Genus: Axestemys HAY, 1908
Etymology:
Species: splendidus (HAY, 1908) VITEK, 2012
Etymology:
= Aspideretes splendidus HAY, 1908
= Trionyx (Aspideretes) splendidus (HAY,
1908) HUMMEL, 1929
= Trionyx splendidus (HAY, 1908) KUHN, 1964
= Aspideretoides splendidus (HAY,
1908) GARDNER, RUSSELL, & BRINKMAN, 1995
= Eugenichelys splendidus (HAY, 1908) CHKHIKVADZE, 2000
Holotype: AMNH 3952
Locality: Dinosaur Provincial Park, Red Deer River, Newell County, Alberta
Province, Canada.
Horizon: Dinosaur Park Formation, upper Judith River Group.
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper
Gulf Epoch, Late Cretaceous.
Material: Incomplete and fragmentary carapace.
Referred material:
Locality: Wheatland County, Montana.
Horizon: Judith River Formation.
Biostratigraphy:
Age: Judithian age, Campanian Stage, Senonian subepoch, Upper Gulf epoch,
Late Cretaceous.
Material:
ANSP 17090, 17195, 17204, 17311, 17408, 17411: Carapaces.
ANSP 17222: Hypoplastron.
ANSP 17227, 17229, 17231: Hyoplastra.
ANSP 17232: Hypoplastron.
ANSP 17234, 17310: Hyoplastra.
Locality: Golden Valley County, Montana.
Horizon: Judith River Formation.
Biostratigraphy:
Age: Judithian age, Campanian Stage, Senonian subepoch, Upper Gulf epoch,
Late Cretaceous.
Material:
ANSP 17910: Hyoplastron.
Locality: Dinosaur Provincial Park, Red Deer River, Newell County, Alberta
Province, Canada.
Horizon: Dinosaur Park Formation, upper Judith River Group.
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper
Gulf Epoch, Late Cretaceous.
Material:
NMC 1400, RTMP 76.7.2, 80.16.44, UALVP 33390: Carapaces.
ROM 1430: Skeleton lacking skull.
RTMP 85.36.347, 90.59.15: Xiphiplastron.
RTMP 87.36.399: Dentaries.
RTMP 90.59.01, UALVP 5000: Skull.
RTMP 91.50.112: Lower Jaws.
RTMP 92.61.01: Maxilla.
Locality: Onefour, Cypress County, Alberta Province, Canada.
Horizon: Judith River Formation, Judith River Group.
Biostratigraphy:
Age: Judithian age, Campanian Stage, Senonian subepoch, Upper Gulf epoch,
Late Cretaceous.
Material:
RTMP 89.116.60: Fragmentary skeleton.
Locality: Whiterock Coulee, Cypress County, Alberta Province, Canada.
Horizon: Judith River Formation, Judith River Group.
Biostratigraphy:
Age: Judithian age, Campanian Stage, Senonian subepoch, Upper Gulf epoch,
Late Cretaceous.
Material:
RTMP 90.5.79: Hypoplastron.
= cf. Axestemys splendida ARBOUR, ZANNO, LARSON, EVANS, & SUES, 2016
Locality: Harding County, South Dakota.
Horizon: Hell Creek Formation.
Biostratigraphy:
Age: Lancian age, upper Maastrichtian Stage, uppermost
Senonian subepoch, Upper Gulf Epoch, Late Cretaceous.
Material:
Dakotoraptor steini holotype material and referred material
(DePALMAN, BURNHAM, MARTIN, LARSON, & BAKKER, 2015)
PBMNH.P.10.113.T: furcula.
Referred material:
KUVP 152429 (gracile morphotype): Furcula.
NCSM 13170: Isoalted furcula.
Note: ARBOUR, ZANNO, LARSON, EVANS, & SUES, 2016 refer the
furcula to the entoplastron of the trionychid turtle cf. Axestemys
splendida.
ROLLOT, LYSON & JOYCE, 2018
Locality: 'Big Turtle Cove Locality (DMNH locality 6303), northwest of the town of Marmarth, Slope County, North Dakota.
Horizon: Hell Creek Formation.
Biostratigraphy:
Age: Lancian age, upper Maastrichtian Stage, uppermost Senonian subepoch,
Upper Gulf Epoch, Late Cretaceous.
Material:
Number: Not given:
VITEK, 2012
Locality: Turtle Ridge Locality, Slope County, North Dakota.
hroizon: Hell Creek Formation.
Biostratigraphy:
Age: Lancian age, upper Maastrichtian Stage, uppermost Senonian subepoch,
Upper Gulf Epoch, Late Cretaceous.
Material:
MRF 266: Skull.
Locality: Big Turtle Cove Locality, Slope County, North Dakota.
hroizon: Hell Creek Formation.
