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I_gotta_rock

Devonian Cephalopod

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I_gotta_rock

I found this yesterday in Avoca, New York. It's about 3 cm long. The core looks like a cephalopod of some kind, but the exterior has me puzzled. If it were soft tissue, it wouldn't have preserved, but I have found impressions of a few others like this there and in another site over an hour away. The one field guide I have shows nothing like it and I may have to go hunt down the original 19th century sources.  Any clues? 

cephalopod1-sm.thumb.jpg.655a1db4ed00676b685d2e1ccc845dd9.jpg

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Rockwood
17 minutes ago, I_gotta_rock said:

The core looks like a cephalopod of some kind, but the exterior has me puzzled.

The septa are only visible on the inside of the shell. This a typical, all be it crushed shell.

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