This Specimen has been sold.
1 3/4 Inch Perisphinctes Ammonite - Jurassic
This is a classic Late Jurassic ammonite fossil from Madagascar. It's in nice shape and still has much of the white shell remaining unlike many that are just preserved as internal casts.
Ammonites were predatory mollusks that resembled squids with shells. These cephalopods had eyes, tentacles, and spiral shells. Though their shells resemble that of a nautilus, they are actually more closely related to living octopuses. Ammonites appeared in the fossil record about 240 million years ago, barely surviving several major extinction events. The last lineages disappeared 65 million years ago at the end of the Cretaceous.
SPECIES
Perisphinctes
LOCATION
Near Sakaraha, Madagascar
FORMATION
N/A
SIZE
1.8" wide
CATEGORY
SUB CATEGORY
ITEM
#1960
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