Giant, 23" Ammonite Fossil Cluster From Madagascar

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This is a cluster of large, polished ammonite fossils still embedded in the rock in which they were found. The largest ammonite measures 13" wide. Many other fossils including clams and gastropods can also be seen in the rock. The ammonites are Cretaceous (Albian Stage) in age or approximately 110 million years old and are quarried in the Mahajanga Province of Madagascar. The entire piece is 23" wide, 16.5" tall, and the base has been cut flat so that it displays well on a hard surface. This is a heavy piece weighing approximately 130 lbs.

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
Cleoniceras sp.
LOCATION
Ambatolafia, Mahajanga Province, Madagascar
SIZE
23" Wide, 16.5" Tall, 8" Deep
ITEM
#59728
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