Fossil Ammonites (Promicroceras) Plate- Lyme Regis

This is a very beautifully agatized, Promicroceras planicosta ammonite fossil plate, collected from Lyme Regis, England. They are almost translucent and have been nicely prepared to display very well on the limestone slab. This plate contains the positive fossil or negative impression of at least 6 ammonites on the front and an additional one on the reverse side. This is an amazing specimen.

Comes with an acrylic stand.

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. True ammonites appeared in the fossil record about 240 million years ago. The last lineages disappeared 65 million years ago at the end of the Cretaceous.

What an ammonite would have looked like while alive.
What an ammonite would have looked like while alive.
Promicroceras planicosta
Lyme Regis, Dorset, England
Lower Lias, Obtusum Zone
.8" largest , 5.1 x 4.1" rock
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