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Upper Devonian Plants


RomanK

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This trip was to the southern boundary of the Donetsk Coal Basin. In geology sense it's boundary between Devonian (Famennian) and Carboniferous (Tournaisian) time.

That is quite nice place and weather

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We hunted on the Devonian 'part' of the lake shore and found a lot small plant fragments of ... not divided yet. Possibly it is Lepidodendropsis or Archaeopteris branches.

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There is no exact name for this plant, I would say Helenia karakubensis (Schmalh.), other name you can find Lepidodendropsis theodori (М. Zalessky) Jongm. or Protolepidodendron.

Bark print close ups:

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RomanK,

You are lucky to have so many places to collect from! And the details of the fossils are Amazing! wub.gif

Looks like it was a beautiful day!

The 3 dimensional branches are stunning!

In your second post, second photo from the left on the top row,... 1st fossil - is the dark brown coloration a mineral stain in the rock, or is it some kind of cone, or seed structure?

Looks interesting. Also - what kind of rock is it? Is it limestone or sandstone??

Thank you for posting your finds... can't wait to see what you find next!!

Good Luck!

    Tim    VETERAN SHALE SPLITTER

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Hey Roman, Great finds! I wish I knew more about Devonian plants--I may have to do some reading again...Amazing size and lack of compaction/flattening in what you collected.

I'm also impressed with the apparent variety of leaf cushion shapes/patterns there. Differences due to various positions/location on the plant/tree or maybe different species? Very nice!

Thanks for sharing! Regards, Chris

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Very nice plant fossils, Roman! Much better than the fragments I find. I'm jealous! :D

-Dave

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Geologists on the whole are inconsistent drivers. When a roadcut presents itself, they tend to lurch and weave. To them, the roadcut is a portal, a fragment of a regional story, a proscenium arch that leads their imaginations into the earth and through the surrounding terrain. - John McPhee

If I'm going to drive safely, I can't do geology. - John McPhee

Check out my Blog for more fossils I've found: http://viewsofthemahantango.blogspot.com/

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RomanK,

You are lucky to have so many places to collect from! And the details of the fossils are Amazing! wub.gif

Looks like it was a beautiful day!

The 3 dimensional branches are stunning!

Hi Tim, thanks for your comment.

In your second post, second photo from the left on the top row,... 1st fossil - is the dark brown coloration a mineral stain in the rock, or is it some kind of cone, or seed structure?

I don't think so, conglomerates are very typical for that site, because there is a paleovolcano just next to the hollow I hunted. So it's an element of conglomerate structure.

Looks interesting. Also - what kind of rock is it? Is it limestone or sandstone??

Yellow is sandstone-tuff, brown - porphyrite, green - fly-ash-type streaky tuff (volcano!). There are a lot of volcanic bombs as well.

Devonian paleovolcano

post-814-1272984038457_thumb.jpg

Thank you for posting your finds... can't wait to see what you find next!!

Good Luck!

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Hey Roman, Great finds! I wish I knew more about Devonian plants--I may have to do some reading again...Amazing size and lack of compaction/flattening in what you collected.

I'm also impressed with the apparent variety of leaf cushion shapes/patterns there. Differences due to various positions/location on the plant/tree or maybe different species? Very nice!

Thanks for sharing! Regards, Chris

Hi Chris, I'm still at a loss with particular ID. Obviuosly that is Lycopsid (club moss). Russian paleobotanists call it Lepidodendron caracubense (from Caracuba - former name of Razdolne settlement). Old name is greek by the way, we've got some Crimea's greeks settlements since Katerine II the Great (Russian Empire 18 century). She just moved them from Crimea to Azov sea shore in 1770-s. That tree has forerun to Carboniferous Lepidodendrons and possibly was next after Arhaeopteris. Other name is Protolepidodendron or Lepidodendropsis. May be I'm wrong.

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  • 6 months later...

This trip was to the southern boundary of the Donetsk Coal Basin. In geology sense it's boundary between Devonian (Famennian) and Carboniferous (Tournaisian) time.

That is quite nice place and weather

post-814-12729037118726_thumb.jpgpost-814-1272903718081_thumb.jpgpost-814-12729037244328_thumb.jpg

We hunted on the Devonian 'part' of the lake shore and found a lot small plant fragments of ... not divided yet. Possibly it is Lepidodendropsis or Archaeopteris branches.

post-814-12729040113549_thumb.jpgpost-814-12729040200421_thumb.jpgpost-814-1272904027218_thumb.jpgpost-814-12729040362239_thumb.jpg

Nice fossils and interesting site!

Are you able to collect from the Tournaisian section as well, and what differences do you notice between the fossils of the two areas?

Eric

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Nice fossils and interesting site!

Are you able to collect from the Tournaisian section as well, and what differences do you notice between the fossils of the two areas?

Eric

Hi Eric, I didn't notice any fossils in Carboniferous layer which was mainly a limestone and according to geological information I have, had to contain the marine fossils like shell. In Devonian part of the outcrop I found only plant fossils. Regards, Roman

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Hey Roman,

those finds make me drool :mellow:

Concering the Archaeopteris, you are correct.

Really great material! Haven't seen it in that state of preservation.

Sven

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Some of your finds have awesome details. Congratulations! And WOW, that country side is so beautiful that the fossils are just a bonus there.

"It is difficult to get a man to understand something when his salary depends upon his not understanding it."

Upton Sinclair

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