About: http://webisa.webdatacommons.org/435491078

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	If we do not admit that the shells and other bodies become changed into marl, it is very difficult to explain the formation of these models???both the internal and external mould being the same substance.
http://www.w3.org/ns/prov#wasQuotedFrom	darwin-online.org.uk