Assertion: horseshoe crab | /r/HasProperty | referred for this reason
Facets:
value: often
type: TEMPORAL
value: as being "living fossils
type: OTHER
Source sentences:
text: They have been in existence for over 300 million years and are similar in many respects to the extinct trilobites, alongside which they evolved in shallow seas of the Paleozoic era; for this reason they are often referred to as being "living fossils.