Mosasaurs gave birth to live offspring..
(Aotearoa has a long long history of Ocean Life.)
Some 140 years ago, Thomas Hood Cockburn Hood discovered the fossilised bones of a plesiosaur in the Waipara River, North Canterbury. Hood returned to this area some ten years later (1869) and made a fresh discovery of mosasaur fossils, and uncovered more plesiosaur remains. The preservation of any fossil, together with it’s discovery by fossil workers, is an exceptional and rare event under the best of circumstances. Even if one were to discount the odds against the recovery of fossil remains, New Zealand’s marine reptilian fossils are remarkable in many ways