Reposted by Dave Rudkin
One of the greatest stories every told (by the fossil record)
Very cool new paper reveals insight into how starfish & their kin evolved from their bilateral ancestors to the 5-fold symmetry we see today 🧪
cell.com
A new Cambrian stem-group echinoderm reveals the evolution of the anteroposterior axis
Woodgate et al. describe a new bilaterally symmetrical echinoderm, Atlascystis acantha,
from the Cambrian of Morocco. Comparisons of plate growth with other echinoderms reveal
that Atlascystis possess...