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Nautiloid?


mariont

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Hello, this was found in Manitoba. It is about 4"long and 4" in diameter. This piece had weathered out and there was at least another 4 - 6" encased in stone. The interior has crystallized. Is it a straight nautiloid?

Any assistance would be appreciated.

Thanks!post-17690-0-79004600-1425317256_thumb.jpgpost-17690-0-99896000-1425317269_thumb.jpgpost-17690-0-30864200-1425317288_thumb.jpg

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Maybe a great big re-crystallized horn coral?

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I think is a re-crystallized coral part from a coral colony.

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It's a corallite, a single organism of a coral, the colony. Anyway it's a really nice piece! (maybe a fasciculated coral?)

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Hello, this was found in Manitoba. It is about 4"long and 4" in diameter. This piece had weathered out and there was at least another 4 - 6" encased in stone. The interior has crystallized. Is it a straight nautiloid?

Any assistance would be appreciated.

Thanks!attachicon.gifPhoto 1.jpgattachicon.gifPhoto 2.jpgattachicon.gifPhoto 3.jpg

No Nautilus

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Can you be any more specific than just "Manitoba" for the locality? There is a lot of Ordovician (Winnipeg, Red River, Stoney Mountain, and part of the Stonewall formations), plus several Silurian and Devonian formations in the Interlake area. All those formations are exposed at places along the shore and islands in Lake Winnipeg and Winnipegosis. The style of preservation reminds me of some of the upper members of the Stoney Mountain, the Stonewall, and some of the Silurian Interlake Group formations. A more specific locality could help narrow down the age. I know of a couple of Silurian corals that look a bit like that, but they are much smaller (the corallites are only 2-4 mm across).

Don

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