Species: walkeri PARKS, 1922 (Male)
Etymology: In honor of Sir Byron Edmund Walker, founder of the Royal Ontario Museum and first chairman of the board of trustees.

Holotype: ROM 768 (old GSC 4578)

Locality: Quarry 12, On the middle branch of the coulee below Sand Creek, Red Deer River, elevation of 125 feet (aneroid) above the river, Dinosaur Provincial Park, Newell County, Alberta Province, Canada.

Horizon: Lower Dinosaur Park Formation, upper Judith River Group.

Biostratigraphy:

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

Material: Skull, dentary and skeleton missing lower legs and tail.
Note: Paleopathology, neural spindes of dorsals V, VI and VII are pathologic (LULL & WRIGHT, 1942, BERTOZZO, MANUCCI, DEMPSEY, TANKE, EVANS, RUFFELL & MURPHY, 2020).

Note: With skin impressions.

Drawing of P. walkeri with a corrected dorsal series.

Referred material:

BRETT-SURMAN, 1989

ROM 816 (old 5344), ROM 817 (old GSC 5345):

 

CURRIE & RUSSELL, 2005

Locality: Quarry 084, Dinosaur Provincial Park, Newell County, Alberta Province, Canada.

Horizon: Lower Dinosaur Park Formation, upper Judith River Group.

Biostratigraphy:

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

Material:

UA 300: Fragmentary skeleton.

 

= cf. walkeri

Locality: Quarry 196, Dinosaur Provincial Park, Newell County, Alberta Province, Canada.

Horizon: Lower Dinosaur Park Formation, upper Judith River Group.

Biostratigraphy:

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

Material:

Number: Not given: Fragmentary skeleton.

 

= cf. walkeri

Locality: Quarry 206, Dinosaur Provincial Park, Newell County, Alberta Province, Canada.

Horizon: Lower Dinosaur Park Formation, upper Judith River Group.

Biostratigraphy:

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

Material:

RTMP 92.53.21: Fragmentary skeleton.

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Species: tubicen WIMAN, 1931 (Male)
Etymology: Latin, tuba, “a long, straight trumpet.”

Holotype: PMU.R1250

Locality: UNM locality V-143, De-na-zin Wash, NW 1/4, SW 1/4, T24N, R11W, Barrell Spring Arroyo, one mile south of Ojo Alamo, San Juan County, New Mexico.

Horizon: De-na-zin Member, Lower Kirtland Formation.

Biostratigraphy:

Age: Kirtlandian age, Upper Campanian Stage, Senonian Subepoch, Gulf Epoch, Late Cretaceous.

Material: Fragmentary skull.

Referred material:

SULLIVAN, LUCAS & JASINSKI, 2011

Locality: SMP Locality 319a (east branch of Hunter Wash), Bisti/De-na-zin Wildnerness, San Juan County, New Mexico.

Horizon: De-na-zin Member, Lower Kirtland Formation.

Biostratigraphy:

Age: Kirtlandian age, Upper Campanian Stage, Senonian Subepoch, Gulf Epoch, Late Cretaceous.

Material:

SMP VP-2002: Nearly complete left humerus of a hatchling.

 

SULLIVAN & WILLIAMSON, 1999, WILLIAMSON & SULLIVAN, 1996

 

Locality: NMMNH Loc. 3347, tributary of Hunter Wash, San Juan Basin, New Mexico.

Horizon: De-na-zin Member, Lower Kirtland Formation.

Biostratigraphy:

Age: Kirtlandian age, Upper Campanian Stage, Senonian Subepoch, Gulf Epoch, Late Cretaceous.

Material:

NMMNH P-25100: Fragmentary skull.

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Species: cyrtocristatus OSTROM, 1961 (Female)
Etymology: Greek, kyrt , kyrto , " kyrtos bulging, convex" and Latin, cristatus, "crest."
= Parasaurolophus cyrotocristatus STOKES, 1988 (sic)

Holotype: FNHM P27393

Locality: Near Coal Creek, 8 miles southeast of Tsaya, McKinley County, New Mexico.

Horizon: Fruitland Formation.

Biostratigraphy:

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

Material: Complete cranial crest and dorsal-caudal part of the cranium, fragmentary left dentary, 3 cervical, 11 dorsal, 8 sacral, and 26 caudal vertebrae, both scapulae and humeri, right radius, fragmentary left radius, right ulna, fragmentary left ulna, both ischia, ilia, pubes, femora, and tibiae, left fibula, incomplete right fibula, and numerous ribs, chevrons and phalangeal elements.
Note: Paleopathology, left fibula has a healed fracture.

Top drawing after Ostrom, bottom drawing is after research looking at the skull material. I believe the skull was longer and not similar to P. walkeri.

Parasaurolophus cyrtocristatus (modified from OSTROM, 1961, & SULLIVAN & WILLIAMSON, 1999 and personal observation), Holotype: FNHM P27393.

Referred material:

GATES, 2004,

Locality: Garfield County, Utah.

Horizon: Kaiparowits Formation.

Biostratigraphy:

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

Material:

Numbers: Not given: 2 partial skulls.

 

GATES, EVANS & SERTICH, 2021

Locality: Bisti/Den-Na-Zin Wilderness, San Juan County, nortwestern New Mexico.

Horizon: Fossil Forest Member, Fruitland Formation.

Biostratigraphy:

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

Material:

DMNH EPV.132000: Partial skull composed of posterior portion of premaxillae, complete nasals, right lacrimal, complete skull roof and briancase, partial left dentary, incomplete left surangular and fragmentary ribs.

 

= Parasaurolophus cf. cyrtocristatus

Locality: Grand Staircase-Escalante National Monument, Utah.

Horizon: Kaiparowits Formation.

Biostratigraphy:

Age: Late Campanian, Senonian Subepoch, Gulf Epoch, Late Cretaceous.

Material:

= Parasaurolophus sp GATES, LUND, BOYD, DeBLIEUX, TITUS, EVANS, GETTY, KIRKLAND, & EATON, 2013

UCMP 143270: Fragmentary skull.

Parasaurolophus sp (modified from GATES, et al., 2013), UCMP 143270.

 

MATEER, 1981

Locality: MNA Loc. 230, near Bristi Trading Post, San Juan County, New Mexico.

Horizon: Fruitland Formation.

Biostratigraphy:

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

Material:

MNA Pl. 529: A nearly complete right maxilla, with partial right jugal and incomplete right palatine.

= cf. Parasaurolophus crytocristatus SULLIVAN, 2006

Locality: Bob's Bloody Bluff (north side), SMP locality 401, Ah-Shi-Sle-Pah Wilderness Study Area, San Juan Basin, San Juan County, New Mexico.

Horizon: Fossil Forest Member, Fruitland Formation.

Biostratigraphy:

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

Material:

SMP VP-1619: Incomplete right humerus.

 

WEISHAMPEL & JENSEN, 1979

Locality: Henryville Creek, Garfield County, Utah.

Horizon: Within the lower third of the Kaiparowits Formation.

Biostratigraphy:

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

Material:

BYU 2467: Distal tip and additional proximal fragments of the crest.