https://theconversation.com/humans-closest-invertebrate-ancestors-date-back-much-further-than-thought-how-we-discovered-the-fossils-that-show-this-279793; https://www.science.org/doi/10.1126/science.adu2291 (abstract only). "Most striking of all, we found the oldest #evidence for the group to which we #humans belong: the deuterostomes. Several of these specimens have a stalk & tentacles, & closely resemble a group of #Cambrian #fossils called cambroernids. These now-extinct #animals are related to living starfish & acorn worms - the closest #invertebrate relatives to humans." See: https://en.wikipedia.org/wiki/Deuterostome.









