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  • Erich Rose posted a new specimen. 2 years, 2 months ago

    2 years, 2 months ago
    2 years, 2 months ago

    Erich Rose has contributed specimen mFeM 57765 to myFOSSIL!

    • Hi, @erich-rose, These are really cool specimens. What is the weird hat like overgrowth covering the apical system? I mostly study Paleozoic creatures and have never come across this.

      I found some nice images on the echinoid database: https://www.nhm.ac.uk/our-science/data/echinoid-directory/taxa/taxon.jsp?id=2352

      I also looked up the lithostratigraphy to get some more information on the geochronological information: https://macrostrat.org/sift/#/strat_name_concept/8370 feel free to add that information in if you want to.

      Talk to you soon,
      Jen

      cc @samantha-ocon

      • Hey Jen,

        That is called the apical cap. In many regular echinoids it includes the periproct (=anus) as well as the genital pores. In many regular echinoids the apical plates get scattered after death and we just see a large opening. But some types feature an apical system that takes the form of a cap-like assembly of plates. The “Salenias” are one of those. They are truly sweet fossils and there is quite a variety of them. I’ll be posting more images of Texas fossils as time allows.

        I am very familiar with the echinoid-directory but not the macrostrat site. Thanks.

        Glad to be part of the group,

        ER

        • That is so fascinating! Thank you for taking the time to explain that to me and I look forward to checking out more of your collection!

          Jen