Gen. et sp. indet. Posted April 20, 2017 Share Posted April 20, 2017 Jurassic, flint, Kraków region, Poland, coin size=15,50mm crinoid skeletal elements? Link to comment Share on other sites More sharing options...
Gen. et sp. indet. Posted April 20, 2017 Author Share Posted April 20, 2017 Jurassic, limestone, Kraków region, Poland, coin size=15,50mm echinoid spine? Link to comment Share on other sites More sharing options...
Gen. et sp. indet. Posted April 20, 2017 Author Share Posted April 20, 2017 Jurassic, flint, Kraków region, Poland, coin size=15,50mm brachiopod, bivalve? what genus? Link to comment Share on other sites More sharing options...
Gen. et sp. indet. Posted April 20, 2017 Author Share Posted April 20, 2017 Carboniferous, Upper Silesia, Poland spores, seeds, arthropod infestation on a bark, leave? Link to comment Share on other sites More sharing options...
westcoast Posted April 20, 2017 Share Posted April 20, 2017 Your first images might be nautiloid not crinoid. Third is probably brachiopod. I'm not sure that your final piece is organic. Interesting collection. Link to comment Share on other sites More sharing options...
EMP Posted April 20, 2017 Share Posted April 20, 2017 2 hours ago, Gen. et sp. indet. said: Carboniferous, Upper Silesia, Poland spores, seeds, arthropod infestation on a bark, leave? I've found a lot of those in lower Mississippian rocks from the Pocono Group of Maryland. I think for the most part they are seeds from some kind of seed fern. Your other fossils look more like belemites than crinoids. Link to comment Share on other sites More sharing options...
Gen. et sp. indet. Posted April 20, 2017 Author Share Posted April 20, 2017 Thank you for answers. If belemnites (phragmocones, I understand), why such an accumulation and no rostra? Link to comment Share on other sites More sharing options...
abyssunder Posted April 20, 2017 Share Posted April 20, 2017 (edited) This is a partial echinoid spine. Try to compare with these ones from the Zalas Quarry (southern part of the Polish Jura Chain), approx. 30km west of Kraków. link to source Your specimen looks to be a cidaroid spine, a large one, similar to Paracidaris laeviscula, described from the Zalas Quarry. More details in U. Radwanska. 2005. Callovian and Oxlordian echinoids ol Zalas. Volumina Jurassica 2005; 3 (1): 63-74 Edited April 20, 2017 by abyssunder 3 " We are not separate and independent entities, but like links in a chain, and we could not by any means be what we are without those who went before us and showed us the way. " Thomas Mann My Library Link to comment Share on other sites More sharing options...
jpc Posted April 20, 2017 Share Posted April 20, 2017 This collection looks just like the ones I get in Switzerland.... Link to comment Share on other sites More sharing options...
Gen. et sp. indet. Posted April 21, 2017 Author Share Posted April 21, 2017 Thanks all! Link to comment Share on other sites More sharing options...
klenkes4711 Posted May 11, 2017 Share Posted May 11, 2017 Hi, the Jurassic brachiopod in flint could be a Dictyothyropsis? guembeli (Oppel 1866) (Oxford-Kimmeridge). Cheers, Juergen 1 Link to comment Share on other sites More sharing options...
Gen. et sp. indet. Posted July 3, 2017 Author Share Posted July 3, 2017 thank you! Link to comment Share on other sites More sharing options...
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