Assertion: echinoderm | /r/HasProperty | alive
Facets:
value: in the lower cambrian period
type: TEMPORAL
Source sentences:
text: It is estimated that there are up to 13,000 extinct species of echinoderms and that the very first echinoderm was alive in the Lower Cambrian period.
text: The crinoids are very different from the other echinoderms that are alive today.
text: The crinoids are very different from the other echinoderms that are alive today.