Mark Hamill life mask (life cast) Star Wars Mosasaur Plesiosaurus was one of the

Plesiosaurus was one of the first of the "antediluvian reptiles" to be discovered (by Mary Anning)

Covered in dark hair

A pair of large spikes projects backward from the relatively small frill

Cretaceous Montana

Mark Hamill life mask (life cast) Star Wars Mosasaur Plesiosaurus was one of theMark Hammil life mask life cast. Star Wars, Empire Strikes Back, Return of the Jedi Mark Richard Hamill ( hml ; born September 25, 1951) is an American actor, voice actor, and writer. He is best known for playing Luke Skywalker in the Star Wars film series. His other notable film appearances include Corvette Summer (1978) and The Big Red One (1980). Hamill has also appeared on stage in several theater productions, primarily during the 1980s. Lifesize.