Assertion: atlantic horseshoe crab | /r/HasAspect | no fossil record
Facets:
Source sentences:
text: The Atlantic horseshoe crab itself has no fossil record at all, and the genus Limulus goes back only some 20 million years, not 200 million.
text: However, horseshoe crab preservation in the fossil record is extremely rare and the Atlantic horseshoe crab itself has no fossil record at all.
text: The Atlantic horseshoe crab itself has no fossil record at all, and the genus Limulus goes back only some 20 million years, not 200 million.