NATICONEMA niagarensis Rochester Shale Gastropod


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NATICONEMA is a marine gastropod or snail. These snails are extinct though they resemble modern snails. They are often found in many marine deposits around the world.

The Rochester Shale is a wonderful exposure of Silurian rocks of Caleb’s quarry in Middleport New York.

This gastropod still has some matrix on it and it is .92 inches long and .97 inches wide.

This specimen comes in a handsome 3 inch by 4 inch black collectors box.

NACTONEMA niagrensis
Silurian Period
Rochester Shale
Caleb’s Quarry
Middleport, New York