Genus: Antarctosaurus HUENE, 1929
Etymology: Greek, ant- (anti) "against, opposite," Greek, arktos, "north" and Greek, sauros, "lizard": “Southern lizard”.
= Antarctosaurus HUENE, 1927 (nomen nudum)
= Anarctosaurus JANENSCH, 1935 (sic)
= Anctarctosaurus [ANONYMOUS] 1977 [sic; in Die Geheimnisse der Urzeit 3, p. 234]

Species: wichmannianus HUENE, 1929
Etymology: In honor of Ricardo Wichmann.
= Antarctosaurus wichmanni HUENE, 1929 (sic)
= Laplatasaurus wichmannianus HUENE, 1929 (sic)

Holotype: MACN 6804

Locality: Paso Cordoba, 15 km south-west of the city of Genral Roca, El Cuy Department, Rio Negro Province, Argentina.

Horizon: Anacleto member? Rio Colorado Formation, Neuquen Group.

Biostratigraphy:

Age: Coloradoan Tetrapoda Assemblage, Santonian-Campanian Stage, Senonian Subepoch, Gulf Epoch, Late Cretaceous.

Material: Fragmentary skull, fragmentary mandible, fragmentary costals, fragmentary humerus, distal ulna, distal radius, fragmentary metacarpals, 1 ungual phalange, fragmentary ischium, distal pubis, tibia, fragmentary fibula, calcaneum, phalanges, 1 cervical vertebra, fragmentary scapula, fragmentary coracoid, proximal radius, 6 metacarpals incomplete, 1 phalange, fragmentary ilium, incomplete ischium, fragmentary femur, fibula, astragalus, 4-5 metatarsals.

Note: WILSON, 2005 referes the braincase to NEMEGTOSAURIDAE.

Antarctosaurus wichmannianus (modified from SALGADO & CALVO, 1997), Holotype: MACN 6804.

Referred material:

Locality: San Bernardo, 45 km east of Colonai Sarmiento, Chubut Province, Patagonia, Argentina.

Horizon:

Biostratigraphy:

Age: Late Cretaceous.

Material:

Field Museum of Chicago EE. UU. 13.019 Right femur.

Field Museum of Chicago 13.020: Left tibia.

 

Locality: Sierra de San Bernardo, 45 km east of Colonia Sarmiento, Argentina.

Horizon: Castillo Formation, Bajo Barreal Formation.

Biostratigraphy:

Age: Senonian Subepoch, Gulf Epoch, Late Cretaceous.

Material:

Number: Not given:

MONES, 1972

Locality: Soriano, La Lancha y Maciel, 10 km west of Jose e. Rodo, Uruguay.

Horizon:

Biostratigraphy:

Age: Late Cretaceous.

Material:

Number: Not given:

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Species:? giganteus HUENE, 1929
Etymology: Latin, giganteus, "like that of Giants."

Holotype: MLP 26-316

Locality: Aguada del Cano (small river Cano) that empties into the Limay River, 22 km east of Neuquen, 15 km to the north of China Muerta, Confluencai Department, Neuquen Province, Argentina.

Horizon: Plottier Formation, Lower Rio Neuquen Subgroup, Middle Neuquen Group.
(was Plottier Member? Rio Neuquen Formation, Neuquen Group.)

Biostratigraphy:

Age: Neuquenian Tetrapoda Assemblage, Upper Turonian or Coniacian Stage, Lower Senonian Subepoch, Lower Gulf Epoch, Early Late Cretaceous.

Material: 2 femurs, 2 fragmentary pubi, extreme distal end of tibia, 6 rib fragments, fragmentary costals and 2 distal caudal vertebrae.

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Species: ? jaxarticus RIABININ, 1938 (nomen dubium)
Etymology:
= Antarctosaurus jaxartensis KUHN, 1965 (sic)

Holotype:

Locality: Sary-Agach, Kyzylkum Desert, Chimkent District, Kazakhstan.

Horizon: Dabrazinskaya Svita.

Biostratigraphy:

Age: Turonian-Santonian Stage, Lower Senonian Subepoch, Lower Gulf Epoch, Late Cretaceous.

Material: Femur.

Referred material:

= Antarctosaurus? jaxarticus RYAN, 1997

Locality: Republic of Tajikistan.

Horizon: Yalovach Formation.

Biostratigraphy:

Age: Late Cretaceous.

Material:

Number: Not given:

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Species: brasiliensis ARID & VIZOTTO, 1972
Etymology: In reference to Brazil, where the speicmen was discovered.

Holotype: FFCL GP-RD 2, 3, 4

Locality: 5 km of the Sao Jose do Rio Preto-Barretos state highway, Sao Paulo State, Northern part of the Parana Basin, South Brazil.

Horizon: Adamantina Formation, Bauru Group.

Biostratigraphy:

Age: Campanian-Maastrichtian Stage, Senonian Subepoch, Gulf Epoch, Late Cretaceous.

Material: Brake down as follows…

FFCL GP-RD 2: Middle to distal end of a left femur.

FFCL GP-RD 3: Middle proximal portion of the right humerus.

FFCL GP-RD 4: Fragmentary dorsal vertebra.