Species: mangahouangae WIFFEN, 1980
Etymology:
Holotype: "S34-S77"
Locality: N104/1909, stream boundary from bed of Mangohouanga stream, Tributary of Hoe River, midway between bridge and waterfront Grid Reference NZMS 1, sheet N104/Mahnataniwah first edition 261088, North Island, New Zealand.
Horizon: Mangahouanga Stream Site.
Biostratigraphy:
Age: Piripauan-Haumuria, Uppermost Campanian-Lowermost Maastrichtian Stage, Upper Senonian subepoch, Upper Upper Gulf Epoch, Late Cretaceous.
Material: Fragmentary skull, fragmentary dentary, teeth, cervical, dorsal, caudal vertebrae, left humerus, ulna carpal bones, metacarpal bones, and phalanx.
Referred material:
WIFFEN, 1990
Locality: V19/f67, Grid ref. 432475, Mangahouanga Stream, boulder 2 km upstream from forestry road bridge and 100 m below junction of third side creek entering from the northeast, North Island, New Zealand.
Horizon:
Biostratigraphy:
Age: Piripauan-Haumuria, Uppermost Campanian-Lowermost Maastrichtian Stage, Upper Senonian subepoch, Upper Upper Gulf Epoch, Late Cretaceous.
Material:
NZGS, CD532: Anterior part of right mandible with 4 teeth, 1 dorsal and 1 caudal vertebrae, plus fragment, and 1 small rib of a juvenile.
= Prognathodon cf. overtoni WIFFEN 1990
Locality: V19/f69. Grid ref. 440483, Mangahouanga Stream, 1.5 km upstream of third side creek entering from the northeast, and 3.6 km upstream from forestry road bridge, North Island, New Zealand.
Horizon: Maungataniwha Sandstone.
Biostratigraphy:
Age: Piripauan-Haumuria, Uppermost Campanian-Lowermost Maastrichtian Stage, Upper Senonian subepoch, Upper Upper Gulf Epoch, Late Cretaceous.
Material:
NZGS, CD535: Nearly complete skull and dentary.
= Mosasaurus flemingi WIFFEN, 1990
Etymology:Holotype: NZGS, CD350
Locality: V19/f70, Grid ref. 446490, Mangahouanga Stream, boulder 1.5 km upstream of third side creek entering from the northwest and 3.6 km upstream from forestry bridge, North Island, New Zealand.
Horizon: Maungataniwha Sandstone.
Biostratigraphy:
Age: Piripauan-Haumuria, Uppermost Campanian-Lowermost Maastrichtian Stage, Upper Senonian subepoch, Upper Upper Gulf Epoch, Late Cretaceous.
Material: Basioccipitual unit-posterolateral ramus of parietals, squamosals, paraoccipital process, with disarticulated occipital condyle and Incomplete basisphenoid, complete left quadrate, 4 articulated anterior cervical vertebrae, complete with hypapophyseal peduncles and 3 hypapophyses, 1 rib and 1 isolated tooth.
= Rikisaurus tehoensis WIFFEN, 1990
Etymology:Holotype: NZBS, CD531
Locality: V19/f68, Grid ref. 437482, Mangahouanga Stream site, 1.2 km upstream of third side creek entering from the northeast, 3.3 km upstream from forestry road bridge, North Island, New Zealand. Horizon:
Horizon: Maungataniwha Sandstone.
Biostratigraphy:
Age: Piripauan-Haumuria, Uppermost Campanian-Lowermost Maastrichtian Stage, Upper Senonian subepoch, Upper Upper Gulf Epoch, Late Cretaceous.
Material: Skull, dentary and 4 cervical vertebrae.