Genus: Anchisaurus MARSH, 1885
Etymology: Greek, agkhi, anchi, “near”, and Greek, sauros, "lizard": “Near Lizard”.
= Ammosaurus MARSH, 1891
Etymology: Greek, ammos, “sand” and Greek, sauros, "lizard": “Sand Lizard”.
= Ammorsaurus STOKES & MADSEN, 1978 (sic)
= Amphisaurus MARSH, 1877 (nomen nudum)
Etymology: Greek, amphi, “near, around, both" and Greek, sauros, "lizard": “Near lizard”.
= Amphisaurus MARSH, 1882/BARKAS, 1870
= Megadactylus HITCHCOCK, 1865/FITZINGER, 1843
Etymology: Greek, megas, “great, large” and Greek, daktylos, “finger”: “Great finger”.
= Yaleosaurus HUENE, 1932
Etymology: In reference to Yale Peabody Museum, where the specimen is kept, and Greek, sauros, "lizard": “Yale lizard”.

Species: polyzelus (HITCHCOCK, 1865) MARSH, 1885
Etymology: Greek, polys, “many” and Greek, zelos, “jealousies.” Polyzelus was brother of Heiron, who
conquered parts of Italy and fought with the Etruscans.
= Megadactylus polyzelus HITCHCOCK, 1865
= Amphisaurus polyzelus (HITCHCOCK, 1865) MARSH, 1882
= Thecodontosaurus polyelus (HITCHCOCK, 1865) HUENE, 1914

Holotype: ACM 41109 (AM 41/109-118)

Locality: Water shops, U. S. Armory, Springfield, Hampden County, Massachusetts.

Horizon: Longmeadow Sandstone, from the Upper (Portland) beds of sandstones, etc. of the Newark Series.

Biostratigraphy:

Age: Pliensbachian or Toarcian Stage, Upper Lias Epoch, Early Jurassic.

Material: As a result of the blast which exposed the bones and of subsequent losses the specimen now includes 11 vertebrae, an incomplete scapula, an almost complete manus, the ischial rods and fragmentary
hind limb. 1 dorsal and 4 caudal vertebrae, distal ends of right radius and ulna, right manus, 2 ischia, left femur, proximal end of tibia, left fibula and pes.

After YATES, 2010) ACM 41109 (AM 41/109-118)

Referred material:

Locality: Quarry of Charles O. Wolcott, about one mile north of Buckland Station, Manchester, Connecticut.

Horizon: High in the Upper (Portland) beds in coarse, red arkose, near top of the Newark Series.

Biostratigraphy:

Age: Late Triassic.

Material:

YPM 1883: Fragmentary skull, and fragmentary skeleton.

 

= Anchisaurus major MARSH, 1889
Etymology: Latin, major, "greater."
= Ammosaurus major (MARSH, 1889) MARSH, 1891

Holotype: YPM 208

Locality: Quarry of Charles O. Wolcott, about one mile north of Buckland Station, Manchester, Connecticut.

Horizon: High in the Upper (Portland) beds in coarse, red arkose, near top of the Newark Series.

Biostratigraphy:

Age: Pliensbachian or Toarcian Stage, Middle-Late Lias Epoch, Early Jurassic.

Material: Pelvis and hind limbs.

Referred material:

 


OSTROM, 1969

Locality:

Horizon:

Biostratigraphy:

Age:

Material:

YPM:

YPM: Another block with a femur and ribs.

 


= Anchisaurus solus MARSH, 1892 (Juvenile)
Etymology: Latin, solus, "alone."
= Ammosaurus solus (MARSH, 1892) KUHN, 1939

Holotype: YPM 209

Locality: Quarry of Charles O. Wolcott, about one mile north of Buckland Station, Manchester, Connecticut.

Horizon: High in the Upper (Portland) beds in coarse, red arkose, near top of the Newark Series.

Biostratigraphy:

Age: Late Triassic.

Material: Fragmentary skull and an almost complete skeleton of a juvenile.


= Anchisaurus colurus MARSH, 1891
Etymology: Greek, colurus, "mutilated, maimed, mangled."
= Yaleosaurus colurus (MARSH, 1891) HUENE, 1932

Holotype: YPM 1883

Locality: In a Quarry of Charles O. Wolcott, about 1 mile north of Buckland Station, Near Manchester, Hartford County, Connecticut.

Horizon: Portland beds, upper part of Newark Supergroup.

Biostratigraphy:

Age: Late Carnian Stage, Lower Late Triassic Epoch, Late Triassic.

Material: Skull, jaws, 18 presacral vertebrae, scapula-coracoid, left foreleg and manus, one ilium, pubes, right hind leg and pes.

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