Genus: Coelosaurus LEIDY, 1865/[Anonymous, but known to be OWEN in WOODWARD & SHERBORN, 1891] 1854
Etymology: Greek, koilos, “hollow” and Greek, sauros, "lizard": Hollow lizard.
= Coelurosaurus WHITE, 1973 (sic)

Species: antiquus (LEIDY, 1865) BAIRD & HORNER, 1979
Etymology: Latin, antiqua, "ancient."
= Struthiomimus antiquus (LEIDY, 1865)
= Ornithomimus antiquus (LEIDY, 1865) BAIRD & HORNER, 1979
= Dryptosaurus antiquus (LEIDY, 1865) GALLAGHER, 1993

Syntype: ANSP 9222

Locality: Burlington County, New Jersey.

Horizon: Navesink (= New Egypt) Formation, Monmouth Group.

Biostratigraphy:

Age: Middle Maastrichtian Stage, uppermost Senonian subepoch, Gulf Epoch, Late Cretaceous.

Material: Tibia.

Referred material:

GALLAGHER, PARRIS & SPAMER, 1986

Locality: Big Brook, Monmouth County, New Jersey.

Horizon: Mount Laurel (“Wenonah”) Formation, Monmouth Group.

Biostratigraphy:

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

Material:

Number: Not given:

HORNER, 1979

ANSP 9151: Caudal vertebra.

AMNH 2549, 2550, 2551, 2552, 2553:

MAPS A1210b:

PU 21825, 22361:

Note: One is another tibia.

PU 22361: Left femur in A) medial and B) lateral views (Baird, 1986).

 

BAIRD, 1986

Locality: Loc. A., Cattail Brook on the Wilson Farm off Sheriff Road near Brightseat, Prince Georges County, Maryland.

Horizon: Severn Formation.

Biostratigraphy:

Age: Early Late Maastrichtian Stage, uppermost Senonian subepoch, Gulf Epoch, Late Cretaceous.

Material:

PU 23503, Medwick coll: Posterior caudal.

 

GALLAGHER, 1993

Locality: Chesapeake and Delaware Canal, spill piles near St. Georges, New Castle County, Delaware.

Horizon: Marshalltown Formation, Matawan Group.

Biostratigraphy:

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

Material:

NJSM 12503 (Cast from the private collection of E. Hartstein): Cast of a pedal phalanx.

 

Locality: Loc. C., Excavations for and exposure behind Hampton Mall Shopping Center, southwest of intersection of Route I-495 and Central Avenue, Prince Georges County, Maryland.

Horizon: Severn Formation.

Biostratigraphy:

Age: Early Late Maastrichtian Stage, uppermost Senonian subepoch, Gulf Epoch, Late Cretaceous.

Material:

Miller Collection: A small fragment of a metatarsal(?)

 

Locality: Loc. E., North side of US Route 50 immediately east of intersection with US Route 301, Prince Georges County, Maryland.

Horizon: Severn Formation.

Biostratigraphy:

Age: Early Late Maastrichtian Stage, uppermost Senonian subepoch, Gulf Epoch, Late Cretaceous.

Material:

USNM 256614, Myrick Coll: A mutilated left femur.

USNM 25664: Left femur in A) medial and B) lateral views (Barid, 1986).

 

 

SULLIVAN, 1997

Locality: Willow Wash, SW ¼ sec. 2, T24N, R12W, San Juan County, New Mexico.

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

Biostratigraphy:

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

Material:

SMP VP-714: Nearly complete left tibia of a juvenile.

 

= Laelaps macropus COPE, 1868 (nomen dubium)
Etymology: Greek, makros "long" and Greek, pous "foot."
= Dryptosaurus macropus (COPE, 1868) HAY, 1902 (nomen dubium)

Holotype:

Locality: New Jersey.

Horizon:

Biostratigraphy:

Age: Late Cretaceous.

Material: Foot bones.

Note: Lost.

_____________________________________________________________________________________