Assertion: echinoderm's feature | /r/CapableOf | reflect common evolutionary origin
Facets:
value: within the phylum
type: OTHER
Source sentences:
text: The fates of the various coelomic compartments vary among echinoderms, but some features seem broadly similar and may reflect a common evolutionary origin deep within the phylum: left mesocoel gives rise to most or all of the water vascular system, and one or both somatocoels form the lining of the body cavity.