.7" Ammonite (Promicroceras) Fossil - Lyme Regis

This is a very beautiful Promicroceras planicosta ammonite fossil which has been replaced with a golden calcite, collected from the Lyme Regis region of England. It's almost translucent and has been nicely prepared so that it displays very well on the limestone slab. It comes with an acrylic display stand.

Ammonites were predatory cephalopod mollusks that resembled squids with spiral shells. They are more closely related to living octopuses, though their shells resemble that of nautilus species. True ammonites appeared in the fossil record about 240 million years ago during the Triassic Period. 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
Ammonite .7" wide, Rock 3.3 x 2.6"
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