0lderthandirt Posted September 18, 2017 Share Posted September 18, 2017 Arizona, redwall limestone, Mooney member, Mississippian. I've found several of these and I'm just not sure what's going on here. Looks like fossilized worms eating away at the brachiopod but now I'm thinking the tubular structures are fossilized guts. Any thoughts or other possibilities would be appreciated, thank you. Will your next answer to my question be no? Link to comment Share on other sites More sharing options...
Arizona Chris Posted September 18, 2017 Share Posted September 18, 2017 Not guts. Looks like eroded chert. or possibly silicified worm burrows in the sediment that infilled the shell. The most preservable "guts" in a brach is the brachial apparatus, which looks like a pair of helicoils on each side. None seen here. ---------------------------------------------------------------------------------------------------------------------------- Arizona Chris Paleo Web Site: http://schursastrophotography.com/fossiladventures.html Link to comment Share on other sites More sharing options...
0lderthandirt Posted September 18, 2017 Author Share Posted September 18, 2017 40 minutes ago, Arizona Chris said: The most preservable "guts" in a brach is the brachial apparatus, which looks like a pair of helicoils on each side I thought this might be the helicoils in a broken down collapsed state. But maybe not. They are all about same size and hollow, as seen under magnification here. Thanks for your suggestion. Will your next answer to my question be no? Link to comment Share on other sites More sharing options...
Herb Posted September 19, 2017 Share Posted September 19, 2017 looks like pieces of broken exterior spines to me. "Absence of evidence is not evidence of absence"_ Carl Sagen No trees were killed in this posting......however, many innocent electrons were diverted from where they originally intended to go. " I think, therefore I collect fossils." _ Me "When you have eliminated the impossible, whatever remains, however improbable, must be the truth."__S. Holmes "can't we all just get along?" Jack Nicholson from Mars Attacks Link to comment Share on other sites More sharing options...
Miocene_Mason Posted September 19, 2017 Share Posted September 19, 2017 Based on what of learned of these fossils so far, it is probably a product of diagenesis (something akin to beekite). “...whilst this planet has gone cycling on according to the fixed law of gravity, from so simple a beginning endless forms most beautiful and most wonderful have been and are being evolved.” ~ Charles Darwin Happy hunting, Mason Link to comment Share on other sites More sharing options...
0lderthandirt Posted September 19, 2017 Author Share Posted September 19, 2017 39 minutes ago, Herb said: looks like pieces of broken exterior spines to me. Looking at another similar brachiopod I agree it does look like broken spines Will your next answer to my question be no? Link to comment Share on other sites More sharing options...
Miocene_Mason Posted September 19, 2017 Share Posted September 19, 2017 It does kinda look like serpulids, but I don't believe they had evolved yet, and microconchs are spiral I think... “...whilst this planet has gone cycling on according to the fixed law of gravity, from so simple a beginning endless forms most beautiful and most wonderful have been and are being evolved.” ~ Charles Darwin Happy hunting, Mason Link to comment Share on other sites More sharing options...
0lderthandirt Posted September 19, 2017 Author Share Posted September 19, 2017 14 minutes ago, WhodamanHD said: It does kinda look like serpulids, but I don't believe they had evolved yet, and microconchs are spiral I think... I don't know that sepulids are in my area but the pics from a quick Google search sure look like the hollow tubes. I'll have to some of my other ones. Thanks Will your next answer to my question be no? Link to comment Share on other sites More sharing options...
Herb Posted September 19, 2017 Share Posted September 19, 2017 many brachiopod spines are hollow also. "Absence of evidence is not evidence of absence"_ Carl Sagen No trees were killed in this posting......however, many innocent electrons were diverted from where they originally intended to go. " I think, therefore I collect fossils." _ Me "When you have eliminated the impossible, whatever remains, however improbable, must be the truth."__S. Holmes "can't we all just get along?" Jack Nicholson from Mars Attacks Link to comment Share on other sites More sharing options...
0lderthandirt Posted September 19, 2017 Author Share Posted September 19, 2017 12 hours ago, Herb said: many brachiopod spines are hollow also. I just googled that, very interesting! Will your next answer to my question be no? Link to comment Share on other sites More sharing options...
Herb Posted September 20, 2017 Share Posted September 20, 2017 kooks like a Mississippian productid brachiopod "Absence of evidence is not evidence of absence"_ Carl Sagen No trees were killed in this posting......however, many innocent electrons were diverted from where they originally intended to go. " I think, therefore I collect fossils." _ Me "When you have eliminated the impossible, whatever remains, however improbable, must be the truth."__S. Holmes "can't we all just get along?" Jack Nicholson from Mars Attacks Link to comment Share on other sites More sharing options...
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