Gen. et sp. indet. Posted July 12, 2017 Share Posted July 12, 2017 From a Callovian site in southern Poland I collected a lot od thick-walled tubes. Sometimes they seem to be a part of something bigger, but I mainly search small rocks on heaps so I don't have a more complete picture of the fossil. Associated are various brachiopods, bivalves (including oysters and Ctenostreon), serpulids, ammonites, belemnites and various different fauna. I think these are clearly not belemnites. I don't think these are crinoids. I consider bivalve fragments (e.g. spines of Ctenostreon) or some huge serpulids. Any ideas? Specimen No. 1: Specimen No. 2: Link to comment Share on other sites More sharing options...
Miocene_Mason Posted July 12, 2017 Share Posted July 12, 2017 Random guess: Scaphopod? “...whilst this planet has gone cycling on according to the fixed law of gravity, from so simple a beginning endless forms most beautiful and most wonderful have been and are being evolved.” ~ Charles Darwin Happy hunting, Mason Link to comment Share on other sites More sharing options...
Gen. et sp. indet. Posted July 12, 2017 Author Share Posted July 12, 2017 Too big, too thick, not known from the site, the tubes seem to be parts of something bigger. Link to comment Share on other sites More sharing options...
doushantuo Posted July 12, 2017 Share Posted July 12, 2017 random guess:Lukow? I'd go for serpulid,myself Link to comment Share on other sites More sharing options...
Gen. et sp. indet. Posted July 12, 2017 Author Share Posted July 12, 2017 Actually, the two specimens come from two different parking lots, from rocks that were brought, I suppose, from Zalas site. Link to comment Share on other sites More sharing options...
Arizona Chris Posted July 12, 2017 Share Posted July 12, 2017 If I found something like that in a marine deposit, my first impression on the top image is that it would be a gastropod in that the right "tube" is larger than the left side. Maybe one coil? But that second and third image of that larger specimen is quite interesting. Such a thick wall. And look at that fine surface sclupting. ---------------------------------------------------------------------------------------------------------------------------- Arizona Chris Paleo Web Site: http://schursastrophotography.com/fossiladventures.html Link to comment Share on other sites More sharing options...
Gen. et sp. indet. Posted July 25, 2017 Author Share Posted July 25, 2017 The mystery have been now solved. The tubes like the one from the photos 2-4 are spikes of Ctenostreon proboscideum. I suggested it in my first post, but only later got a confirmation from an expert. 1 Link to comment Share on other sites More sharing options...
abyssunder Posted July 25, 2017 Share Posted July 25, 2017 (edited) It could be, I agree, considering that the Ctenostreon proboscideum valves were very large in the Callovian of Zalas (Zalas Quarry). About the first picture, I think there could be serpulid/ sabellid worm tubes cemented together (calcitic/aragonitic tubes), in a trensverse section, similar to the ones below, in the comparative picture, from the Upper Cretaceous (Maastrichtian) of Belgium and Netherlands. Fig. 12. C. would be close to my thinking. excerpt from T. Koci et al. 2016. Sabellid and serpulid worm tubes (Polychaeta, Canalipalpata, Sabellida) from the historical stratotype of the Cenomanian (Late Cretaceous; Le Mans region, Sarthe, France). Annales de Paléontologie 103 (2017) 45–80. Edited July 25, 2017 by abyssunder " 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...
Gen. et sp. indet. Posted July 26, 2017 Author Share Posted July 26, 2017 Thanks. Either this or a gastropod Link to comment Share on other sites More sharing options...
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