Species: advena (HAY, 1908) ZANGERL, 1953
Etymology:
= Protostega advena HAY, 1908
Holotype: KU (VP) 1209
Locality: Either from between Bogue and Hill City, or from Gove County, Kansas.
Horizon: Niobrara Formation.
Biostratigraphy:
Age: Late Cretaceous.
Material: Fragmentary shell.
Referred material:
FMNM PR121:
FMNM PR126: 2 Peripheral bones.
Locality: Martin's Canyon, Kansas.
Horizon: Niobrara Formation.
Biostratigraphy:
Age: Late Cretaceous.
Material:
KU (VP) 1258: Posterior end of the carapace and the middle part of the carapical disk.
Locality: Southeast corner of Lance County, north of Ira King's Ranch, south of Smoky River, Kansas.Horizon: Niobrara Formation.
Biostratigraphy:
Age: Late Cretaceous.
Material:
YPM 3601: Fragmentary shell and skeleton.
Locality: Gove County, Kansas.
Horizon: Niobrara Formation.
Biostratigraphy:
Age: Late Cretaceous.
Material:
YPM 3603: Eleventh peripheral in sutural contact with the pygal and the suprapygal and a small piece belonging to the posterior part of the braincase.
Locality: Locality unknown.
Horizon: Niobrara Formation?
Biostratigraphy:
Age: Late Cretaceous.
Material:
KU (VP) 1219: Nearly complete skull and lower jaw, anterior end of the plastron, along with large portions of the carapace and posterior parts of the plastron.
AMNH 1975, FMNH UR26: Humerii.
FMHM UR25: 2 peripheral bones.
FMHM UR84: A fragmentary specimen.
HOOK, 1998
KUVP 1219, AMNH 1778, FMNH P27397, P27485, PR 171, UR26, UR177, YPM 3603:
SCHWIMMER, 2010
Locality: Dallas County, Alabama.
Horizon: Mooreville Fromation.
Biostratigraphy:
Age: Campanian Stage, Senoniain Subepoch, Gulf Epoch, Late Cretaceous.
Material:
SUMP 2259: Xiphiplastron with tooth marks from Deinosuchus.