Unknown Fossil-like Shell

[hermiwormi]

I mentioned recently that my crabs had all changed into turbos, except my teeny tiny crab, Siam(See•Ahm) He changed into one of the tiny shells that I said looked like a fossil. I've been calling them "ancient turbos" Haha Does anyone know what these shells are?
(My apologies for the bad pictures of Siam, it's hard to take pictures of a very fast crab)

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[AwesomeHermit]

Most crabs will not go in a shell like that, check the shell guide

[hermiwormi]

Most crabs will not go in a shell like that, check the shell guide

That's why I found it a bit strange that Siam went into it! He changed between three of the fossil-like shells and then switched back to the first one. He prefers these shells over the small turbos and murex shells in the crabitat

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[wodesorel]

It's a delphinium. It is extremely rare for a hermit to even try one on, because the inside does not allow for normal abdonminal spiraling! The shells are too skinny and too straight when compared to a normal seashell.

[hermiwormi]

It's a delphinium. It is extremely rare for a hermit to even try one on, because the inside does not allow for normal abdonminal spiraling! The shells are too skinny and too straight when compared to a normal seashell.

Thank you That's so strange. Should I be concerned about Siam in the shell, or not?

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[Hermiesguardian]

Is this one of those? This shell seems to be too heavy for him because he keeps falling backwards.

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[wodesorel]

Is this one of those? This shell seems to be too heavy for him because he keeps falling backwards.

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That is a silver mouth turbo, not the most popular because of the weight, but some smaller crabs still wear them!

[piratetoothgir]

I have a crab who wears a gold mouth turbo.
My shell shop only contains shells from the popular list, except for a few magpie pica.

[AwesomeHermit]

Is this one of those? This shell seems to be too heavy for him because he keeps falling backwards.

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That is a silver mouth turbo, not the most popular because of the weight, but some smaller crabs still wear them!

Oh, I wanna is thought they were Gold Mouth