PaleoOrdo Posted August 16, 2020 Share Posted August 16, 2020 I wonder if this form could be one or two fishes or a rugose coral? The both "fishes" is about 1,5 cm long, from middle ordovicium. Martin Link to comment Share on other sites More sharing options...
Monica Posted August 24, 2020 Share Posted August 24, 2020 If the rock is Ordovician in age, then there won't be any fish fossils found within it. Could they perhaps be longitudinal sections of high-spired gastropods? Link to comment Share on other sites More sharing options...
Kane Posted August 24, 2020 Share Posted August 24, 2020 8 minutes ago, Monica said: If the rock is Ordovician in age, then there won't be any fish fossils found within it. Could they perhaps be longitudinal sections of high-spired gastropods? Actually, the Ordovician saw the emergence of ostracoderms. They would be rare and localized. I agree that this is not likely a jawless fish. 1 ...How to Philosophize with a Hammer Link to comment Share on other sites More sharing options...
JimB88 Posted August 24, 2020 Share Posted August 24, 2020 2 cyrtocone nautoloids in cross section would be my guess. 1 Link to comment Share on other sites More sharing options...
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