Genus: Hadrosaurus LEIDY, 1858
Etymology: Greek, hadros, “bulky, stout, strong, powerful”, and Greek, sauros, “lizard”: “Bulky lizard”.
= Hadrasaurus COPE, 1869 (sic)
= Hodeosaurus WU, 1985 (sic)
= Madrosaurus SAUVAGE, 1883 (sic)
= Ornithosaurus RIABININ, 1930 (sic)
= Ornithotarsus COPE, 1969
Etymology: Greek, ornith- (ornis), “bird”, and Greek, tarsos, “tarsus”: “Bird tarsus”.

Species: foulkii LEIDY, 1858
Etymology: In honor of William Parker Foulke (1816–1865).
= Trachodon foulkii (LEIDY, 1858) LYDEKKER, 1888
= Hadrosaurus foulkei COPE, 1870 (sic), COPE, 1871 (sic), COPE, 1889 (sic), MILLER, 1967 (sic)
= Hadrosaurus faulkii LANGSTON, 1960 (sic)

Holotype: ANSP 10005

Locality: Mr. Hopkins's Farm, on the south branch of Cooper's Creek, Haddonfield, Camden County, New Jersey.

Horizon: Woodbury Formation, Matawan Group. Marine deposit.

Biostratigraphy:

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

Material: Mandibular teeth, fragment of dentary, 28 vertebrae, humerus, radius, ulna, ilium, ischium, femur, tibia, fibula and two metatarsals.

New reconstruction of the skeleton quadrapedal.

New reconstruction of the skeleton bipedal.

Referred material:

HORNER, 1979

Locality: 6 miles NW of Freehold, Monmouth County, New Jersey.

Horizon: Englishtown-Marshalltown Formation, Matawan Group.

Biostratigraphy:

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

Material:

AMNH 7626: Partial jaw.


Locality: 5 miles NW of Freehold on Rte. 9 at Manalapan-Marlboro Township line, 3/4 mile N of Gordons’ Corner, Monmouth County, New Jersey.

Horizon: Matawan Group.

Biostratigraphy:

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

Material:

YPM 21813, 21824: Partial jaw.

 

LYDEKKER, 1888

Locality: Huddersfield, New Jersey.

Horizon:

Biostratigraphy:

Age: Late Cretaceous.

Material:

BMNH R1007: Transverse section of a tooth.

_____________________________________________________________________________________