Genus: Edmontosaurus LAMBE, 1917
Etymology: In reference to the Edmonton Formation, in Alberta, Canada, and Greek, sauros, “lizard”: “Edmonton lizard”.

Species: annectens (MARSH, 1892) BRETT-SURMAN vide CHAPMAN & BRETT-SURMAN, 1990
Etymology:

Referred material:

HATCHER, 1900/McINTOSH, 1981

McINTOSH, 1981

Locality: 2 or 3 miles north of Dogie Creek, Niobrara County, Wyoming.

Horizon: Lance Formation.

Biostratigraphy:

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

Material:

Number: Not given: Pelvis, many caudals, epidermis etc.

 


LYSON, HANKS & TREMAIN, 2003

Locality: North Dakota.

Horizon:

Biostratigraphy:

Age: Late Cretaceous.

Material:

Number: Not given: Fragmentary specimen of a juvenile with skin impressions.
Note: Capped overlapping ovoid structus, a grooved scales and a 9cm by 10 cm trapezoid horn-like scale all from the caudal section.

 


OSBORN, 1912

Locality: Niobrara (Converse) County, Wyoming.

Horizon: Lance Formation.

Biostratigraphy:

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

Material:

AMNH 5060: Skull, skeleton and skin impression.

Note: Mummy.

 

OSBORN, 1912

Locality: Niobrara (Converse) County, Wyoming.

Horizon: Lance Formation.

Biostratigraphy:

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

Material:

AMNH 5060: Skull, skeleton and skin impression.

Note: Mummy.

 

 

Locality:

Horizon:

Biostratigraphy:

Age:

Material:

AMNH 5894: Caudal vertebrae and skin.

Note: = Trachodon mirabilis OSBORN, 1912

 


Locality:

Horizon:

Biostratigraphy:

Age:

Material:

AMNH 5730: Skeleton and skin impressions.

AMNH 5863: Fragment with skin impressions.

AMNH 5058: Skeleton with skin impressions (= Trachodon sp, OSBORN, 1912).

Senckenberg Mus: Skeleton with skin impressions. (= Trachodon sp, OSBORN, 1912).

 


PATCHUS & DERSTLER, 1998

Locality: N43°20.345’, W104°29.029’, Niobrara County, Wyoming.

Horizon: Lance Formation.

Biostratigraphy:

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

Material:

University of New Orleans: Tail, pelvis and posterior toral are well articulated with skin impressions.

 


WIELAND, 1925

Locality:?

Horizon:?

Biostratigraphy:

Age:

Material:

Number: Not given: Mummy with stomach contents of twigs of conifers and dicots, needles of Cunninghamites elegans and numerous seeds of fruits, all in macerated form.

 


Locality: 7 miles north of Sheldon's Ranch, Niobrara County, Wyoming.

Horizon: Lance Formation.

Biostratigraphy:

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

Material:

USNM 6070: Section of caudal region covered by impression of skin.

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Sp
= Anatosaurus sp LULL & WRIGHT, 1942

Locality: Near Cook Ranch on Crooked Creek, Montana.

Horizon: Hell Creek Formation.

Biostratigraphy:

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

Material:

AMNH 5894: Posterior part of skeleton, hind limbs nearly complete, impressions of skin on tail.


= Anatosaurus sp

Locality: Castle Butte, 7 miles northwest of Forsyth, Montana.

Horizon: Lance Formation.

Biostratigraphy:

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

Material:

USNM 3814: Skull, lower jaws, fore limbs and skin impression.

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LYSON & GARSTKA, 1998

Locality: NW ¼ of the SW ¼, of section 15 T133N R106W, 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: Caudal, pelvic and hind limb with skin impressions.

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= cf. Edmontosaurus sp MANNING, MORRIS, MCMAHON, JONES, GIZE, MACQUAKER, WOLFF, THOMPSON, MARSHALL, TAYLOR, LYSON, GASKELL, REAMTONG, SELLERS, DONGEN, BUCKLEY & WOGELIUS, 2009

Locality: Northwest 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:

MRF-03: Fragmentary specimen.

Note: With skin impressions.

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= Anatosaurus sp WIDEMAN & LOFGREN, 2001

Locality: McCone County, Montana.

Horizon: Uppermost Lance Formation (8 m below the base of the overlying Tullock Formation).

Biostratigraphy:

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

Material:

Raymond Alf Museum: Articulated right leg, ischium, and articulated tail with tendons and skin impressions.