Genus: Ctenochelys ZANGERL, 1953
Etymology:

Species: stenopora (HAY, 1905) ZANGERL, 1953
Etymology:
= Toxochelys stenoporus HAY, 1905
= Toxochelys stenopora (HAY, 1905)

Holotype: KUVP 2060

Locality: Exact locality unknown, Gove County, Kansas.

Horizon: Niobrara Formation.

Biostratigraphy:

Age: Senonian Subepoch, Gulf Epoch, Late Cretaceous.

Material: Fragmentary skull, mandible, dentary, hypoplastron, xiphiplastron, left hyoplastron, marginalia, nuchal and limb elements.

Referred material:

KARL & NYHUIS, 2012

Locality: Alsen Quarry, Lägerdorf near Itzehoe,UTM 9°34'18.48"E, 53°52'36.30"N, Schleswig-Holstein State, northwest Germany.

Horizon: Lägerdorf Formation.

Biostraitgraphy:

Age: Upper Santonian to Lower Campanian Stage, Senonian Subepoch, Gulf Epoch, Late Cretaceous.

Material:

BGR-LBEG leg. and coll. Mosbach, 1915 (old number inv. Geol. S. Gr.A24 n.°8): Mandible, skull fragments, scpaula fragment, pelvis remains and nuchal.

MATZKE, 2007

Locality:

Horizon: Niobrara Formation.

Biostratigraphy:

Age: Late Cretaceous.

Material:

USNM 357166: Skull, carapace, plastron and cervical vertebrae of a juvenile.

USNM 393920: Complete wellpreserved adult skull.

 

= Toxochelys serrifer CASE, 1898 non COPE, 1898
Etymology:
= Ctenochelys stenoporus HAY, 1905

Locality: Unknown, Kansas.

Horizon: Niobrara Formation.

Biostratigraphy:

Age: Senonian Subepoch, Gulf Epoch, Late Cretaceous.

Material:

KU (VP): 1205: Skull, peripherals, and hyoplastron, hypo- and xiphiplastra, neurals, suprapygal and costal plates.

Referred material:

YPM 3607:

FMNH UR2:

 

Locality: Butte Creek, Logan County, Kansas.

Horizon: Niobrara Formation.

Biostratigraphy:

Age: Late Cretaceous.

Material:

USNM 6013: Fragmentary shell.


= Toxochelys sp HAY, 1908
= Ctenochelys stenopora ZANGERL, 1953 (error)

Locality: Near Monument Rock, Gove County, Kansas.

Horizon: Niobrara Formation.

Biostratigraphy:

Age: Santonian or Campanian Stage, Senonian Subepoch, Gulf Epoch, Late Cretaceous.

Material:

KU (VP): 1228: Fifteen marginalia, fragments of costals, and a series of neuralia, including two suprapygals.

Referred material:

Locality: 2 miles south of Russell Springs, Kansas.

Horizon: Niobrara Formation.

Biostratigraphy:

Age: Late Cretaceous.

Material:

USNM 12009: Isolates mandible.


= Toxochelys bauri WIELAND, 1905
Etymology:

YPM 1786 (YPM 2823?)

Locality: Monument Rocks, Grove County, Kansas.

Horizon: Niobrara Formation.

Biostratigraphy:

Age: Late Cretaceous.

Material: Fragmentary shell.

 

= Toxochelys procax HAY, 1905
Etymology:
= Ctenochelys procax ZANGERL, 1953

Holotype: AMNH 234

Locality: Along the Smoky Hill River, Kansas.

Horizon: Niobrara Formation.

Biostratigraphy:

Age: Late Cretaceous.

Material: Fragmentary skull.

Referred material:

ZANGERL 1953

CHMN UC614 (Formerly UC572): Skull and mandible.

 

= Toxochelys elkaden HAY, 1905
Etymology:

Holotype: AMNH 6137

Locality: Near Elkader, Logan County, Kansas.

Horizon: Niobrara Formation.

Biostratigraphy:

Age: Late Cretaceous.

Material: Skull and mandible.

_____________________________________________________________________________________

Species: tenuitesta ZANGERL, 1953
Etymology:

Holotype: FMNH P27361

Locality: Moore Brothers farm, Harrel 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, girdle elements, limb-bones and vertebrae.

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 PR30: Partial skull roof, braincase and part of snout.

 

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 P27354: Partial shell.

FMNH PR95: Peripheral bones.

FMNH P27404: Pygal, and peripherls.

FMNH P27362: Partial shell, humerus and nuerals.

FMNH P27557: Hypoplastron and xiphiplastron.

FMNH P27551: Hyoplastron.

FMNH P27357, PR209, P27481, P27360, P27429: Peripherals.

FMNH P27552: Shell fragments.

FMNH P27563: Pelvis, peripherals and neurals.

FMNH P27548: Partial carapace and pelvis.

FMNH PR248: Costals, neurals, peripherals, partial plastron, humerus and vertebrae.

FMNH P27341: Mandible.

FMNH P27431: Peripherals and coarcoid.

FMNH P27402: Snout fragment, parietals, mandible.

FMNH P27339: Snout fragment and mandible.

FMNH P27558: Peripherals, neurals and vertebrae.

FMNH P27559, PR96: Shell Fragments.

 


Locality: Cedarville area, Hale 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 P27316: Partial carapace.

 

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 PR161: Posterior rim of carapace.

FMNH PR252: Xiphiplastra, peripherals, humerus and scapula.

FMNH PR258: Mandible, skull fragments, peripherals and partial plastron.

 

Locality: Mt. Hebron 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 PR180: Peripheral.

FMNH PR24: Costals, peripherals, suprapygal, and pygal.

FMNH PR27, PR57: Peripherals.

FMNH PR25: Poorly preserved and partial carapace.

_____________________________________________________________________________________

Species: arcis ZANGERL, 1953
Etymology:

Holotype: FMNH P27354

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 plastral fragments.

Referred material:

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 P27437: Partial carapace.

FMNH P27344: Costal and peripheral.

FMNH P27337: Partial skull and mandible.

FMNH P27340: Partial skull.

FMNH PR137: Eighth cervical vertebra and girdle bones.

FMNH P27352: Vertebrae and limb-bones.

 

Locality: Cedarville area, Hale 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 PR27356: Hyoplastron, xiphiplastron, neural, peripheral and costal of a juvenile (Crawford farm).

FMNH P27366: Mandible, fragments of limb-bones (Twp. 11, west of Alabama Highway 13)

 

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 PR251: Partial skull.

FMNH PR157: Left mandibular ramus.

 

Locality: Mt. Hebron 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 PR97: Partial shell, vertebrae and mandible.

FMNH PR62: Partial carapace.