Triassic reptiles had live young The Filey (Yorkshire) Plesiosaur 2002 (part 1) The Filey (Yorkshire) Plesiosaur 2002 (part 2) Antarctic Researchers to Discuss Difficult Recovery of Unique Juvenile Plesiosaur Fossil, from the National Science Foundation, December 6, 2006.
Triassic reptiles had live young The Filey (Yorkshire) Plesiosaur 2002 (part 1) The Filey (Yorkshire) Plesiosaur 2002 (part 2) Antarctic Researchers to Discuss Difficult Recovery of Unique Juvenile Plesiosaur Fossil, from the National Science Foundation, ngày 6 tháng 12 năm 2006.