2.7" Hoploscaphites Brevis Ammonite - South Dakota

This is a beautiful Hoploscaphites brevis from the Pierre Shale of South Dakota. It was found inside of a hard concretion and the rock had to be meticulously prepared away.



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. Ammonites appeared in the fossil record about 240 million years ago and they barely survived several major extinction events. The last lineages disappeared 65 million years ago at the end of the Cretaceous.

FOR SALE
$23
DETAILS
SPECIES
Hoploscaphites brevis
LOCATION
Meade County, South Dakota
FORMATION
Pierre Shale
SIZE
2.7" Wide
ITEM
#43938
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