Two Ammonite (Hammatoceras) Fossils - Belmont, France

This is an association of two fossil ammonites of the genus Hammatoceras that was collected near Belmont, France. They are Toarcian (Jurassic period) in age, or approximately 180 million years old. The larger ammonite is 5.3" wide and the smaller is 3.7" wide. The ammonites have been partially exposed from the rock they were found in, with one edge cut flat for presentation purposes.

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.
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DETAILS
SPECIES
Hammatoceras sp.
LOCATION
Belmont, France
SIZE
Largest Ammonite: 5.3" wide, Entire specimen: 7.2 x 5.9"
CATEGORY
SUB CATEGORY
ITEM
#191712
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