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Cant figure it out


Grizzlydan

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What county was it found in?

    Tim    -  VETERAN SHALE SPLITTER

   MOTM.png.61350469b02f439fd4d5d77c2c69da85.png      PaleoPartner.png.30c01982e09b0cc0b7d9d6a7a21f56c6.png.a600039856933851eeea617ca3f2d15f.png     Postmaster1.jpg.900efa599049929531fa81981f028e24.jpg    VFOTM.png.f1b09c78bf88298b009b0da14ef44cf0.png  VFOTM  --- APRIL - 2015  

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"In every walk with nature one receives far more than he seeks."

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14 hours ago, Fossildude19 said:

What county was it found in?

Atchison county

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9 hours ago, Grizzlydan said:

Atchison county

Hey Grizzly Dan neat find. here's a beginning geologic chart....

Tim was spot on with trying to narrow down the age/options. Looks like it could be from Paleozoic aged source rock (Ps) (Pw) or (Pks--strip of the brightest blue along the Missouri river) or mapped as glacial drift--brown areas (Qgd). Not looking like any direct Mesozoic sources in the county...but that glacial element can certainly throw a wrench into determining age...Please tell us so we might narrow it down. Looks like this map was derived from the state map and not local survey info..

Thanks!

Regards, Chris 

Map from KGS...http://www.kgs.ku.edu/General/Geology/County/abc/atchison.html

2127838293_AtchisonCountyKansasGeologicMapfromKGSsite.jpg.b7c0058d90c526e1679c0d6a171526b6.jpg

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Consider looking up the genus Pholadomya. This one has more obvious concentric lines than most but it has the appropriate shape

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Maybe its Wilkingia if this turns out to be Carboniferous aged stuff..

Found this thread where Missourian ID'd a similar looking Pennsylvanian bivalve. May need his thoughts/input if we get the age established.

 

 

Not sure if additional views of the hinge/teeth will be needed...1586926318_KansasbivalveunknownAtchisoncounty.jpg.15489ba2a76bd169eea3eb064ecae539.jpg

 

Done speculating for the moment...

 

Regards, Chris 

 

 

 

 

 

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15 hours ago, Plantguy said:

Hey Grizzly Dan neat find. here's a beginning geologic chart....

Tim was spot on with trying to narrow down the age/options. Looks like it could be from Paleozoic aged source rock (Ps) (Pw) or (Pks--strip of the brightest blue along the Missouri river) or mapped as glacial drift--brown areas (Qgd). Not looking like any direct Mesozoic sources in the county...but that glacial element can certainly throw a wrench into determining age...Please tell us so we might narrow it down. Looks like this map was derived from the state map and not local survey info..

Thanks!

Regards, Chris 

Map from KGS...http://www.kgs.ku.edu/General/Geology/County/abc/atchison.html

2127838293_AtchisonCountyKansasGeologicMapfromKGSsite.jpg.b7c0058d90c526e1679c0d6a171526b6.jpg

It was right beside the missouri river outside atchison

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@Missourian If this is Pennsylvanian aged do you think its possibly Wilkingia? Your thoughts please...

 

I can see the Inoceramid similarity as Rockwood proposed and some of the other suggestions seem close as well. Does this example differ much from what you're finding in your neck of the woods?

 

Thanks.

Regards, Chris 

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Wilkingia yes. They have also been called Allorisma in older publications.

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Context is critical.

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10 hours ago, Plantguy said:

@Missourian If this is Pennsylvanian aged do you think its possibly Wilkingia? Your thoughts please...

 

I can see the Inoceramid similarity as Rockwood proposed and some of the other suggestions seem close as well. Does this example differ much from what you're finding in your neck of the woods?

 

Thanks.

Regards, Chris 

 

Way to go, Chris! Spot on! :tiphat:

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    Tim    -  VETERAN SHALE SPLITTER

   MOTM.png.61350469b02f439fd4d5d77c2c69da85.png      PaleoPartner.png.30c01982e09b0cc0b7d9d6a7a21f56c6.png.a600039856933851eeea617ca3f2d15f.png     Postmaster1.jpg.900efa599049929531fa81981f028e24.jpg    VFOTM.png.f1b09c78bf88298b009b0da14ef44cf0.png  VFOTM  --- APRIL - 2015  

__________________________________________________
"In every walk with nature one receives far more than he seeks."

John Muir ~ ~ ~ ~   ><))))( *>  About Me      

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21 hours ago, Missourian said:

Wilkingia yes. They have also been called Allorisma in older publications.

Thanks for looking and confirming!

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