Genus: Ginglymostoma, Nurse Sharks
mouth short, tranverse
2 large Ds
C: almost no lower lobe
under snout: 2 barbels
Head broad and flattened; snout broad, rounded; nostrils with large barbels; eyes small, oval, behind the mouth; mouth small, transverse, opens a little under snout; teeth small, multicusped; five small gill arches, last two close together and over pectoral fin; fins blunt and rounded; two large dorsal fins, second dorsal ~½ size of first, base of first one over base of pelvics; tail asymmetrical, lower lobe hardly developed.
This tropical genus contains one species, which occurs in both the eastern Pacific and the eastern and western Atlantic.