Genus: Gryposaurus LAMBE, 1914
Etymology: Greek, grypos, “crokked, hook-nosed”, and Greek, sauros, “lizard”: “Hooked-nosed lizard”.

Species: notabilis LAMBE, 1914
Etymology:

Referred material:

HEATON, 1972

Locality:

Horizon:

Biostratigraphy:

Age:

Material:

ROM 873 (old number 5759): Skull with skin impression on right jugal.

VIALLI, 1960

Locality: Quarry 137, Near Steveville, 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:

Milano Museum Cat. n. V345: Skull and mandible, 8 cervical, 8 dorsal and 40 caudal vertebrae, 5 chevrons, some fragments of dorsal ribs, right and left scapulae, left sternal bone, right and left humeri, right and left ulnae, right radius, left metacarpal I, 6 phalanges of left manus, left pubis and part of right pubis, right and left ischia, both femora, both tibiae, left fibula, left astragalus, left metatarsal II, right metatarsal IV, 5 phalanges of left pes, 3 phalanges of right pes.

Note: With skin impression (BERTOZZO, DAL SASSO, FABBRI, MANUCCI & MAGANUCO, 2018).

Note: Pathologic bones: Predentary, dorsal vertebrae, adn caudal vertebrae (BERTOZZO, DAL SASSO, FABBRI, MANUCCI & MAGANUCO, 2018).

= Kritosaurus incurvimanus PARKS, 1920
Etymology:
= Kritosaurs incruvimanus NAGAO, 1936 (sic)
= Gryposaurus incurvimanus (PARKS, 1920) GATES & SAMPSON, 2007 (as per PRIETO-MARQUEZ, 2010B)

Holotype: ROM 764 (old GSC 4514)

Locality: Sand Hill Creek about 2 1/2 miles above Happy Jack Ferry and 1 mile south of the Red Deer River, near Steveville, Dinosaur Provincial Park, 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: Skull missing snout and skeleton with skin impressions and dermal scutes?

 


= Trachodon marginatus LAMBE, 1902 (nomen dubium; partim)
Etymology:

Holotype: NMC 419

Locality: Near Steveville, Dinosaur Provincial Park, Red Deer River, Alberta Province, Canada, Late Cretaceous.

Horizon: Dinosaur Park Formation, upper Judith River Group.

Biostratigraphy:

Age: Judithian age, Middle Campanian Stage, middle Senonian subepoch, upper Gulf Epoch, Late Cretaceous.

Material: Humerus, ulna, radius, metatarsal, and phalanges of pes, zygapophyses of cervical vertebrae, ribs, fragments of teeth, ossified tendons, impressions of integument, disassociated femora, tibiae, metacarpals, and phalanges of manus, rami of the lower jaw, maxillae with teeth, dorsal and caudal vertebrae, pubis, ischia, ilia, chevrons and teeth.

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Species: monumentensis GATES & SAMPSON, 2007
Etymology: In reference to the Grand Staircase-Escalante National Monument in southern Utah, where all referred material of this species have been recovered.
= Species: Nova GATES & SAMPSON, 2006

Locality: Grand Staircase-Escalante National Monument, south-cental Utah.

Horizon: Kaiparowits Formation.

Biostratigraphy:

Age: Upper Campanian Stage, Upper Senonian subepoch, Upper Upper Gulf Epoch, Late Cretaceous.

Referred material:

UMNH VP 12265: Partial skull and skeleton preserving both maxillae, left dentary, left quadrate, and partial jugal, left humerus, right and left scapulae, right coracoid, multiple ribs, both ilia, pubes, and ischia, most of the dorsal, sacral, and caudal series, including skin impressions on the right side of the vertebral series.


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Species:? alsatei LEHMAN, WICK, & WAGNER, 2016
Etymology: In homage ot Alsate, the legendary renegade last chief of the Chisos apahches (Miles, 1976), and alludes to ths hadrosaur being the last known inhabit Texas prior to the terminal Cretaceous extinction event.

Holotype: TMM 46033-1

Locality: Big Bend National Park, Brewster County, Texas.

Horizon: Upper part of the Javelina Formation.

Biostratigraphy:

Age: Lancian age, Latest Maastrichtian Stage, Upper Senonian Subepoch, Upper Gulf Epoch, Late Cretaceous.

Material: Fragmentary skull including parts of basioccipital, left palatine, left and right frontals, left prefrontal, parts of right premaxilla, left maxilla, right jugal, fragment of left  quadrate, left and right dentaries, left splenial, part of right surangular, and parts of postcranial skeleton including centrum of axis, neural arch of posterior  cervical vertebra, sacral centrum, proximal and distal caudal vertebrae, right humerus, right tibia, right metatarsal II, right metatarsal II, right metatarsal III, right pedal ungual phalanx (digit II), right pubis, 2 dorsal ribs, skin impressions, and other bone fragments of uncertain identy.