Missourian Posted July 15, 2012 Share Posted July 15, 2012 (edited) Here are a few Pennsylvanian bryozoans. All are from the Kansas City area. Polypora sp. with a stem Wyandotte Formation Johnson County, Kansas: Polypora sp. Polypora? sp. Conical fenestrate colony Wyandotte Formation Johnson County, Kansas: Large fenestrate colony Liberty Memorial Shale Kansas City, Missouri: Finely structured fenestrate: Middle Creek Limestone Jackson County, Missouri Septopora? sp. I'd thought this type was Septopora, but with seemingly constant name changes, I'm not so sure. The one on the left is from the Beil Limestone (Virgilian) in Osage County, Kansas Archimedes sp. Westerville Limestone Jackson County, Missouri: These were a surprise. Edited July 15, 2012 by Missourian Context is critical. Link to comment Share on other sites More sharing options...
Teres Posted July 15, 2012 Share Posted July 15, 2012 Wow! Beautiful specimens! Link to comment Share on other sites More sharing options...
Missourian Posted July 15, 2012 Author Share Posted July 15, 2012 (edited) Pinniretepora sp. Cement City Limestone Clay County, Missouri: Rhombopora sp. Winterset Limestone Jackson County, Missouri: Fossils were merely molds in this portion of the limestone. Undetermined Raytown Limestone Platte County, Missouri: Fistulipora sp. Large colony Middle Creek Limestone Jackson County, Missouri: Fistulipora sp. Middle Creek Limestone Jackson County, Missouri: I love the detail on this one. Fistulipora sp. (left) and Tabulipora sp. (right) Middle Creek Limestone (left); Island Creek Shale (right) Jackson County, Missouri (left); Johnson County, Kansas (right): Note the sponge borings on the Tabulipora. Undetermined encrusting type Spring Hill Limestone Clay County, Missouri: Undetermined encrusting type (edit: this is likely a species of Fistulipora) Westerville Limestone Jackson County, Missouri; Edited July 15, 2012 by Missourian Context is critical. Link to comment Share on other sites More sharing options...
Fossildude19 Posted July 15, 2012 Share Posted July 15, 2012 Wonderful! The encrusting ones are particularly neat, but the entire breadth of variety is remarkable. Thanks for the pics - I enjoy looking at these. Regards, Tim - VETERAN SHALE SPLITTER VFOTM --- APRIL - 2015 __________________________________________________ "In every walk with nature one receives far more than he seeks." John Muir ~ ~ ~ ~ ><))))( *> About Me Link to comment Share on other sites More sharing options...
grandpa Posted July 15, 2012 Share Posted July 15, 2012 What publication(s) are you using to ID your specimens? I have some Tx. Penn. Bryozoans that I need to ID. Link to comment Share on other sites More sharing options...
t-tree Posted July 15, 2012 Share Posted July 15, 2012 Great Bryozoans i especially like the encrusting ones. John Be happy while you're living for you're a long time dead. Link to comment Share on other sites More sharing options...
Missourian Posted July 15, 2012 Author Share Posted July 15, 2012 What publication(s) are you using to ID your specimens? I have some Tx. Penn. Bryozoans that I need to ID. That's a really good question. Bryozoans are quite challenging to id. In many cases, you have to section a piece and examine it under a microscope. I'm still struggling to id several pieces. A few types have superficial details that help. Polypora has several rows of pores, while other fenestrates have only two. Rhombopora's pores are arranged in a neat rhombic pattern, while those of Tabulipora are more irregular. Fistulipora has relatively large pores with a raised lip. But then again, the names I know may no longer be valid. In any case, we'd like to see some pics of your bryozoans. Context is critical. Link to comment Share on other sites More sharing options...
Missourian Posted July 15, 2012 Author Share Posted July 15, 2012 Since the encrusting types are so popular, I took some better pictures of my favorite piece.... Incredible detail: Note how the piece was fractured before fossilization. I had forgotten about this, but there is a second species of Fistulipora encrusted on the side: Context is critical. Link to comment Share on other sites More sharing options...
Herb Posted July 15, 2012 Share Posted July 15, 2012 Very nice bryozoas! "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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