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Author Topic:   Mammals rebound
Coragyps
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Posts: 5553
From: Snyder, Texas, USA
Joined: 11-12-2002


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Message 18 of 20 (865878)
11-01-2019 1:16 PM
Reply to: Message 17 by RAZD
11-01-2019 12:43 PM


Re: Mammals not fossilized in the usual way?
The paper that was posted posits that the carbonate in the concretions came from rotting organic matter in the critters that were buried, not from bones. The bones (or shells, etc.) would be left to fossilize by other means. And though the paper is on marine fossils, I can’t see any necessity for seawater in the process- any water with decent calcium content would work the same.
The concretions in my house’s water heater show that.

Edited by Coragyps, : No reason given.


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 Message 17 by RAZD, posted 11-01-2019 12:43 PM RAZD has acknowledged this reply

  
Coragyps
Member
Posts: 5553
From: Snyder, Texas, USA
Joined: 11-12-2002


Message 20 of 20 (865890)
11-01-2019 9:08 PM
Reply to: Message 19 by Faith
11-01-2019 6:04 PM


Re: Apatite not calcite
That’s different, and out of my limited expertise. Apparently it was a surprise to the researchers as well. But they did say that it was fossils inside the concretions - I claim ignorance of how calcium phosphate concretions form, unless it’s the apatite of bones dissolving and recrystallizing as the concretion. Weird.

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