The existence of cartilaginous sternal ribs in Inia and Platanista shows affinity between these two genera and the Physeteridae.
The stem is cartilaginous and continuous with the pileus, but of a different texture.
Inside each of the visceral processes on either side a cartilaginous rod develops.
The endoskeleton is cartilaginous and true bone is never found.
The coagula were numerous, and the superficial ones, quite hard and cartilaginous.
In this layer the development of cartilaginous elements has taken place.
The cartilaginous rod of the second arch segments like the first into three pieces.
The cartilaginous spiral is sometimes cylindrical and sometimes flat.
From their organization the fishes of this order establish the passage from cartilaginous to the osseous fishes.
Tongue long, extensible, terminated by cartilaginous fibres.
cartilaginous car·ti·lag·i·nous (kär'tl-āj'ə-nəs)
Having a skeleton consisting primarily of cartilage.
Having the texture of cartilage.