About: http://webisa.webdatacommons.org/188168419

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	Form of shell, cylindrical, the first three whirls being about equal in diameter, the fourth is a little smaller; then the shell slopes to a blunt point, forming an angle of sixty??-nine degrees.
http://www.w3.org/ns/prov#wasQuotedFrom	si.edu