Ossicle Posted August 19, 2017 Share Posted August 19, 2017 I went to Yaxley today, and after processing most of my finds I'm left with a few puzzles. I recently found an echinoid spine, and was wondering whether the first one below is part of an echinoid test, The second was picked up as a belemnite, but the cross section looks wrong, and I've seen echinoid spines in museums of a similar shape. The third bobbly one I have no clue, and would be grateful for any suggestions. I've called it Mr Bobbly. Finds are from Yaxley, UK, Jurassic, Lower Oxford Clay, Callovian. ETA: the order of the photos changed as I posted, the first fossil is the round black one in the images, the second is the very pale belemnite-like one, including cross sections, and the third is the long bobbly one. Link to comment Share on other sites More sharing options...
Miocene_Mason Posted August 20, 2017 Share Posted August 20, 2017 The top and bottom ones remind me of shrimp burrow, forget exact name, something like thassanoides. “...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...
Arizona Chris Posted August 20, 2017 Share Posted August 20, 2017 The club shaped piece reminds me of an urchin spine. ---------------------------------------------------------------------------------------------------------------------------- Arizona Chris Paleo Web Site: http://schursastrophotography.com/fossiladventures.html Link to comment Share on other sites More sharing options...
izak_ Posted August 20, 2017 Share Posted August 20, 2017 I agree with the above Link to comment Share on other sites More sharing options...
Fossildude19 Posted August 20, 2017 Share Posted August 20, 2017 59 minutes ago, WhodamanHD said: The top and bottom ones remind me of shrimp burrow, forget exact name, something like thassanoides. Thalassinoides. Tim - VETERAN SHALE SPLITTER VFOTM --- APRIL - 2015 __________________________________________________ "In every walk with nature one receives far more than he seeks." John Muir ~ ~ ~ ~ ><))))( *> About Me Link to comment Share on other sites More sharing options...
Miocene_Mason Posted August 20, 2017 Share Posted August 20, 2017 1 hour ago, Fossildude19 said: Thalassinoides. At least I was close! Hopefully I remember it next time. “...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...
Ossicle Posted August 20, 2017 Author Share Posted August 20, 2017 Thank you! Link to comment Share on other sites More sharing options...
TqB Posted August 20, 2017 Share Posted August 20, 2017 The second one is a fusiform belemnite, Hibolithes hastata, which is common at Yaxley. The front (blunt) end of these is poorly calcified, probably originally aragonitic, so the usual radiating fibrous structure is obscured. The single furrow in that area is characteristic of the genus. The umbilicus at the tip is unusual for this species but quite common in belemnites generally - possibly a slight pathology in this one. Tarquin Link to comment Share on other sites More sharing options...
Ossicle Posted August 20, 2017 Author Share Posted August 20, 2017 Thank you Tarquin, those were the elements that were confusing me on the belemnite. Link to comment Share on other sites More sharing options...
Arizona Chris Posted August 20, 2017 Share Posted August 20, 2017 Unless of course it is the variant of thalassinoides with a pelleted wall, then its ophiomorpha. Here I see no pellets however.... ---------------------------------------------------------------------------------------------------------------------------- Arizona Chris Paleo Web Site: http://schursastrophotography.com/fossiladventures.html Link to comment Share on other sites More sharing options...
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