Assertion: eurypterid | /r/HasProperty | known to the permic
Facets:
value: from the cambric
type: LOCATION
Source sentences:
text: At any rate, none of the eurypterids now known from the Cambric to the Permic even suggest any fusion of the abdominal segments such as distinguishes Limulus, while in the Devonic Protolumulus eriensis Williams, the abdominal segments are apparently already fused and the characteristic Limulus structure developed.