Species: maximus BROWN, 1916
Etymology: Latin, maximus, "greatest."
= Saurolophus maximus (BROWN, 1916) [Anonymous: In Encyclopedia of Dinosaurs, Publications International], 1990

Holotype: AMNH 5386

Locality: Quarry unknown, on the North fork of Sand Creek, 12 miles below Steveville, Dinosaur Provincial Park, Red Deer River, Newell County, Alberta Province, Canada.

Horizon: 100 feet below top of beds, Dinosaur Park Formation, upper Judith River Group.

Biostratigraphy:

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

Material: Fragmentary skull and fragmentary dentary.

Prosaurolophus maximus after BROWN, 1916, Holotype: AMNH 5386,

Prosaurolophus maximus modifed from BROWN, 1916, Holotype: AMNH 5386,

Referred material:

BRETT-SURMAN, 1989

Locality:

Horizon:

Biostratigraphy:

Age:

Material:

ROM 786 (Old GSC 4963):

 

Locality: Quarry 004a, Dinosaur Provincial Park, Newell County, Alberta Province, Canada.

Horizon: Middle to Upper Dinosaur Park Formation, upper Judith River Group.

Biostratigraphy:

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

Material:

ROM 787 (Old GSC 4971[part at Museo La Plata, Argentina as 79-XI-23-1]): Skull and skeleton.
Note: Paleopathology, 6 dorsal ribs broken in a near straight line about ¾’s the way distal to the rib head.

 

CURRIE & RUSSELL, 2005

Locality: Quarry 046, Dinosaur Provincial Park, Newell County, Alberta Province, Canada.

Horizon: Middle to Upper Dinosaur Park Formation, upper Judith River Group.

Biostratigraphy:

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

Material:

USNM 12712: Skull and fragmentary skeleton.

USNM 12712 after LULL & WRIGHT, 1942.

 

Locality: Quarry 208, Dinosaur Provincial Park, Newell County, Alberta Province, Canada.

Horizon: Middle to Upper Dinosaur Park Formation, upper Judith River Group.

Biostratigraphy:

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

Material:

RTMP 1989.16.923: Fragmentary skeleton.

 

Locality: Quarry 213, Dinosaur Provincial Park, Newell County, Alberta Province, Canada.

Horizon: Middle to Upper Dinosaur Park Formation, upper Judith River Group.

Biostratigraphy:

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

Material:

RTMP 1993.81.1: Skull and skeleton.

 

DRYSDALE, THERRIEN, ZELENITSKY, WEISHAMPEL & EVANS, 2018

Locality:

Horizon:

Biostratigraphy:

Age:

Material:

RTMP 2006.12.96, RTMP 1981.23.140:

 

Locality: Mine 1A locality of Korite International (Ammolite), near Lethbridge, Lethbridge County, Southeastern Alberta Province, Canada.

Horizon: Bearpaw Formation.

Biostratigraphy:

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

Material:

RTMP 2016.37.1: Fragmentary skull and fragmentary skeleton.

 

 

EVANS, McGARRITY, & RYAN, 2014

Locality: Sage Creek Grazing Reserved, approximately 10 km north of the Onefour Research Station, Cypress County, southern 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:

RTMP 1990.045.0001: Incomplete skull.

 

HORNER, 1992

Locality:

Horizon:

Biostratigraphy:

Age:

Material:

ROM 8971:

Locality: Quarry 192, Dinosaur Provincial Park, Newell County, Alberta Province, Canada.

Horizon: Middle to Upper Dinosaur Park Formation, upper Judith River Group.

Biostratigraphy:

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

Material:

RTMP PC 1984.1.1: Skull and skeleton.

LULL & WRIGHT, 1942

Locality: From southeast of the mouth of Little Sandhill Creek, near Steveville, Red Deer River, Alberta Province, Canada.

Horizon: Middle to Upper Dinosaur Park Formation, upper Judith River Group.

Biostratigraphy:

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

Material:

NMC 2870: Skull.

