Two Fossil Ammonites (Promicroceras) - Lyme Regis

This is 2 very beautifully agatized, Promicroceras planicosta ammonite fossils, collected from Lyme Regis, England. One is almost translucent and the other is the negative impression. Both have been nicely prepared so that they displays very well on the limestone slab.

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

DETAILS
SPECIES
Promicroceras planicosta
LOCATION
Lyme Regis, Dorset, England
FORMATION
Lower Lias, Obtusum Zone
SIZE
.8" positive , .7" negative, 4.9 x 4.8" rock
ITEM
#110693
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