Jaki gatunek Mariopteris?

[Wanda8]

What species of Mariopteris does the specimen below represent?

 

[Tidgy's Dad]

No idea, but it's a very nice piece! 

[FossilDAWG]

What does “Jaki gatunek” mean?

 

it will be hard to ID a species without a geological formation and age.

 

Don

[FossilNerd]

10 minutes ago, FossilDAWG said:

What does “Jaki gatunek” mean?

It translates to”What species”, or “What kind”  from Polish. Depending on which translator I use.

Edited May 28, 2023 by FossilNerd

[connorp]

Finding published lists of species for the specific stratigraphic unit you're collecting is the most reliable way to obtain precise IDs for plants in my experience. Lot's of very similar forms which may be split as a different species due to very small details.

[Wanda8]

Locality: Poland, Upper Silesia
Age: Carboniferous, Westphalian "B" (Upper Carboniferous, Middle Pennsylvanian Period), 310 million years ago.

 

Ferns from Polish hard coal mines, from seams at a depth of 1050 meters. Below is another example of Mariopteris, 

5 inches long.

 

[Wanda8]

I invite you to explore Polish mines! Most of the mines have been closed, but a few are still open.

 

Lonchopteris (also from my collection).