 

Locality: Quarry 086, from the southeast of the mouth of Little Sandhill Creek, near Steveville, Red Deer River, Dinosaur Provincial Park, Newell County, Alberta Province, Canada.

Horizon: Middle to Upper Dinosaur Park Formation, upper Judith River Group.

Biostratigraphy:

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

Material:

CMN (NMC) 2277: Skull.

 

Locality: 6 miles south of Steveville, Dinosaur Provincial Park, Red Deer River, Newell County, Alberta Province, Canada.

Horizon: Middle to Upper Dinosaur Park Formation, upper Judith River Group.

Biostratigraphy:

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

Material:

USNM 12714: Skull and jaws.

 

McKELLAR, JONES, ENGEL, TAPPERT, WOLFE, MUEHLENBACHS, COCKX, KOPPELHUS & CURRIE, 2019

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

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

Biostratigraphy:

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

Material:

UALVP 53367: Dentary.

Note: With a piece of amber associated with the dentary.

 

 

OSTROM, 1961

Locality: Quarry 114, Dinosaur Provincial Park, Newell County, Alberta Province, Canada.

Horizon: Middle to Upper Dinosaur Park Formation, upper Judith River Group.

Biostratigraphy:

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

Material:

ROM 1928: Skull and skeleton.

Locality: Quarry 116, Dinosaur Provincial Park, Newell County, Alberta Province, Canada.

Horizon: Middle to Upper Dinosaur Park Formation, upper Judith River Group.

Biostratigraphy:

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

Material:

TMM 41262 (Formerly ROM 1929): Skull and fragmentary skeleton.

 

PARKS, 1924

Locality: Near Steveville, Red Deer River, Dinosaur Provincial Park, Newell County, Alberta Province, Canada.

Horizon: Middle to Upper Dinosaur Park Formation, upper Judith River Group.

Biostratigraphy:

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

Material:

ROM 4971: Skull and skeleton.

 

= Prosaurolophus cf. maximus PIERCE, 2002, DRYSDALE, THERRIEN, ZELENITSKY, WEISHAMPEL & EVANS, 2018

Locality: Unknown near Manyberries, Forty Mile County, Alberta Province, Canada.

Horizon: Bearpaw Formation.

Biostratigraphy:

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

Material:

RTMP 1983.64.3: Partial skull and skeleton of a juvenile.
Note: Marine deposit.

 

= Prosaurolophus cf. maximus

Locality: St. Mary River on the Deerfield Huntterite coloney, near Magrath, St. Mary’s River Valley near Welling, Cardston County, Alberta Province, Canada.

Horizon: Bearpaw Formation.

Biostratigraphy:

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

Material:

RTMP 1998.501: Partial skull and skeleton of a juvenile.
Note: Marine deposit.
Note: Skin impression.

= Prosaurolophus blackfeetensis HORNER, 1992
Etymology: Blackfeetensis in honor of the Blackfeet Nation, upon whose land the holotype specimen was collected.

Holotype: MOR 454

Locality: MOR TM-041, Landslide Butte, Glacier County, Montana.

Horizon: Upper Two Medicine Formation.
Note: Equivalent to the Middle to Upper Dinosaur Park Formation.

Biostratigraphy:

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

Material: Partial skull and skeleton.

Predentary, dorsal and ventral view.

Referred material:

MOR 447: Portions of numerous skulls and skeletons.

Note: in ROGERS, 1992

MOR 454/SSQ-86: Humerus with a boring in medial epicondyle.

MOR 447/6-14-7-25: Prefrontal with boring.

 

VARRICCHIO, 1995

Locality: Jack’s Birthday Site, located along Badger Creek, within the Blackfeet Indian Reservation, Museum of Rockies locality number TM-068, Sec. 11, T31N, R8W, Glacier County, Montana.

Horizon: Upper Two Medicine Formation.
Note: Equivalent to the Middle to Upper Dinosaur Park Formation.

Biostratigraphy:

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

Material:

MOR 553: In part, portions of numerous cranial and postcranial elements.