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Various Pennsylvanian Seeds, Cones, Etc.


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The Pennsylvanian is best known for its abundant plant life. Various fruitification structures can be found among the leaves and stems. I have a few in my collection....

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I'll start with the intricately structured Dolerotheca.

Tonganoxie Sandstone

Franklin County, Kansas:

post-6808-0-41720100-1375601144_thumb.jpg

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Dolerotheca is a pteridosperm (fern) spore case.

Upper Cherokee Group

Knob Noster, Missouri:

post-6808-0-21399600-1375601270_thumb.jpg

post-6808-0-64577800-1375601263_thumb.jpg

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Ok, Missiourian you've been holding back and I'm liking it!

Wow are those great specimens....incredible detail, the first one especially. Thanks for the photos/post. Regards, Chris

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Fossildude19

Mitch,

Thanks for posting these!

Something I have not seen before - very cool!

Regards,

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Thanks everyone. While searching for info on Dolerotheca, I found this PDF:

http://library.isgs.uiuc.edu/Pubs/pdfs/ri/ri142.pdf

I haven't had a chance to read through the paper, but it seems to be quite extensive and detailed.

Edited by Missourian
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Here are some cones posted in another thread....

Calamostachys sp.

Bonner Springs Shale

Platte County, Missouri

post-6808-0-02411800-1375257165_thumb.jpg
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Clusters:
post-6808-0-23158200-1374825859_thumb.jpg
post-6808-0-61156700-1374825846_thumb.jpg
Edited by Missourian
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Calamostachys sp.

Upper Cherokee Group

Knob Noster, Missouri

post-6808-0-75806200-1375682918_thumb.jpg

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Calamostachys sp.

Tonganoxie Sandstone

Franklin County, Kansas

post-6808-0-15166800-1375687299_thumb.jpg

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Cone of Sphenophyllum

Sphenophyllostachys sp.

Tonganoxie Sandstone

Franklin County, Kansas

post-6808-0-03228700-1375773905_thumb.jpg

post-6808-0-11327100-1375773899_thumb.jpg

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Fossildude19

Sweet! :wub:

Keep 'em coming!

The breadth of your collection is staggering.

Thanks for posting these.

Regards,

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Have to add a 2nd Wow after my earlier first Wow! I did also find your earlier fantastic plant thread from last year as I figured I was sleeping again and missed something. I did! Great material! Regards, Chris

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Some seeds

Tonganoxie Sandstone

Franklin County, Kansas

post-6808-0-57280800-1375861997_thumb.jpg

Where did they come from? Probably from the cone on the back of the slab:

post-6808-0-20960000-1375862049_thumb.jpg

This may be Lepidostrobus. Closer in:

post-6808-0-04354400-1375862082_thumb.jpg

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More seeds from the vicinity:

post-6808-0-04254200-1375862217_thumb.jpg

A couple up close:

post-6808-0-32048300-1375862209_thumb.jpg

These remind me of Corn Nuts :) :

post-6808-0-92557400-1375862482_thumb.jpg

Edited by Missourian
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  • 2 weeks later...

Very nice collection of fructifications! Did the taphonomic conditions prevailing at of your locality favour the preservation of reproductive structures or were you just incredibly lucky?

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Very nice collection of fructifications! Did the taphonomic conditions prevailing at of your locality favour the preservation of reproductive structures or were you just incredibly lucky?

The plant-bearing deposits are very local in extent, as is typical of the Midcontinent Pennsylvanian. Plus, we had to go through a lot of leaves and a whole lot of rock to find the fruiting structures. Of all the deposits, the Bonner Springs site seems to have the highest fruit-to-leaf ratio.

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