JoetheJerseyGuy Posted February 28, 2022 Share Posted February 28, 2022 Big Brook, NJ : Coprolite, rock or other? Link to comment Share on other sites More sharing options...
Fossildude19 Posted February 28, 2022 Share Posted February 28, 2022 Ironstone concretion, I think. I don't see any kind of spiral indicative of coprolite, as usually seen in coprolites from Big Brook. @Carl @frankh8147 @Jeffrey P 1 1 1 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...
Plax Posted February 28, 2022 Share Posted February 28, 2022 could this be a non shark coprolite? 1 1 Link to comment Share on other sites More sharing options...
val horn Posted February 28, 2022 Share Posted February 28, 2022 ? Seed cone ?pine or sequoia like. I have collected plenty of concretions however that kind of repetitive large surface ornamentation is different than i expect in a concretion. And the cones i have seen have often been in ironstone 1 Link to comment Share on other sites More sharing options...
JoetheJerseyGuy Posted March 1, 2022 Author Share Posted March 1, 2022 (edited) 41 minutes ago, val horn said: ? Seed cone ?pine or sequoia like. I have collected plenty of concretions however that kind of repetitive large surface ornamentation is different than i expect in a concretion. And the cones i have seen have often been in ironstone My thoughts, I have shifted through tons of concretions, some interesting others the usually. The pattern on this item is unusually. Edited March 1, 2022 by JoetheJerseyGuy Link to comment Share on other sites More sharing options...
Carl Posted March 1, 2022 Share Posted March 1, 2022 (edited) I suspect that it is a coprolite. Hard to be sure with ones like this, however. I'm not seeing any real indication of a spiral so it's not likely a non-teleost fish if it is a coprolite. The repetitive "segmentation" could suggest that it is a mass of smaller, invertebrate coprolites. Edited March 1, 2022 by Carl 2 1 Link to comment Share on other sites More sharing options...
val horn Posted March 1, 2022 Share Posted March 1, 2022 I wonder if any of paleobotanists out there have looked at it? @Plantguy @paleoflor. I am thinking of one of the cones that was not a sequoia that was identified by hollik and Jeffrey’s in nj in the early 1900s. I can’t find the photos on the web right now. 1 Link to comment Share on other sites More sharing options...
JoetheJerseyGuy Posted March 1, 2022 Author Share Posted March 1, 2022 (edited) Appreciate everyone's input thus far. Edited March 2, 2022 by JoetheJerseyGuy Link to comment Share on other sites More sharing options...
Sjfriend Posted March 2, 2022 Share Posted March 2, 2022 As for possible sequoia cone, the ones I've seen that were positively ID'd as such were more rounded overall not elongated. Like 2cm wide x 2.5-3cm ling Link to comment Share on other sites More sharing options...
Rockwood Posted March 2, 2022 Share Posted March 2, 2022 22 hours ago, Carl said: a mass of smaller, invertebrate coprolites. A crescent moon is the international symbol for outhouse. 3 Link to comment Share on other sites More sharing options...
val horn Posted March 2, 2022 Share Posted March 2, 2022 (edited) What i was thinking of was not sequoia but gientz maybe Edited March 2, 2022 by val horn Spelling 1 Link to comment Share on other sites More sharing options...
Plax Posted March 2, 2022 Share Posted March 2, 2022 "ropy" coprolite for me still 1 1 Link to comment Share on other sites More sharing options...
val horn Posted March 2, 2022 Share Posted March 2, 2022 I have been wrong before and will be wrong again Link to comment Share on other sites More sharing options...
pachy-pleuro-whatnot-odon Posted March 4, 2022 Share Posted March 4, 2022 (edited) Lets ask our in-house coprolite expert @GeschWhat what she makes of this... I myself am a bit undecided on this one, with my initial impression being like Tim that this was a bit of ironstone. Now I've taken a better look I'm not so sure any more, as I'd expect the brown particles in the cracks to be more red if the piece was made of iron, whereas, simultaneously, the patterning of the rock seems very consistent... Edited March 4, 2022 by pachy-pleuro-whatnot-odon 1 'There's nothing like millions of years of really frustrating trial and error to give a species moral fibre and, in some cases, backbone' -- Terry Pratchett Link to comment Share on other sites More sharing options...
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