Nipponites Posted April 17, 2022 Share Posted April 17, 2022 Hello, I have bought this ammonite, only knowing that it is from Montreuil-Bellay, France. To me it looks like Perisphinctes virguloides, but I am not sure, any ideas? After examining it nearly, I noticed a hole, that looks to perfect to have been made. What do you think about it? Ruler is in cm. Thanks! Link to comment Share on other sites More sharing options...
Randyw Posted April 17, 2022 Share Posted April 17, 2022 Hmmmm. I was just reading about a mark that looks exactly like that in “ the fossil record of predation” let me see if i can find it again…. Link to comment Share on other sites More sharing options...
Randyw Posted April 17, 2022 Share Posted April 17, 2022 The paper mentioned incomplete bore holes having a raised center like that but didnt mention a culprit. Then theres this from a bhi paper 1 1 Link to comment Share on other sites More sharing options...
Ludwigia Posted April 17, 2022 Share Posted April 17, 2022 Yes, I was also thinking epibiont as I saw this. I don't think that this is a bite mark, since it's too isolated. 1 1 Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
Nipponites Posted April 17, 2022 Author Share Posted April 17, 2022 Thank you both, I will try to find a paper where ammonites epibionts are described. Link to comment Share on other sites More sharing options...
abyssunder Posted April 17, 2022 Share Posted April 17, 2022 Maybe it's a blister pearl. Baets2021_Chapter_EvolutionaryHistoryOfCephalopo.pdf 1 1 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...
Nipponites Posted April 17, 2022 Author Share Posted April 17, 2022 An interesting point of view, I will investigate more in the matter. Link to comment Share on other sites More sharing options...
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