Species: makelai HORNER & WEISHAMPEL, 1988
Etymology: In honor of John Makela.

Holotype: MOR 294

Locality: Egg Mountain site, Willow Creek Anticline, Teton County, Montana.

Horizon: Two Medicine Formation.

Biostratigraphy:

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

Material: Virtually complete skull and skeleton missing the tail.

After SCHETTZ, 1999 via NORMAN, SUES, WITMER & CORIA, 2004

Referred material:

MOR 331: Skeleton.

MOR 248: Skull and skeleton.

MOR 403: Braincase.

PU 22412: Hind legs.

 

GALTON, 1995/ESTES, BERBERIAN & MESZOELY, 1969

Locality: Montana.

Horizon: Hell Creek Formation.

Biostratigraphy:

Age: Lancian age, upper Maastrichtian Stage, uppermost Senonian subepoch, Upper Gulf Epoch, Late Cretaceous.

Material:

Number: Not given: Tooth.

Note: Originally referred to Pachycephalosauridae, then to Fabrosauridae.

 

HAGER, 1993

Locality: Joe’s Juvenile Site, Choetau, Teton County, Montana.

Horizon: Judith River Formation.

Biostratigraphy:

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

Material:

Number: Not given: A juvenile partial skeleton.

 

HORNER, 1988

Locality: 12 miles west of Choteau, on the James and John Peebles Ranch, Upper Maiasaura nesting Ground, Willow Creek Anticline, Teton County, Montana.

Horizon: Two Medicine Formation.

Biostratigraphy:

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

Material:

Number: Not given:

 

Locality: Maisaura bonebed, 12 miles west of Choteau, on the James and John Peebles Ranch, Willow Creek Anticline, Teton County, Montana.

Horizon: Two Medicine Formation.

Biostratigraphy:

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

Material:

Number: Not given: Articulated skeleton in a mud-ball.

 

HORNER, 1994

Locality: Egg Mountain, Locality TM-006, Teton County, Montana.

Horizon: Two Medicine Formation.

Biostratigraphy:

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

Material:

EM-8-2-83: Vertebra.

EM-B-B: Tibia shaft.

MOR 406: Proximal ulna.

EM-7-9-94: Rib.

EM-7-8-94: Vertebra.

EM-B-F: Distal tibia.

EM-B-D: Articulated vertebra.

EM-7-17-84: Distal tibia.

EM-7-18-84: Rib.

EM-B-J: Femur.

EM-7-26-84: Caudal vertebra.

EM-8-11-82: Proximal metatarsal.

MOR 408: Ungual.

MOR 404: Humerus.

EM-B-R: Distal tibia.

EM-7-21-84: Vertebra.

EM-8-9-83: Metatarsal.

MOR 407: Femur.

MOR 401: Ilium.

EM-B-Y: Proximal fibula.

EM-8-3-83: Vertebra.

EM-B-b: Vertebra.

EM-B-d: Rib.

EM-7-18-83: Vertebra.

 

?Orodromeus

Locality: Maiasaura peeblesorum lower nesting ground, Willow Creek Anticline, Teton County, Montana.

Horizon: Two Medicine Formation.

Biostratigraphy:

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

Material:

YPM-PU 23439: Partial humerus.

 

MAXWELL & HORNER, 1994

Locality:

Horizon:

Biostratigraphy:

Age:

Material:

MOR 661, 679: Juveniles.

 

= Thescelosaurus cf. neglectus SAHNI, 1972

Locality: Clambank Hollow, Montana.

Horizon: Two Medicine Formation.

Biostratigraphy:

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

Material:

AMNH 8538, 8539: Teeth.

Number: Not given: 10 other teeth.

 

WOLFF & HORNER, 2003

Locality: Phillips County, Montana.

Horizon: Judith River Formation.

Biostratigraphy:

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

Material:

MOR: Fragmentary skeleton.