ZenMachine Posted December 14, 2018 Share Posted December 14, 2018 Hi all Came across this on the beach today. Any ideas? Link to comment Share on other sites More sharing options...
ZenMachine Posted December 14, 2018 Author Share Posted December 14, 2018 Another angle Link to comment Share on other sites More sharing options...
DeepTimeIsotopes Posted December 14, 2018 Share Posted December 14, 2018 Looks like a worn crinoid stem. Where’d you get it? 1 Each dot is 50,000,000 years: Hadean............Archean..............................Proterozoic.......................................Phanerozoic........... Paleo......Meso....Ceno.. Ꞓ.OSD.C.P.Tr.J.K..Pg.NgQ< You are here Doesn't time just fly by? Link to comment Share on other sites More sharing options...
abyssunder Posted December 14, 2018 Share Posted December 14, 2018 The matrix or substrate has advanced bioerosion markings (e.g. sponge - and worm borings). The "worm" could be an ammonite whorl, or something else. More pictures are needed from all sides, especially from the pointed end. 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...
Rockwood Posted December 14, 2018 Share Posted December 14, 2018 Heteromorph ammonite is what came to my mind. 2 Link to comment Share on other sites More sharing options...
Tidgy's Dad Posted December 14, 2018 Share Posted December 14, 2018 If it is from a beach in Northern Ireland, it is almost certainly Palaeozoic. But some Cretaceous does occur. 1 Life's Good! Tortoise Friend. Link to comment Share on other sites More sharing options...
Tidgy's Dad Posted December 14, 2018 Share Posted December 14, 2018 Hmmmm. This is interesting, though. http://www.habitas.org.uk/fossils/pseudoxybeloceras.html 2 Life's Good! Tortoise Friend. Link to comment Share on other sites More sharing options...
Notidanodon Posted December 14, 2018 Share Posted December 14, 2018 I think it is part of a hetemorph ammonite 1 Link to comment Share on other sites More sharing options...
Innocentx Posted December 14, 2018 Share Posted December 14, 2018 55 minutes ago, Tidgy's Dad said: Hmmmm. Yes, in some places in the photos the ribbing? does seem to be at an angle, but this is quite worn and hard to tell. Perhaps a single photo with lighting accentuating the shadows cast by what might be ribbing, could show the angle better, if it exists. 3 "Journey through a universe ablaze with changes" Phil Ochs Link to comment Share on other sites More sharing options...
ZenMachine Posted December 15, 2018 Author Share Posted December 15, 2018 Thanks for the feedback. Yes, East coast of Northern Ireland. Hopefully these photos may help? Link to comment Share on other sites More sharing options...
ZenMachine Posted December 15, 2018 Author Share Posted December 15, 2018 16 hours ago, abyssunder said: The matrix or substrate has advanced bioerosion markings (e.g. sponge - and worm borings). The "worm" could be an ammonite whorl, or something else. More pictures are needed from all sides, especially from the pointed end. This any good? Link to comment Share on other sites More sharing options...
Innocentx Posted December 15, 2018 Share Posted December 15, 2018 From these new pictures I would say this is probably ammonoid and not crinoid. More visits to this site could yield better specimens. Good luck! 1 "Journey through a universe ablaze with changes" Phil Ochs Link to comment Share on other sites More sharing options...
ZenMachine Posted December 15, 2018 Author Share Posted December 15, 2018 Cheers for the feedback. Pretty cool that it was alive at some point. Is there any way of guessing age? Link to comment Share on other sites More sharing options...
Innocentx Posted December 15, 2018 Share Posted December 15, 2018 Here is stratigraphic map or you can get more rsults by searching "Ireland stratigraphy map". http://www.lahistoriaconmapas.com/atlas/ireland-map/geological-map-of-ireland.htm 2 "Journey through a universe ablaze with changes" Phil Ochs Link to comment Share on other sites More sharing options...
abyssunder Posted December 15, 2018 Share Posted December 15, 2018 Maybe this geological map helps also. 2 " 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...
ZenMachine Posted December 16, 2018 Author Share Posted December 16, 2018 Thanks again. I found it right in The Carrickfergus dot basically. Link to comment Share on other sites More sharing options...
Rockwood Posted December 16, 2018 Share Posted December 16, 2018 27 minutes ago, ZenMachine said: Thanks again. I found it right in The Carrickfergus dot basically. Color coding isn't really my thing, but I think that is the right age for heteromorphs. Link to comment Share on other sites More sharing options...
Johannes Posted December 16, 2018 Share Posted December 16, 2018 The rock looks very "cretaceous" to me, and the fossil might be part of a sponge, e.g. Ventriculites, but no heteromorph ammonite Link to comment Share on other sites More sharing options...
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