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JulianoLPD

Real reminiscent of siphuncle?

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JulianoLPD

Hy guys,
So I got this nautiloid in a wholesale and when I got home I realized this kind of small "hole" in the inner part of the shell.

My doubt is if this is reminiscent of the siphuncle or it was made by someone.
What do you think?

IMG_20190712_233859.jpg

IMG_20190712_233842.jpg

IMG_20190712_233857.jpg

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Randyw

When you blow up the picture it does not appear drilled. It appears to me to be organic in origin. Cracks shapes etc all flow smoothly into it. 

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JulianoLPD
3 minutes ago, Randyw said:

When you blow up the picture it does not appear drilled. It appears to me to be organic in origin. Cracks shapes etc all flow smoothly into it. 

So would it be the siphuncle?

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Randyw

I’m not an expert mind you but it’s in the right place, looks like one, appears organic... if it was mine I’d be labeling it as one.....

 

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BobWill

Definitely a siphuncle. What Randy said plus it would be unworthy of the effort to reproduce artificially. I like specimens like this showing sutures, a chamber wall and the siphuncle. They are good for explaining how they achieve buoyancy to people who don't know. You would just need to add that the body chamber is missing and show where it would have been.

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JulianoLPD

Thank you, guys!
I'm pretty happy with this piece now.
Would it be a Cenoceras?

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Randyw

It does remind me of a cenocerus...

heres a photo off the web of one for you to compare with...

58AB4869-8746-493C-97E0-56A3B28989A6.jpeg

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Pemphix
On ‎13‎.‎07‎.‎2019 at 5:30 AM, JulianoLPD said:

So would it be the siphuncle?

Yes.

On ‎13‎.‎07‎.‎2019 at 6:24 AM, JulianoLPD said:

Would it be a Cenoceras?

Probably. Looks similar to those heavy polished Cenoceras coming from Madagaskar, see here for example: https://en.wikipedia.org/wiki/Cenoceras

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