Miocene Ironwood Plant Fossil

Lyonothamnus parvifolius (Ironwood)

Division Magnoliophyta, Class Magnoliopsida, Order Fabales, Family Mimosoideae

Geological Time: Miocene, 16 million years ago

Size: Fossil frond is 57 mm in length by 68 mm in width on a 16 x 9 cm plate

Fossil Site: Central Nevada

Fossil Code: PFP152

Price: Sold

Description: Central Nevada has a host of Miocene fossil leaf sites. The leaves from this one are preserved in paper shales and exhibit the best plant preservation I have ever encountered. Some of these shales are incredibly fragile, nearly as thin as a sheet of paper.

The state once had a much wetter and more temperate climate back in the Miocene. There were many more lakes in what is now the driest state in the USA. The Sierra uplift dramatically changed the climate and rainfall in the state.

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