GARY HINCKS / SCIENCE PHOTO LIBRARY GARY HINCKS / SCIENCE PHOTO LIBRARY
Ammonite fossil, artwork. Ammonites are extinct marine invertebrates. They first appeared in the Late Silurian to Early Devonian period (around 400 million years ago) and became extinct at the end of the Cretaceous period (65 million years ago).
Model release not required. Property release not required.