A. wichmannianus and A. giganteus to be growth stages of the same species and favored the name A. giganteus. This idea is problematic because A. wichmannianus was named earlier in the same paper and it is known from more material, it should, therefore, get priority over A. giganteus. The two species are also not from the same geological formation which suggests they did not belong to the same time period. In 1933, Von Huene and Charles Matley described another species, Antarctosaurus septentrionalis, meaning "northern". The remains were found in the Lameta Formation of Madhya Pradesh State in India. This species does preserve important anatomical information but has since been assigned to its own genus in 1994; Jainosaurus. Antarctosaurus jaxarticus from Kazakhstan is known from a single femur. It was named by Soviet paleontologist Anatoly Riabinin in 1938, and was the first sauropod species from Kazakhstan. It was reported from a certain locality in the Kyzylkum Desert, but the exact location is unknown. It may have come from the Syuksyuk Formation (originally described as Dabrazinskaya Svita) which dates to the Santonian stage of the Late Cretaceous. Other researchers have considered it as either, Titanosauridae incertae sedis, as a nomen dubium, or as a nomen nudum. In 1970, two fragmentary limb bones and a partial vertebra were found in the Adamantina Formation (originally described as Bauru Formation; has also been reported as the São José do Rio Preto Formation) of the northern Paraná Basin in Brazil. The remains were described by their discoverers Fahad Moysés Arid and Luiz Dino Vizotto in 1971 as A. brasiliensis. Other researchers have considered this species as either, a nomen dubium, or an indeterminate titanosaur. Description Describing Antarctosaurus is problematic because the type species consists of elements that are of questionable association and none of the species described are known from complete remains, which has caused a confused taxonomy of the genus. Of the four additional species that have been assigned to Antarctosaurus over the years, three have been considered dubious and "Antarctosaurus" septentrionalis, was given its own genus, Jainosaurus. The remains that have been described belong to sauropods, most probably titanosaurs, a group of large-bodied, quadrupedal herbivores, usually possessing a long neck and tail, with a small head. Antarctosaurus wichmannianus The assemblage of fossil remains that became known as A. wichmannianus were given the specimen number MACN 6904. The known material includes several skull fragments, including