Free shipping! These are 3 Hyphalosaurus fossil, the fossil is well preserved. The details are kept beautifully. A group of Hyphalosaurus are extremely rare. The appearance of Hyphalosaurus is similar to that of small Nothosauroidea, which are marine reptiles that became extinct during the Triassic. These similarities are the result of driving the convergent evolution, and it does not mean that they have an evolutionary relationship.