Assertion: eurypterid's carapace | /r/HasProperty | two lateral margins
Facets:
Source sentences:
text: The carapace is broadly subtriangular, about one third wider than long (not counting a frontal snoutlike prolongation), the two lateral margins converging at an angle of about 700 toward the anterior end which is produced into a linguiform process, about one fifth the length of the carapace.
text: Carapace semicircular (width of type, 45 mm, length, 30 mm), both frontal and lateral margins forming a continuous curve; posterior margin well preserved in the middle portion only, which is rather strongly concave; genal angles not clearly seen; eyes submarginal, of large size, occupying one fourth the length of the lateral margin, situated behind the middle line of the carapace; visual surface crescent-shaped (in compressed condition); eye surrounded on the outside by a distinct dumbbell shaped depression; ocelli well defined, large and lying between the anterior portions of the lateral eyes.