About: http://webisa.webdatacommons.org/260916030

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	By the end of the Silurian period about 416 million years ago, predatory invertebrates such as scorpions and spiders were feeding on the earlier colonists of land.
http://www.w3.org/ns/prov#wasQuotedFrom	eurekalert.org