Biostratigraphy:
Age: Lancian age, upper Maastrichtian Stage, uppermost Senonian subepoch,
Upper Gulf Epoch, Late Cretaceous.
Material:
MRF 567, 675, 678: Hyoplastron.
MRF 586, 661: Femur.
MRF 631: Costal.
MRF 654, 676: Costal.
MRF 699: Partial pectoral girdle.
MRF 700: Preneural.
MRF 834-835: Partial carapace and complete right hyplastron and hypoplastron.
MRF 849: Partial carapace and dentary.
Note: MRF 567, 621, 654, 676, 676, 699-700, 849 probably all belong to one
individual.
MRF 586, 661, 666, 678, 834-835, probably belong to one individual.
= Aspideretes granifer HAY, 1909
Etymology:
= Trionyx granifer (HAY, 1909) HUMMEL,
1929
Holotype: USNM 5736
Locality: Cow Island, Fergus County, Montana.
Horizon: Judith River Formation, Judith River Group.
Biostratigraphy:
Age: Judithian age, Campanian Stage, Senonian subepoch, Upper Gulf epoch,
Late Cretaceous.
Material: Costal and other carapace fragments. .
= Aspideretes planus PARKS, 1933
Etymology:
= Trionyx planus (PARKS, 1933) RUSSELL, 1934
= Trionyx planoides (PARKS, 1933) KUHN, 1964
= Aspideretes planoides KUHN, 1964
Holotype: ROM 815
Locality: Dinosaur Provincial Park, Red Deer River, Newell County, Alberta
Province, Canada.
Horizon: Dinosaur Park Formation, upper Judith River Group.
Biostratigraphy:
Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper
Gulf Epoch, Late Cretaceous.
Material: Carapace.
_____________________________________________________________________________________
Species: riabinini KUSNETZOV & CKHIKVADZE, 1987
Etymology:
Referred material:
KORDIKOVA, GUNNELL, POLLY & KOVRIZHNYKH, 1996
Locality: Baybishe, Kazakhstan.
Horizon: Bostobe Formation.
Biostratigraphy:
Age: Santonian, Senonian subepoch, Upper Gulf epoch, Late Cretaceous.
Material:
Number: Not given:
Locality: Buroynak, Kazakhstan.
Horizon: Bostobe Formation.
Biostratigraphy:
Age: Santonian, Senonian subepoch, Upper Gulf epoch, Late Cretaceous.
Material:
Number: Not given:
Locality: Shakh-Shakh, Kazakhstan.
Horizon: Bostobe Formation.
Biostratigraphy:
Age: Santonian, Senonian subepoch, Upper Gulf epoch, Late Cretaceous.
Material:
Number: Not given:
_____________________________________________________________________________________
Species: infernalis JOYCE, BRINKMAN & LYSON, 2019
Etymology: Latin, infernalis, "hellish," in reference to the Hell Creek Formation.
Holotype: DMNH 13100
Locality: Big Turtle Cove Locality, Slope County, North Dakota.
hroizon: Hell Creek Formation.
Biostratigraphy:
Age: Lancian age, upper Maastrichtian Stage, uppermost Senonian subepoch,
Upper Gulf Epoch, Late Cretaceous.
Material: A near-complete carapace.
Referred material:
DMNH 13042: Dorsal vertebra.
DMNH 130943: Right patial scapulocoracoid.
DMNH 13045: Postrior two thirds of a carpace, Right humerus.
DMNH 20946: Left femur.
DMNH 130947: Ungual phalanx.
DMNH 130948: Neural.
DMNH 130949: Preneural.
DMNH 130950: Right femur.
DMNH 130951: Cranium.
DMNH 130953: Mandible, left humerus..
DMNH 130954: Left hyo/hypoplastron.
DMNH 130955: Right pelvis.
DMNH 130956: Right hyoplastron.
DMNH 130957; Costal.
DMNH 130958: Costal VI.
DMNH 130959: Right hyoplastron.
DMNH 130953: Left hyoplastron.
DMNH 130964: Right hyoplastron.
DMNH 97093: A nearly complete carapace.
Locality: Turtle Bonebed, Slope County, North Dakota.
Horizon: Hell Creek Formation.
Biostratigraphy:
Age: Lancian age, upper Maastrichtian Stage, uppermost Senonian subepoch,
Upper Gulf Epoch, Late Cretaceous.
Material:
RTMP 2009.24.4:Carapace.
RTMP 2009.24.10: Carapace.
RTMP 2009.24.16: Right epiplastron.
RTMP 2008.24.42: Left xiphiplastron.
RTMP 2009.24.43: Right xiphilastron.
RTMP 2009.24.44: Right hyo/hyplastron.
