A 50-million year old fossil Herring from the Green River Formation of Wyoming. The species is Knightia eocaena, and it was collected near Kemmerer, Wyoming. Knightia is an extinct genus of schooling, ray-finned, spindle-shaped, bony fish that shares a family with herrings and sardines. They lived in the freshwater (lacustrine)...

A 50-million year old fossil Herring from the Green River Formation of Wyoming. The species is Knightia eocaena, and it was collected near Kemmerer, Wyoming. Knightia is an extinct genus of schooling, ray-finned, spindle-shaped, bony fish that shares a family with herrings and sardines. They lived in the freshwater (lacustrine)...

A 50-million year old fossil Herring from the Green River Formation of Wyoming. The species is Knightia eocaena, and it was collected near Kemmerer, Wyoming. Knightia is an extinct genus of schooling, ray-finned, spindle-shaped, bony fish that shares a family with herrings and sardines. They lived in the freshwater (lacustrine)...

A 50-million year old fossil Herring from the Green River Formation of Wyoming. The species is Knightia eocaena, and it was collected near Kemmerer, Wyoming. Knightia is an extinct genus of schooling, ray-finned, spindle-shaped, bony fish that shares a family with herrings and sardines. They lived in the freshwater (lacustrine)...

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 as this. This Diplomystus dentatus fossil displays 16 fish scattered across a large plate...