The Trimerus delphinocephalus (Green, 1832) trilobite of the Silurian Period. This first image is from a 1910 book. The picture is to giv...

This squid fossil found in Germany lived in the late Jurassic Period (145-140 million years ago).  The prominent cephalopod in the Mesozo...

Parkinsonia dorsetensis ammonite fossil found in England.  The creature lived in middle Jurassic Period (174-164 million years ago).  Spe...