Bolboporites sp SOLD

Bolboporites It is an extinct genus of conical echinoderms who lived in the Ordovician of Europe and North America. They are interpreted to have lived on the seafloor with the pointed end of the cone down in the sediment and the broad end up. A single brachiole extended from a hole in this upper surface and folded in the current like the arms of crinoids (Rozhnov and Kushlina, 1994). It is likely an eocrinoid that diversified in the Baltic region and then migrated to North America. https://prehistoria.fandom.com/es/wiki/Bolboporites

Eocrinoids are composed of a calyx, a crown of appendages and a peduncle; From the calyx, formed by perforated plates and communicated by a complex system of respiratory pores, quite long and unbranched appendages (brachioles) develop in the upper part. These appendages were responsible for capturing the food and bringing it to the mouth, in a central position.