Legume-like flower ( Protomimosoidea buchananensis ) from the Eocene Epoch (Paleogene Period). Early flower that existed about 52 million...

Eospirifer radiatus Brachiopods shown are: Atrypa reticularis? , Eospirifer eudora , Eospirifer radiatus , Homoeospira evax , Laptaena...

Leaf mine fossil made by moth caterpillar ( Gracillariid sp. ) from the Cretaceous Period.  Fossil on display (2010) at Smithsonian Natio...