Knightia Alta Fossil, Natural Prehistoric From Kemmerer Wyoming.
Knightia Alta Fossil, Natural Prehistoric From Kemmerer Wyoming, Preservation Treatment.
This is a well-preserved example of a 50 million-year-old fossil Knightia Alta from the Green River Formation of Wyoming. You can clearly see the well-defined details such as the backbone, scales and fins. It contrasts well against the creme coloured limestone matrix that is centred on.
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) environments of North America and were eaten by just about everything that was bigger. They ate insects and smaller fish and used gill rakers to feast on plankton.
Item Code - FOS11D1501WARZ1
Width: 5 3/16" Height: 2 1/4" Depth: 1/2" Weight: 165 g
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