Assertion: eurypterid | /r/HasProperty | active swimmers
Facets:
Source sentences:
text: The mode of life of the eurypterids has thus far been touched upon incidentally in the description of the "swimming feet"; the earlier writers have generally assumed that the eurypterids were active swimmers on account of the structure of these legs which Hall very properly compared with the quite similar swimming organs of the common "lady crab" (Platyonichus ocellatus) of our eastern Atlantic coast.