Genera

Anchisaurus

7월 4, 2025 - By user

Anchisaurus

“near lizard”

[ Measurements | Time | Place | Remains | Essay ]

CLASSIFICATION

Anchisaurus
Marsh, 1885TYPE SPECIES:
A. polyzelus (Hitchcock, 1865) (originally “Megadactylus“)

OTHER SPECIES:
A. major Marsh, 1889 “greater near lizard”

MISASSIGNED SPECIES:
A. capensis (Broom, 1911) (originally Gyposaurus) == Massospondylus carinatus
A. colurus Marsh, 1891 ?= A. polyzelus
A. sinensis (Young, 1941) (originally Gyposaurus) = “Gyposaurus” sinensis
A. solus Marsh, 1892 == Ammosaurus major

Animalia Vertebrata Tetrapoda Sauropsida Archosauromorpha Ornithodira Dinosauria Sauropodomorpha

MEASUREMENTS

LENGTH: 2 m
. A. major: 2.5 m to 4 m

see also: World Records

TIME

Pliensbachian to Toarcian
.A. major: Pliensbachian to Toarcian

see also: Ages of the Mesozoic

PLACE

Connecticut, Massachusetts
A. major: Connecticut, Arizona & Nova Scotia?

see also: Paleo-Maps

REMAINS

A. polyzelus
YPM 201 [holotype]: fragmentary skeleton
YPM 1883: skull, 18 presacral vertebrae, scapulocoracoid, left forelimb, ilium, pubes, right hindlimb (Anchisaurus colurus)
YPM 2125: partial appendicular & axial remains
A. majorYPM 208 [holotype]: 3 presacral vertebrae, sacrum, pelvis, hindlimbsYPM 209: pelvis, podes (Ammosaurus solus)
?MNA G2 7233: lower parts of skeleton

see also: Anatomy

ESSAY

Anchisaurus colurus may represent another gender (female?) of A. polyzelus. A. major, the type species of Ammosaurus, may also be a synonym of Anchisaurus polyzelus.