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These Lower Cretaceous ammonites are quarried commercially in Madagascar
Marshosaurus bicentesimus with Allosaurus sp
providing evidence for the presence of the genus outside of North America
The antorbital fenestra was relatively short
with males possessing claspers
Eocene Green River Unidentified Leaf P-PCM-16-038 Dinosaur teeth These Lower Cretaceous ammonites areUnidentified Leaf Green River Formation Middle Eocene Lincoln County, Wyoming This is a very curious fossil leaf from the 18 inch layer. Careful examination reveals anastomose venation that is similar to Acrostichum hesperium (Newberry) but the leaf shape is not consistent with comparable specimens in literature or other collections. The leaf is large (9 cm) with a smooth margin.
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