Bolboporites is an enigmatic echinoderm fossil from the Ordovician of Europe and North America. It was once thought to be an unusual eocrinoid living on the seafloor with the pointed end of the cone down in the sediment, and a single brachiole extending from a hole in the upper surface.[1] However, a recent re-assessment concluded that it is most likely a spine from an unknown echinoderm, possibly of primitive, non-echinoidechinozoan affinities.[2] It likely diversified in the Baltic region and then migrated to North America.[3]
References
^Rozhnov, S. V. (1994). "Interpretation of new data on Bolboporites Pander, 1830 (Echinodermata; Ordovician)". In David, B.; Guille, A.; Féral, J.-P.; Roux, M. (eds.). Echinoderms through time. Rotterdam: Balkema. pp. 179–180.
^Rozhnov, S. V. (2009). Eocrinoids and paracrinoids of the Baltic Ordovician basin: a biogeographical report. IGCP Meeting, Ordovician palaeogeography and palaeoclimate. Copenhagen. p. 16.
