Hapchazzard Posted September 20, 2022 Share Posted September 20, 2022 I've recently come to acquire a collection of various fossils from the Silurian of Gotland. One of the larger specimens is this: My thinking is that this is 100% either a particularly large rugose coral, or an orthocerid. Could use some help. Link to comment Share on other sites More sharing options...
Fossildude19 Posted September 20, 2022 Share Posted September 20, 2022 Looks more like an orthocone cephalopod, to me. 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...
FossilDAWG Posted September 20, 2022 Share Posted September 20, 2022 It's an orthoconic (straight-shelled) nautiloid. You can see septa dividing it into chambers in the last photo. Don 2 1 Link to comment Share on other sites More sharing options...
Manticocerasman Posted September 21, 2022 Share Posted September 21, 2022 I agree with an orthocone 1 growing old is mandatory but growing up is optional. Link to comment Share on other sites More sharing options...
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