Cartilaginous fish Although little is known about mating systems in sharks and other cartilaginous fishes, there is evidence that some species such as tiger sharks (Galeocerdo cuvier) could be ...

Later when the researchers examined the fossil through X-ray and CT Scans, it was unveiled that its braincase was akin to that of cartilaginous fishes (or chondrichthyans) which also includes sharks.