|Named By:||Wiffen & Moisley in 1986|
|Time Period:||Late Cretaceous, 78 Ma|
|Location:||New Zealand - Tahora Formation|
|Size:||Estimated at 8 meters long|
|Fossil(s):||Based upon an almost complete skull, mandible (lower jaw), and cervical (neck) vertebra. Partial post cranial remains have been attributed to the genus|
|Classification:||| Reptilia | Sauropterygia | Plesiosauria | Elasmosauridae ||
Tuarangisaurus (Maori tuarangi "ancient" + Greek sauros "lizard") is an extinct genus of elasmosaurid known from New Zealand. The type and only known species is T. keyesi, named by Wiffen and Moisley in 1986.