Assertion: spiny dogfish | /r/HasAspect | lack
Facets:
Source sentences:
text: Spiny dogfish have a large epicaudal lobe in the caudal fin, lack anal fins, and swim using the body and caudal fin in an anguilliform mode of locomotion (Simanek & Thomson, 1977 ; Maia, Wilga & Lauder, 2012 ).