Hi, @delwin-glasner, I’m not a modern echinoid expert. Let me see if I can tag some folks in.
@ryan-roney @lmccall do y’all have any ideas?
I found some nice images for the genera but not too much on the species.
Laganum: https://www.nhm.ac.uk/our-science/data/echinoid-directory/taxa/taxon.jsp?id=789
Jacksonaster: https://www.nhm.ac.uk/our-science/data/echinoid-directory/taxa/taxon.jsp?id=791