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Post by RickB on Nov 27, 2022 7:18:18 GMT -5
The difference between roller and digger dung beetles. Shows a cross section of the burrows.
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RWA3006
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Post by RWA3006 on Nov 27, 2022 10:56:00 GMT -5
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RWA3006
Cave Dweller
Member since March 2009
Posts: 4,171
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Post by RWA3006 on Nov 29, 2022 10:46:33 GMT -5
YAY! IT'S TURD TUESDAY!!!
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RWA3006
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Member since March 2009
Posts: 4,171
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Post by RWA3006 on Dec 1, 2022 7:55:24 GMT -5
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Post by 1dave on Dec 1, 2022 9:35:23 GMT -5
Flaky
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RWA3006
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Member since March 2009
Posts: 4,171
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Post by RWA3006 on Dec 3, 2022 11:46:54 GMT -5
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RWA3006
Cave Dweller
Member since March 2009
Posts: 4,171
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Post by RWA3006 on Dec 5, 2022 22:05:37 GMT -5
Ladies and gentlemen, I'd like you to consider bidding on a medium flat rate box full of coprolite rough that I'm putting up for auction to help Stonemon with some medical expenses. All proceeds will go to him and I'll cover shipping expenses. I'm going to pick out over 20 pounds of the highest quality coprolite rough that should promise some excellent results, but of course you never know till you cut them open. Go to the link for details and thank you. Randy forum.rocktumblinghobby.com/thread/101025/benefit-auction-stonemon-coprolite
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RWA3006
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Member since March 2009
Posts: 4,171
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Post by RWA3006 on Dec 6, 2022 7:42:29 GMT -5
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RWA3006
Cave Dweller
Member since March 2009
Posts: 4,171
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Post by RWA3006 on Dec 6, 2022 20:37:15 GMT -5
Did you guys notice all the stuff going on in this last one? It looks like there was a void in the middle that started to fill in as evidenced by the chalcedony fortification lines, then it finished filling with calcite crystal. I also noticed the reddish plug of dung beetle poo that was left in the cavity that I suppose was made by a bug. A coprolite within a coprolite, as it were.
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RWA3006
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Member since March 2009
Posts: 4,171
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Post by RWA3006 on Dec 8, 2022 7:53:06 GMT -5
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Brian
fully equipped rock polisher
Member since July 2020
Posts: 1,506
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Post by Brian on Dec 8, 2022 9:58:10 GMT -5
That last one is a beauty!
The size of the ghost limb has me thinking again. Always a dangerous proposition, but here goes my thought.
The size of the ghost limbs relative to the overall size of the coprolites can be impressively large and I would imagine difficult to pass. Could it be that the original dropping was significantly larger than the fossilized coprolite? These dinos must have had strong digestive tracts to support their diets, but the size of some of the limbs seems very large to pass through.
On the other hand, the pelletized poops where the pellets are visible from the exterior would suggest that the final fossilized poop was pretty much unaltered from the original. But then you wouldn’t have those large limb ghosts in the small pellets. And the pelletized poo would suggest that the pellets may be harder (less water content) than the other types of poop. I’m thinking the difference between deer pellets and a cow patty on that one.
If the poops with limb ghosts are wetter than the pelletized poo, then it could stand to reason that the coprolite is not necessarily the same as the fresh dropping given the chance to erode or shrinkage due to drying.
Clearly spending way to much time pondering prehistoric poo…
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Post by mohs on Dec 8, 2022 10:02:49 GMT -5
what buttiful description of a dino dump Brian
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Post by rockjunquie on Dec 8, 2022 12:03:18 GMT -5
Did you guys notice all the stuff going on in this last one? It looks like there was a void in the middle that started to fill in as evidenced by the chalcedony fortification lines, then it finished filling with calcite crystal. I also noticed the reddish plug of dung beetle poo that was left in the cavity that I suppose was made by a bug. A coprolite within a coprolite, as it were. Oh, oh, oh! Raising my hand! I noticed everything going on! LOL!
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RWA3006
Cave Dweller
Member since March 2009
Posts: 4,171
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Post by RWA3006 on Dec 8, 2022 14:31:42 GMT -5
That last one is a beauty! The size of the ghost limb has me thinking again. Always a dangerous proposition, but here goes my thought. The size of the ghost limbs relative to the overall size of the coprolites can be impressively large and I would imagine difficult to pass. Could it be that the original dropping was significantly larger than the fossilized coprolite? These dinos must have had strong digestive tracts to support their diets, but the size of some of the limbs seems very large to pass through. On the other hand, the pelletized poops where the pellets are visible from the exterior would suggest that the final fossilized poop was pretty much unaltered from the original. But then you wouldn’t have those large limb ghosts in the small pellets. And the pelletized poo would suggest that the pellets may be harder (less water content) than the other types of poop. I’m thinking the difference between deer pellets and a cow patty on that one. If the poops with limb ghosts are wetter than the pelletized poo, then it could stand to reason that the coprolite is not necessarily the same as the fresh dropping given the chance to erode or shrinkage due to drying. Clearly spending way to much time pondering prehistoric poo… Exactly. And now you've got me thinking... I'm not sure I can remember big limbs occuring within specimens that are highly pelletized. Now I have an excuse to go back through the collection and see.
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Brian
fully equipped rock polisher
Member since July 2020
Posts: 1,506
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Post by Brian on Dec 8, 2022 14:54:41 GMT -5
That last one is a beauty! The size of the ghost limb has me thinking again. Always a dangerous proposition, but here goes my thought. The size of the ghost limbs relative to the overall size of the coprolites can be impressively large and I would imagine difficult to pass. Could it be that the original dropping was significantly larger than the fossilized coprolite? These dinos must have had strong digestive tracts to support their diets, but the size of some of the limbs seems very large to pass through. On the other hand, the pelletized poops where the pellets are visible from the exterior would suggest that the final fossilized poop was pretty much unaltered from the original. But then you wouldn’t have those large limb ghosts in the small pellets. And the pelletized poo would suggest that the pellets may be harder (less water content) than the other types of poop. I’m thinking the difference between deer pellets and a cow patty on that one. If the poops with limb ghosts are wetter than the pelletized poo, then it could stand to reason that the coprolite is not necessarily the same as the fresh dropping given the chance to erode or shrinkage due to drying. Clearly spending way to much time pondering prehistoric poo… Exactly. And now you've got me thinking... I'm not sure I can remember big limbs occuring within specimens that are highly pelletized. Now I have an excuse to go back through the collection and see. I am curious what you will find. As I was writing down those thoughts, it dawned on me that the only limb ghosts I could recall were within the coprolites lacking the pelletized look. I also wonder if those areas you’ve identified as dung beetle tracks only appear in the non-pelletized coprolites as well.
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RWA3006
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Member since March 2009
Posts: 4,171
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Post by RWA3006 on Dec 13, 2022 7:40:08 GMT -5
TURD TUESDAY Here is a good way to cut coprolite specimens for maximum beauty.
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RWA3006
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Member since March 2009
Posts: 4,171
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Post by RWA3006 on Dec 15, 2022 7:44:31 GMT -5
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Post by rockjunquie on Dec 15, 2022 7:49:45 GMT -5
Reminds me a lot of youngite.
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RWA3006
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Posts: 4,171
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Post by RWA3006 on Dec 18, 2022 20:32:48 GMT -5
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RWA3006
Cave Dweller
Member since March 2009
Posts: 4,171
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Post by RWA3006 on Dec 20, 2022 7:47:08 GMT -5
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