Species: nauta ZANGERL, 1953
Etymology:

Holotype: FMNH P26237

Locality: Devil's Backbone, Saratoga, Howard County, Arkansas.

Horizon: Marlbrook Marl Formation.

Biostratigraphy:

Age: Late Cretaceous.

Material: Partial shell, neurals, peripheral fragments, costals, and fragments of plastron.

Referred material:

FMNH P26238: Partial carapace and plastron.

FMNH PR271: Fragment of plastron.

 

BAIRD & CASE, 1966

Locality: Novak Farm, Lumberton, Burlington County, New Jersey.

Horizon: Navesink Formation, Monmouth Group.

Biostratigraphy:

Age: Middle Maastrichtian Stage, uppermost Senonian subepoch, Gulf Epoch, Late Cretaceous.

Material:

PU 18817: 10th peripheral of carapace.

 

= Prionochelys cf. nauta KRAUSE & BAIRD, 1979

PU 22365

Locality: From an outcrop in the west bank of upper Hohp Brook, about 1/3 mile north of the Roberts Road bridge and 1 mile southeast of Crawford’s Corner, holmdel Township 40’22”30’”N, 74’10”38’”W, Monmouth County, New Jersey.

Horizon: Mount Laurel Formation, Monmouth Group.

Biostratigraphy:

Age: Lower Maaestrichtian, Upper Senonian Subepoch, Upper Gulf Epoch, Late Cretaceous.

Material: Fragment of an isolated pygal

 

ZANGERL, 1953

Locality: Nick Gaiter farm, ca. 1 mile northeast of junction of Okolona-Hollywood road to Arkadelphia, Clark County, Arkansas.

Horizon: Marlbrook Marl.

Biostratigraphy:

Age: Late Cretaceous.

Material:

FMNH P27456: Peripherals and plastral fragment.

FMNH P27461: Partial carapace and skull fragments.

FMNH PR221: Nuchal and first peripheral.

FMNH P17460: Fragmentary specimen.

FMNH P27454: Partial carapace and plastron.

_____________________________________________________________________________________

Species: matutina ZANGERL, 1953
Etymology:
= Prionchelys matuina HIRAYAMA, 1997 (sic)

Holotype: FMNH P27561

Locality: Moore Brothers farm, Harrell Station area, Dallas County, Alabama.

Horizon: Mooreville Chalk, Selma Formation.

Biostratigraphy: Middle Tylosaurus Acme-zone – Clidastes Acme zone.

Age: Niobraran age, Upper Santonian-Lower Campanian Stage, Senoniain Subepoch, Gulf Epoch, Late Cretaceous.

Material: Partial carapace and plastron, elements of pelvis.

Referred material:

Locality: Eutaw area, Greene County, Alabama.

Horizon: Mooreville Chalk, Selma Formation.

Biostratigraphy: Middle Tylosaurus Acme-zone – Clidastes Acme zone.

Age: Niobraran age, Upper Santonian-Lower Campanian Stage, Senoniain Subepoch, Gulf Epoch, Late Cretaceous.

Material:

FMNH PR31: Crushed peripherals.

 

Locality: Harrell Station area, Dallas County, Alabama.

Horizon: Mooreville Chalk, Selma Formation.

Biostratigraphy: Middle Tylosaurus Acme-zone – Clidastes Acme zone.

Age: Niobraran age, Upper Santonian-Lower Campanian Stage, Senoniain Subepoch, Gulf Epoch, Late Cretaceous.

Material:

FMNH P27479: Large peripheral.

FMNH PR222: Nuchal and first peripheral of large individual.

 

Locality: West Greene area, Greene County, Alabama.

Horizon: Mooreville Chalk, Selma Formation.

Biostratigraphy: Middle Tylosaurus Acme-zone – Clidastes Acme zone.

Age: Niobraran age, Upper Santonian-Lower Campanian Stage, Senoniain Subepoch, Gulf Epoch, Late Cretaceous.

Material:

FMNH PR185: Peripherals, pygal, neural, and costal of a juvenile.

 

GENTRY, 2019

Locality: AHl-1, Hale County, Alabama.

Horizon: Mooreville Chalk Formation.

Biostratigraphy:

Age: Niobraran age, Santonian Stage, Senoniain Subepoch, Gulf Epoch, Late Cretaceous.

Material:

MSC 2250: Fragmentary shell.

 

Locality: APn-1, Pickens County, Alabama.

Horizon: Mooreville Chalk Formation.

Biostratigraphy:

Age: Niobraran age, Campanian Stage, Senoniain Subepoch, Gulf Epoch, Late Cretaceous.

Material:

MSC 1540: Fragmentary shell.

 

Locality: ADa-3, Greene County, Alabama.

Horizon: Mooreville Chalk Formation.

Biostratigraphy:

Age: Niobraran age, Campanian Stage, Senoniain Subepoch, Gulf Epoch, Late Cretaceous.

Material:

MSC 38604: Fragmentary shell.

MSC 3140: Fragmentary shell.

 

Locality: AGr-5, Greene County, Alabama.

Horizon: Mooreville Chalk Formation.

Biostratigraphy:

Age: Niobraran age, Campanian Stage, Senoniain Subepoch, Gulf Epoch, Late Cretaceous.

Material:

MSC 1915: Fragmentary shell.

MSC 2045: Fragmentary shell.

MSC 39030: Fragmentary shell.

 

Locality: AGr-7, Greene County, Alabama.

Horizon: Mooreville Chalk Formation.

Biostratigraphy:

Age: Niobraran age, Campanian Stage, Senoniain Subepoch, Gulf Epoch, Late Cretaceous.

Material:

MSC 39013: Fragmentary shell.

MSC 3036: Fragmentary shell.

MSC 1719: Fragmentary shell.

 

Locality: AGr-9, Greene County, Alabama.

Horizon: Mooreville Chalk Formation.

Biostratigraphy:

Age: Niobraran age, Campanian Stage, Senoniain Subepoch, Gulf Epoch, Late Cretaceous.

Material:

MSC 5656: Fragmentary shell.

 

Locality: AGr-17, Greene County, Alabama.

Horizon: Mooreville Chalk Formation.

Biostratigraphy:

Age: Niobraran age, Campanian Stage, Senoniain Subepoch, Gulf Epoch, Late Cretaceous.

Material:

MSC 6086: Fragmentary shell.

 

 

Locality: AGr-27, Greene County, Alabama.

Horizon: Mooreville Chalk Formation.

Biostratigraphy:

Age: Niobraran age, Campanian Stage, Senoniain Subepoch, Gulf Epoch, Late Cretaceous.

Material:

MSC 2610: Fragmentary shell.

 

Locality: AGr-29, Greene County, Alabama.

Horizon: Mooreville Chalk Formation.

Biostratigraphy:

Age: Niobraran age, Campanian Stage, Senoniain Subepoch, Gulf Epoch, Late Cretaceous.

Material:

MSC 2720: Fragmentary shell.

 

Locality: AGr-37, Greene County, Alabama.

Horizon: Mooreville Chalk Formation.

Biostratigraphy:

Age: Niobraran age, Campanian Stage, Senoniain Subepoch, Gulf Epoch, Late Cretaceous.

Material:

MSC 3500: Fragmentary shell.

= Prionochelys galeotergum ZANGERL, 1953
Etymology:

Holotype: FMNH PR125

Locality: Gove County, Kansas.

Horizon: Niobrara Formation.

Biostratigraphy:

Age: Late Cretaceous.

Material: Fragmentary carapace.