PaleoOrdo Posted August 10, 2020 Share Posted August 10, 2020 I found these two stones in two different places both of them from silur. Anyone can which kind of octopuses it is? Is the round thing a part of the octopus? One of them have visible crystals and which material it is made of? Aragonite? Martin Link to comment Share on other sites More sharing options...
Kane Posted August 10, 2020 Share Posted August 10, 2020 Possibly an orthoconic nautiloid. The earliest octopod would be Pohlsepia mazonensis, which dates to the upper Carboniferous. 2 ...How to Philosophize with a Hammer Link to comment Share on other sites More sharing options...
PaleoOrdo Posted August 10, 2020 Author Share Posted August 10, 2020 I understand. I used th word "OCTOPUS" in an unusual way, meaning the same higher class of animals as including nautiloids and octopod. I guess it is difficult to know which the species it is? Martin Link to comment Share on other sites More sharing options...
Kane Posted August 10, 2020 Share Posted August 10, 2020 Ah, you mean cephalopod. I am not much help in drilling down to genus and species level for this one, but I know we have some keen experts on cephalopods around here that will see this and hopefully chime in! ...How to Philosophize with a Hammer Link to comment Share on other sites More sharing options...
PaleoOrdo Posted August 10, 2020 Author Share Posted August 10, 2020 Thank you very much for introducing the scientific terms on this very interesting animal Kane. I have found several other speciemen from silur and ordovicium which will be posted later. Martin Link to comment Share on other sites More sharing options...
PaleoOrdo Posted May 17, 2021 Author Share Posted May 17, 2021 The first photo, since it show top-rounded cones of the siphuncle, may it be an endocerid? Link to comment Share on other sites More sharing options...
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