1.5" Triassic Fossil Ammonite (Juvenites) - Nevada

This is a 1.5" fossil ammonite (Juvenites thurmarum) from the Thaynes Limestone in Elko County, Nevada.

This ammonite fossil is part of a old collection of ammonite fossils we recently acquired.

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. True ammonites appeared in the fossil record about 240 million years ago. 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
Juvenites thurmarum
LOCATION
Elko County, Nevada
FORMATION
Thaynes Limestone
SIZE
1.5"
CATEGORY
ITEM
#162624
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