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Is this a crab carapace?


sdsnl

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Found in Kenting, Taiwan. The surrounding rocks are an coral reef which, if I understand correctly, is from the Miocene. It is about 20 inches long and is very hard. The black parts seem to be burn marks.

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I don't really see any decapod texture or morphology. :unsure:

I wonder if the black isn't carbonization of something.

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I have to agree with Tim as far as it possibly being crab. But if it was holy moly. When i saw it, I thought of how a sting ray looks buried in the sand when you see it at night by light while flounder gigging. But again, it is not that either. I think a very cool geologic feature.

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Are you going to attempt to dig it out? If you do PLEASE post more pictures. That is the most eye popping, jaw dropping, crab looking thing! I hope it is, but if it isn't it's still a really nice looking piece. Let us know if you get a definite ID on it!

(My face when I saw that :blink:)

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I'm with you on the giant arthropod as far as appearances go and if turns out to be a pseudofossil its pretty convincing ... worth letting an expert take a look definitely. Dont think I'd like that one pinching my foot either.

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Thanks, I don't really know what to look for to identify a crab :P

Unfortunately that's the best picture I have and I have already left the country. I wish I had taken more pictures!

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There are two prominent bumps on the left side of the carapace, proving that this can't be a carapace. It's a geologic feature. I would view this upside down, and declare it to be a giant clam. =-)

  • I found this Informative 2
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I'm not familiar with the fossil fauna of the Kenting area, but reading this document I have a strong geological vibe on what could be the "crab carapace". Please take a look ! From convergent plate margin to arc-continent collision-Formation of the Kenting Mélange, southern Taiwan.compressed.pdf

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Edit : Meantime,tmaier concluded well.

Edited by abyssunder
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Anyway, plenty of fossils in the surrounding rocks.

Yes, i clearly see a coral at the up of the right side of the photo. I also see pieces of shells. Edited by fifbrindacier

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Thanks! The rock is like H in the photo.

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Anyway, plenty of fossils in the surrounding rocks.

Yes, i clearly see a coral at the up of the right side of the photo. I also see pieces of shells.

You have good eyes! Took some time for me to zoom in and find them :P

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