Miocene_Mason Posted August 7, 2017 Share Posted August 7, 2017 I'm helping @0lderthandirt with identifying the fossil Fauna of his land, and while I was looking through things I came across this one that broke in transit. This is from Arizona, red wall limestone,mississipian. I have no clue as to what it is, Any ideas? “...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...
Arizona Chris Posted August 7, 2017 Share Posted August 7, 2017 Looks like a diagenetic growth of chert on top of something, maybe a mollusk. 2 ---------------------------------------------------------------------------------------------------------------------------- Arizona Chris Paleo Web Site: http://schursastrophotography.com/fossiladventures.html Link to comment Share on other sites More sharing options...
FossilDAWG Posted August 7, 2017 Share Posted August 7, 2017 I think it Beekite on a productid brachiopod shell. Here is a photo (from the web) of a similar specimen. Don 2 Link to comment Share on other sites More sharing options...
Miocene_Mason Posted August 7, 2017 Author Share Posted August 7, 2017 2 minutes ago, FossilDAWG said: I think it Beekite on a productid brachiopod shell. Here is a photo (from the web) of a similar specimen. Don I think that is exactly it, Thanks you! “...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...
FossilDAWG Posted August 7, 2017 Share Posted August 7, 2017 BTW "beekite" is pretty much a "diagenic growth of chert" so Arizona Chris was spot on as well. Don Link to comment Share on other sites More sharing options...
Miocene_Mason Posted August 7, 2017 Author Share Posted August 7, 2017 48 minutes ago, Arizona Chris said: Looks like a diagenetic growth of chert on top of something, maybe a mollusk. Thank you for your help! I'm guessing your local knowledge will be a big help in my cataloging here. 1 minute ago, FossilDAWG said: BTW "beekite" is pretty much a "diagenic growth of chert" so Arizona Chris was spot on as well. Don I was just writing to him as well, never would have guessed at diagenesis, I was thinking like a wierd bryozoan! “...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...
Arizona Chris Posted August 7, 2017 Share Posted August 7, 2017 From Wikipedia, the free encyclopedia Base of the scleractinian coralMicrosolena showing beekite rings; Middle Jurassic of southern Israel. Beekite is a distinctive form of chalcedony usually associated with silica replacing carbonate minerals in fossils (e.g. the top part of the coral illustrated).[1] Beekite, recognised as small, concentric rings (cylinders, ellipsoids, or spheres in 3D) of microcrystalline quartz is recorded as first brought to attention of geologists by Henry Beeke, probably from studies around Torbay.[2] Early studies were reported by Thomas McKenny Hughes, in Devon,[3] and R. Etheridge in Australia.[4] A study of the taphonomy of silicified fossils (especially brachiopods) in Devon concluded beekite resulted from the aerobic decomposition of organic matter in an environment with a limited supply of silica during early diagenesis.[5] Bwa-ha-ha! 1 ---------------------------------------------------------------------------------------------------------------------------- Arizona Chris Paleo Web Site: http://schursastrophotography.com/fossiladventures.html Link to comment Share on other sites More sharing options...
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