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8" Ammonite (Placenticeras) Fossil - Eastern Montana
This is a 8" fossil ammonite (Placenticeras meeki) from the Bearpaw Shale in Eastern, Montana. It has been polished to a glossy finish on one side, with the opposite side left in its natural state. The ammonite underwent some crushing within the ground.
Includes an acrylic-metal display stand.
Includes an acrylic-metal 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.
SPECIES
Placenticeras meeki
LOCATION
Eastern Montana
FORMATION
Bearpaw Shale
SIZE
8" wide
CATEGORY
ITEM
#242363
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