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Post by hummingbirdstones on Apr 1, 2023 10:37:47 GMT -5
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Post by jasoninsd on Apr 1, 2023 15:26:49 GMT -5
Did you post this just because the curator's name is Robin! LOL - J/K
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Post by hummingbirdstones on Apr 1, 2023 17:43:36 GMT -5
Did you post this just because the curator's name is Robin! LOL - J/K Of course I did! She's obviously a smart cookie.
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RWA3006
Cave Dweller
Member since March 2009
Posts: 4,175
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Post by RWA3006 on Apr 1, 2023 22:03:51 GMT -5
I've seen and collected many limb casts from the Blue Forest where their cross sections look just like that. Hollow centers that filled in with crystals and petrified algae coating the exterior of the limb. Also the concentric layers of chalcedony or opal just under the bark.
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RWA3006
Cave Dweller
Member since March 2009
Posts: 4,175
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Post by RWA3006 on Apr 1, 2023 22:07:05 GMT -5
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Post by drocknut on Apr 2, 2023 13:03:49 GMT -5
Weird and interesting.
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oldschoolrocker
fully equipped rock polisher
Member since January 2019
Posts: 1,540
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Post by oldschoolrocker on Apr 2, 2023 13:45:07 GMT -5
Im not convinced....would think there would need to be more than circumstantial evidence to make that conclusion...but hey- its round and has thin outer crust so must be dino egg lol.
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Post by hummingbirdstones on Apr 2, 2023 15:42:00 GMT -5
Im not convinced....would think there would need to be more than circumstantial evidence to make that conclusion...but hey- its round and has thin outer crust so must be dino egg lol. I'm not either. That's why I put a question mark at the end of the thread title. RWA3006's photos of limb casts look almost exactly like "egg".
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RWA3006
Cave Dweller
Member since March 2009
Posts: 4,175
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Post by RWA3006 on Apr 2, 2023 19:02:46 GMT -5
I got the impression that the provenance of the subject is undetermined or in question. If this is correct, then I'd conclude they are limb casts as a matter of default.
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Post by fernwood on Apr 3, 2023 4:02:37 GMT -5
I saw some photos elsewhere. Immediately thought limb cast.
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Post by hummingbirdstones on Apr 3, 2023 9:31:12 GMT -5
The article says it was registered in their minerology collection in 1883 and that it was colleected in central India.
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,154
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Post by jamesp on Apr 5, 2023 14:27:48 GMT -5
shame it wasn't sawn into 8 sections, in half one way and over 90 degrees to prove it a sphere or oval. Few limb casts are round/oval ! A petrified barrel cactus would fit the bill...
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Post by mohs on Apr 5, 2023 14:37:34 GMT -5
this one as a long ways to gohs what I find interesting about barrel cactus's is the seedlings seem to favor rock crevices I find many barrel's growing by rocks not sure if that by nature design? or just the lucky ones that fell & grew there because they don't get trampled or its a weather barrier type of thing? not sure,,,, mostly
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,154
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Post by jamesp on Apr 6, 2023 7:56:07 GMT -5
Love barrel cactus mohs. Looks like they could stick thru a boot. They look slow growing and look like they get very old. Speaking of big eggs, an ostrich egg requires a lot of force to break open. It's possible a dino egg would be a yet harder egg to crack. Has to be hard enough to go thru the silicification/fossil process. Animals and plants deal with the process.
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