3" Ammonite (Asteroceras) With Petrified Wood - Dorset, England

This is a beautifully prepared, 3" wide Asteroceras obtusum ammonite fossil from the Lyme Regis region of England. The ammonite has been prepped mostly free from the rock. Much of the shell is preserved as a translucent, yellow calcite. There is a small piece of what appears to be petrified wood preserved alongside the ammonite. The base of the rock has been cut flat for presentation purposes.

This specimen was collected and prepped by Pete Langham in 1999-2000.

Ammonites were predatory mollusks that resembled a squid with a shell. These cephalopods had eyes, tentacles, and spiral shells. They are more closely related to a living octopus, though the shells resemble that of a nautilus. Ammonites appeared in the fossil record about 240 million years. The last lineages disappeared 65 million years ago at the end of the Cretaceous.

Asteroceras obtusum
Black Ven, Charmouth, Lyme Regis, Dorset, England
Lower Lias, Obtusum Zone
Ammonite 3" wide. Entire specimen 8.3 x 7.1"
We guarantee the authenticity of all of our
specimens. Read more about our
Authenticity Guarantee.