RTMP 2008.24.46: Right xiphiplastron.
RTMP 2009.24.47: Right xiphiplatron.
RTMP 2009.24.48: Left hyo/hypoplastron.
RTMP 2009.24.51: Left epiplastron, and entoplastron.
RTMP 2009.24.51: Entoplastron.
RTMP 2009.24.54: Right xiphiplastron.
RTMP 2009.24.55: Right xiphiplastron.
RTMP 2009.24.56: Entoplastron.
RTMP 2009.24.72: Right epiplastron.
RTMP 2009.24.73: Right epiplastron.
RTMP 2009.24.75: Right epiplastron.
RTMP 2009.24.80: Right xiphiplastron.
RTMP 2009.24.81: Left xiphiplastron.
RTMP 2009.24.93: Left hyoplastron.
RTMP 2009.24.95: Left hyo/hypoplastron.
RTMP 2009.24.97: Right hyplastron.
RTMP 2009.24.98: Right hyo/phpoplastron.
RTMP 2009.24.101: Right hyo/hypoplastron.
RTMP 2009.24.105: A partial carapace.RTMP 2009.24.125: Right xiphiplastron.
RTMP 2009.24.237: Carapace.
Locality: Turtle Ridge, Slope County, North Dakota.
hroizon: Hell Creek Formation.
Biostratigraphy:
Age: Lancian age, upper Maastrichtian Stage, uppermost Senonian subepoch,
Upper Gulf Epoch, Late Cretaceous.
Material:
DMNH 97027: Anterior portion of crapace.
DMNH 97038: Right hyo/hypoplastron.
DMNH 98814: A partial cranium.
DMNH 9883: Left hyoplastron.
DMNH 98890: Parts of left costal I and II.
DMNH 98825: A nuchal.
DMNH 98831: Right costal V.
DMNH 97037: Anterior portions of a carapace.
Loclaity: Turtle Graveyard, Slope County, North Dakota.
hroizon: Hell Creek Formation.
Biostratigraphy:
Age: Lancian age, upper Maastrichtian Stage, uppermost Senonian subepoch,
Upper Gulf Epoch, Late Cretaceous.
Material:
DMNH 96928: Partial mandible.
DMNH 96956: Right costal IV.
DMNH 97021: Nuchal.
DMNH 125911: Left costal IV.
DMNH 125912: Partial entoplastron.
DMNH 125913: Right xiphiplastron.
DMNH 125914: Left xiphiplastron.
DMNH 125919: Left hypoplastron.
DMNH 130927: Right hyo/hypoplastron.
DMNH 130929: Left hyoplastron.
DMNH 130931: Anterior portion of a carpace.
DMNH 130932: Right costal V.
DMNH 130934: Right costal IV.
DMNH 130935: Right costal VI and VII.
Locality: Makoshika State Park, Dawson, County, Montana.
Horizon: Hell Creek Formation.
Biostratigraphy:
Age: Lancian age, upper Maastrichtian Stage, uppermost Senonian subepoch,
Upper Gulf Epoch, Late Cretaceous.
Material:
AMNH 14149: Partial carapace.
Locality: Unknown, Garield County, Montana.
hroizon: Hell Creek Formation.
Biostratigraphy:
Age: Lancian age, upper Maastrichtian Stage, uppermost Senonian subepoch,
Upper Gulf Epoch, Late Cretaceous.
Material:
LACM 15432: Fragmentay shell.
Locality: McCone County, Montana.
hroizon: Upper Third of the Hell Creek Formation.
Biostratigraphy:
Age: Lancian age, upper Maastrichtian Stage, uppermost Senonian subepoch,
Upper Gulf Epoch, Late Cretaceous.
Material:
RMA 9393: Carapace.
Locality: Sandy Site, Harding County, South Dakota.
hroizon: Hell Creek Formation.
Biostratigraphy:
Age: Lancian age, upper Maastrichtian Stage, uppermost Senonian subepoch,
Upper Gulf Epoch, Late Cretaceous.
Material:
NSM PV24644: Right epiplastron.
NSM PV24645: Right hyoplastron.
NSM PV24646: Right hypoplastron.
NSM PV24647: Right xiphiplastron.
NSM PV24648: Left xiphiplastron.
NSM PV 24649: Right hyoplasron.
NSM PV24650: Skull.
Locality: W. of Warren, Niobrara County, Wyoming.
hroizon: Lance Formation.
Biostratigraphy:
Age: Lancian age, upper Maastrichtian Stage, uppermost Senonian subepoch,
Upper Gulf Epoch, Late Cretaceous.
Material:
FHSM VP200: Fragmentary carapace, left hyo/plastron, right xiphiplastron, and left xiphiplastron.