Denis Arcand Posted October 6 Share Posted October 6 (edited) Is this a bryozoan colony or something else ? Sorry for the photo, but there are no visible details on the branches, I can't do better Quebec, Ordovician, Nicolet River Formation 1 2 3 4 5 Edited October 6 by Denis Arcand One fossil a day will keep you happy all day. Welcome to the FOSSIL ART Link to comment Share on other sites More sharing options...
westcoast Posted October 6 Share Posted October 6 These are tool marks on the base of a bed, so geological, sedimentary structures. 1 3 Link to comment Share on other sites More sharing options...
rocket Posted October 6 Share Posted October 6 or perhaps imprints of an ichnofossil Link to comment Share on other sites More sharing options...
Denis Arcand Posted October 6 Author Share Posted October 6 36 minutes ago, westcoast said: These are tool marks on the base of a bed, so geological, sedimentary structures. I understand you're saying that it is geological in nature, but I'm not clear on how it was formed. One fossil a day will keep you happy all day. Welcome to the FOSSIL ART Link to comment Share on other sites More sharing options...
Denis Arcand Posted October 6 Author Share Posted October 6 22 minutes ago, rocket said: or perhaps imprints of an ichnofossil That would be my guess but I'm not an expert One fossil a day will keep you happy all day. Welcome to the FOSSIL ART Link to comment Share on other sites More sharing options...
Rockwood Posted October 6 Share Posted October 6 Is this a part and counterpart or two specimens? Link to comment Share on other sites More sharing options...
Denis Arcand Posted October 6 Author Share Posted October 6 9 minutes ago, Rockwood said: Is this a part and counterpart or two specimens? Photos 2 to 5 are all close-ups of image 1 1 One fossil a day will keep you happy all day. Welcome to the FOSSIL ART Link to comment Share on other sites More sharing options...
Fossildude19 Posted October 6 Share Posted October 6 Sole markings/tool marks sound correct. 2 Tim - VETERAN SHALE SPLITTER VFOTM --- APRIL - 2015 IPFOTM -- MAY - 2024 _________________________________________________________________________________ "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...
Rockwood Posted October 6 Share Posted October 6 3 minutes ago, Denis Arcand said: Photos 2 to 5 are all close-ups of image 1 For some reason I was seeing 1 as being concave. This really scuttles my original thought. It is hard to imagine this variety of traces being on a single plate. Tool marks does seem like the best explanation. Link to comment Share on other sites More sharing options...
Sagebrush Steve Posted October 6 Share Posted October 6 The vertical lines on this one feature seem too uniform to be geological, but I am no expert. 1 Link to comment Share on other sites More sharing options...
Denis Arcand Posted October 7 Author Share Posted October 7 (edited) Maybe i am just seeing things. For the most prominent features , it look like current flowing in one direction (in red) , excepted where there are obstacles (in blue). This is in agreement with "tools mark", I don't think we would see that with ichnofossils. Furthermore, the saw like features, could be form by water currents, the same features can sometime be seen on top of snow bank formed by wind. Edited October 7 by Denis Arcand 1 One fossil a day will keep you happy all day. Welcome to the FOSSIL ART Link to comment Share on other sites More sharing options...
Denis Arcand Posted October 7 Author Share Posted October 7 Thanks everyone for helping me learn new things and vocabulary. It's still an interesting rock with features I can now name. 1 One fossil a day will keep you happy all day. Welcome to the FOSSIL ART Link to comment Share on other sites More sharing options...
Rockwood Posted October 7 Share Posted October 7 2 hours ago, Sagebrush Steve said: The vertical lines on this one feature seem too uniform to be geological, but I am no expert. A bryozoan with maculae on its surface touching briefly would probably do it. 1 Link to comment Share on other sites More sharing options...
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