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a herbivorous lithostrotian sauropod dinosaur from the Late Cretaceous of Argentina.
Pronunciation: ant-ARK-toe-SOR-us
Meaning: Non-northern lizard
Author/s: Huene [1] (1929)
Synonyms: None known
First Discovery: Rio Negro, Argentina
Chart Position: 123

Antarctosaurus wichmannianus

Antarctosaurus is derived from the Greek "ant" (opposite), "arktos" (north) and "sauros" (lizard) and does not mean "lizard of the Antarctic" as the name may imply. We can't help thinking that von Huene (1929) should have opted for the vacant "Southern lizard" title to save a lot of confusion (Austrosaurus wasn't named until four years later).
The species epithet, wichmannianus, honors Ricardo Wichmann.
The first fossils of Antarctosaurus were discovered 15km SW of General Roca City in the Anacleto Formation (formerly the Anacleto Member), Rio Colorado Subgroup (formerly the Rio Colorado formation), Neuquen Group, Río Negro, Argentina, by geologist Ricardo Wichmann in 1912.
The holotype (M.A.C.N. 6.804) is an incomplte skull and partial skeleton which includes bits of ribs, hind and fore limbs, foot and toe bones, a partial hip, shoulder blade, and other bits and bobs.
Era: Mesozoic
Epoch: Late Cretaceous
Stage: Campanian
Age range: 83-78 mya
Est. max. length: 18 meters
Est. max. hip height: ?
Est. max. weight: 21 tons
Diet: Herbivore
Other species
Antarctosaurus giganteus ("Gigantic one"), based on a partial left and right pubis, a partial shin, numerous rib and tail vertebrae fragments, and two gigantic thigh bones from the Plottier Formation of Neuquén Province that Friedrich von Huene named in 1929, cannot be assigned to Antarctosaurus with any certainty.
"Antarctosaurus" septentrionalis ("the northern one"), named in 1933 by von Huene and Charles Matley for fossils from India, was renamed Jainosaurus by Hunt, Lockley, Lucas and Meyer in 1994.
"Antarctosaurus" jaxarticus ("of Jaxartes": an ancient name for the Syrdarya River), based on a single femur from Kazakhstan that Anatoly Riabinin named in 1939, is dubious.
"Antarctosaurus" brasiliensis ("from Brasil"), based on two fragmentary limb bones and a partial vertebra that were found in the Bauru Formation in 1970 and described by Fahad Moysés Arid and Luiz Dino Vizotto the following year, is also dubious.
• Huene F von (1929) "Los saurisquios y ornitisquios del Cretacéo Argentino". Anales del Museo de La Plata (series 3) 3: 1-196. [In Spanish]
• Upchurch P, Barrett PM and Dodson P (2004) Chapter Thirteen: "Sauropoda" in Weishampel, Dodson, and Osmólska (eds.) "The Dinosauria: Second Edition".
• "Antarctosaurus" in "The Age of Dinosaurs": Peter Dodson & Brooks Britt, Kenneth Carpenter & Catherine A. Forster, David D. Gillette & Mark A. Norell, George Olshevsky & Michael J. Parrish, David B. Weishampel
• Riabinin AN (1939) "The Upper Cretaceous vertebrate fauna of S. Kazakhstan".
• Arid FM and Vizotto LD (1971) "Antarctosaurus brasiliensis, um novo saurópode do Crétaceo superior do sul do Brasil". [Antarctosaurus brasiliensis, a new sauropod from the Upper Cretaceous of southern Brazil]. Anais do XXV Congresso Brasieiro de Geologia 297-305.
• Huene F von and Matley CA (1933) "The Cretaceous Saurischia and Ornithischia of the Central Provinces of India". Palaeontologica Indica (New Series), Memoirs of the Geological Survey of India 21(1):1-74.
• Hunt AP, Lockley MG, Lucas SG and Meyer CA (1995) "The global sauropod fossil record". Aspects of Sauropod Paleobiology. GAIA 10:261-279.
• Wilson JA, D'Emic M, Curry Rogers CA, Mohabey DM and Sen S (2009) "Reassessment of Sauropod Dinosaur Jainosaurus (="Antarctosaurus") septentrionalis from the Upper Cretaceous of India". Contributions from the Museum of Paleontology, University of Michigan, Vol. 32, No. 2, Page 17-40.
• Ariana Paulina Carabajal (2012) "Neuroanatomy of Titanosaurid Dinosaurs From the Upper Cretaceous of Patagonia, With Comments on Endocranial Variability Within Sauropoda".
• Novas F (2009) "The Age of Dinosaurs in South America.
• D'Emic M (2015) "Osteoderms of the titanosaur sauropod dinosaur Alamosaurus sanjuanensis Gilmore, 1922". Journal of Vertebrate Paleontology Volume 35, Issue 1.
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To cite this page:
Atkinson, L. "ANTARCTOSAURUS :: from DinoChecker's dinosaur archive".
›. Web access: 18th Feb 2018.