[News] Did trilobites hide from nautiloids?

Architeuthoceras

Architeuthis
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Nautiloid thoughts:
  • Trilobite dinner
  • How do I get into that tunnel
  • Why dont trilobites just stay on the surface
Trilobite thoughts:
  • Ha ha, cant get me now
  • Where is that big worm that really lives in here?

Food for thought
thoughts of food
thoughts of being food
 

Tornoceras

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How about: "Did trilobites hide from nautiloids inside of nautiloids?"

Here are photos of a Devonian fossil I found last summer - a trilobite inside an orthocone nautiloid. Apparently the association is known; it's thought that the trilobites hid inside to molt.
Internal mold of Michelinoceras? with trilobite Eldredgeops (Phacops). The length of the nautiloid fossil is 190mm.
 

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ob;77399 said:
Think giant bristleworms (rekindling nightmares), think Permian extinction...

I have a coral book that contains a photograph of a giant bristleworm species removed from a persons reef tank. It was 5 feet long... looked like a giant centipede. I can see one of those making dinner out of a trilobite. Shoot... I can see one of those making dinner out of a nautilus. Nightmare material for sure. I wouldn't be hiding in it's hole!
 

Architeuthoceras

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Thanks for posting that picture Tornoceras.

It had me totally freaked out for a while... how could a trilobite get inside the phragmocone of a nautiloid? The same way the sediment that is filling the chambers did, the shell and/or the septa were broken so the trilobite could climb in and hide or molt, then the sediment filled the shell trapping the trilobite or its molt inside the shell. A very nice find, telling a cool story. :cool2:
 

DWhatley

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Mote had a bristleworm display (living) that contained critters I would not want to find growing in my tank (they were at least an inch wide).
 

monty

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didn't Mote also have an exhibit of "fireworms" or something like that which had some nasty sting? I've only SCUBA'ed in the Pacific, but I flagged those as something to learn to recognize if I dive in the Atlantic (particularly considering my propensity to flip over rocks to find the interesting invertebrates) yup, google confirms they are a type of bristleworm: http://marinebio.org/species.asp?id=292 :goofysca:
 
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