Fossil Graptolite

Here is the slingshot-like graptolite called Dicranograptus spinifer Elles and Wood, 22mm long, which has been naturally preserved with an unusual reddish coloration, presumably through replacement by the mineral limonite. Collected from the Middle Ordovician Vinini Formation near Graptolite Summit, Nevada.

Return To: Ordovician Fossils In The Toquima Range, Nevada