JustRocks1 Posted April 19, 2017 Share Posted April 19, 2017 Hello- We found three unidentified fossils by a lake bed several years ago. It appears to be a cephalopod of some kind. The animal has 'plates' instead of 'ridges' though. The longest fossil measures at 7". Can you please help with the identification? Thank you! Link to comment Share on other sites More sharing options...
westcoast Posted April 19, 2017 Share Posted April 19, 2017 This is an orthoconic nautiloid with siphuncle and chambers. Very nice find 1 Link to comment Share on other sites More sharing options...
JustRocks1 Posted April 19, 2017 Author Share Posted April 19, 2017 Thank you for your quick response! How old would you estimate this fossil to be? Is this a cephalopod? Link to comment Share on other sites More sharing options...
Ludwigia Posted April 19, 2017 Share Posted April 19, 2017 @JustRocks1 Nautiloids are cephalopods. Class Cephalopoda, Subclass Nautiloidea, Order Orthocerida. 3 Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
Fossildude19 Posted April 19, 2017 Share Posted April 19, 2017 Orthocone cephalopod. Where it was found might tell us how old it is. Definitely Paleozoic. 488 mya to 300 mya. Regards, 3 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...
abyssunder Posted April 19, 2017 Share Posted April 19, 2017 Yes, they are cephalopods, orthoconic (straight) cephalopods. More precisely, the original structure was eroded away, but you can see the internal mold, the infill material of the chambers (camerae) which is the same as the matrix of the embedded orthocones, and the central "tube" where once the siphuncle was. 1 " 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...
Peat Burns Posted April 19, 2017 Share Posted April 19, 2017 Nice find and very nice photographs (which help significantly in quick and reliable identification) Link to comment Share on other sites More sharing options...
JustRocks1 Posted April 19, 2017 Author Share Posted April 19, 2017 Thank you for your help, everyone! Much appreciated. Link to comment Share on other sites More sharing options...
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