500-million-year-old fossil reveals how starfish got their shape
A 500-million-year-old fossil from Morocco, discovered by Natural History Museum scientists, is offering extraordinary new insights into one of evolution's most puzzling transformations: how echinoderms, the group that includes starfish, sea cucumbers and sea urchins, evolved from ancestors that showed bilateral symmetry, like humans, to the unique fivefold symmetry we see today.
A 500-million-year-old fossil from Morocco, discovered by Natural History Museum scientists, is offering extraordinary new insights into one of evolution's most puzzling transformations: how echinoderms, the group that includes starfish, sea cucumbers and sea urchins, evolved from ancestors that showed bilateral symmetry, like humans, to the unique fivefold symmetry we see today.
