mystery fossil from NNY

[emmag15]

I was looking through some old family videos and I stumbled across this one with a pretty cool fossil— my family and I were never able to figure out what it was. It was about a foot long (that was my small hand in the first photo— for scale.) Any insights are greatly appreciated!!

[emmag15]

Here’s another photo—

[DPS Ammonite]

It is an orthoconic (straight) cephalopod.

[PaleoNoel]

A cross section of a orthocone- a straight shelled nautiloid. 

Cool fossil!

[emmag15]

Here’s another one— it’s a pretty interesting one, in my opinion. Found in the same area. The picture is pretty bad, but any help is greatly appreciated!!

[emmag15]

Another fossil found in the same area. Thanks again!

[PaleoNoel]

They look like coiled nautiloids to me.

[TqB]

I agree with nautiloids, perhaps just curved rather than coiled.

[emmag15]

Alright, here are two more photos. I apologize for the awful quality, these are from cassette tape videos from a little over ten years ago...  I’d assume that these are both nautiloids as well? In the second picture the thing I’m most curious about is the circular/oval outlines... would they be cross sections of smaller nautiloids?

[Mark Kmiecik]

First one of the two additional photos looks the cross-section of a gastropod (snail-like shell), and the second is an orthocone nautiloid (the long thing in the middle) surrounded by cross-sections of various gastropods and bivalves and possibly nautiloids. Not enough detail to be really sure.