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Eocene Nautilus Aturia Completely Replaced With Agate


Kosmoceras

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Wonders and wonders and wonders !!! :wub: !!! :drool: !!!

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How'd YOU know------

"I wonder" what this agate replaced form is?

It's from the agate aturia locale.

Over the years I just can't figger?????

Y'all like puzzles, got any ideas? It is a complete one BTW.

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post-9950-0-17119100-1372883950_thumb.jpg

Edited by PRK
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...Y'all like puzzles, got any ideas? It is a complete one BTW.

Puzzler...

I can just make out something like parallel 'growth lines':

post-423-0-25161200-1372885116_thumb.jpg

Some kind of cover or lid???

"There has been an alarming increase in the number of things I know nothing about." - Ashleigh Ellwood Brilliant

“Try to learn something about everything and everything about something.” - Thomas Henry Huxley

>Paleontology is an evolving science.

>May your wonders never cease!

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Ya mean like flintstone mayonnaise, or peanut butter? I think not, it's organic

and yes, I saw those. But???

Edited by PRK
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Dunno; totally speculating here...

Some kind of lid or cover, similar to an aptychus in function???

"There has been an alarming increase in the number of things I know nothing about." - Ashleigh Ellwood Brilliant

“Try to learn something about everything and everything about something.” - Thomas Henry Huxley

>Paleontology is an evolving science.

>May your wonders never cease!

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How'd YOU know------

"I wonder" what this agate replaced form is?

It's from the agate aturia locale.

Over the years I just can't figger?????

Y'all like puzzles, got any ideas? It is a complete one BTW.

This is interesting. Do you have pictures from other angles to show us?

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Sure--- what would you like?

Side & back would help.

"There has been an alarming increase in the number of things I know nothing about." - Ashleigh Ellwood Brilliant

“Try to learn something about everything and everything about something.” - Thomas Henry Huxley

>Paleontology is an evolving science.

>May your wonders never cease!

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Firstly let me say I've seen a goodly number of clam casts where the hollow that was left by the dissolved shell and had not been completely filled.(only up to a certain level), indicating a "water level" of agate. I have no idea if this is the case here or not. Possibly they were two complete cones base to base, but only partially filled with agate?

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The only idea I could come up with for this shape of two cones together would be two fish vertebrae close together and agate filled the void space between them. Tuna vertebrae have a deep concave surface that is roughly this shape and could be this size.

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This is a lot more 3-dimensional than I first thought; my earlier conjecture is voided.

"There has been an alarming increase in the number of things I know nothing about." - Ashleigh Ellwood Brilliant

“Try to learn something about everything and everything about something.” - Thomas Henry Huxley

>Paleontology is an evolving science.

>May your wonders never cease!

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Hi al dente---same here. I have collected this area for sometime and odd as it may be, I have found/seen absolutely no indications of any - vert material at this locality, along with the "cones" being so elongate, gives me pause for this I'd.

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  • 3 months later...

Here is an interesting piece of agatized wood from the Aturia creek. They also have a hollow interior filled with lovely drusy quartz lining

post-9950-0-26315100-1382419635_thumb.jpg

Edited by PRK
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Very nice!

"Absence of evidence is not evidence of absence"_ Carl Sagen

No trees were killed in this posting......however, many innocent electrons were diverted from where they originally intended to go.

" I think, therefore I collect fossils." _ Me

"When you have eliminated the impossible, whatever remains, however improbable, must be the truth."__S. Holmes

"can't we all just get along?" Jack Nicholson from Mars Attacks

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  • 1 month later...
  • 1 month later...
  • 1 year later...

I was quite disappointed when this aturia broke in half. Until I noticed the small but perfect crystals growing within one of the hollow chambers

Probably calcite?

post-9950-0-10415100-1446185055_thumb.jpg

Edited by PRK
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I was quite disappointed when this aturia broke in half. Until I noticed the small but perfect crystals growing within one of the hollow chambers

Probably calcite?

Could be, but I would have guessed the beigish mineral was calcite, or is it aragonite and the white xls are calcite (or qtz)? I dunno..

Can we see the broken piece put back in place?

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