Assertion: hammerhead shark's fin | /r/HasProperty | falcate
Facets:
value: strongly
type: DEGREE
value: with concave rear margins
type: OTHER
Source sentences:
text: The first dorsal fin is very tall with a pointed tip and is strongly falcate and recurved in shape while the second dorsal is also high with a strongly concave rear margin (Compagno et al., 2005).
text: The first dorsal fin is distinctive, being very tall and strongly falcate (sickle-shaped), and originates over the insertions of the pectoral fins.
text: The pelvic fins are falcate with concave rear margins, in contrast to the straight-margined pelvic fins of the scalloped hammerhead.