Austrosaurus Explained
Austrosaurus (;) was an extinct genus of sauropod dinosaur from the Allaru Formation, from the early Cretaceous (112-105 million years ago) of Central-Western Queensland in Australia.
Discovery and species
The holotype, QM F2361 (consisting of three blocks containing primitive and badly weathered vertebrae and rib fragments, with a further 5 large blocks and at least 10 smaller ones later assigned to the holotype as well), was discovered by Mr. H.B. Wade on Clutha Station near Maxwelton in north Queensland in 1932, who alerted the station manager H. Mackillop, who showed his brother who sent them to the Queensland Museum. Austrosaurus was described by Heber Longman in 1933.
Paleobiology
Originally it was thought that sauropods spent time near or in water to relieve weight from their legs.[1] However, this theory is now rejected and it is believed that Austrosaurus like all sauropods lived on dry land. Fossil finds suggest a height of approximately 3.9 metres at the hip and 4.1 metres at the shoulder, which would have given it an almost level back. Gregory S. Paul estimated its body size at 20m (70feet) in length and 16MT in body mass.[2]
Classification
Initially, Austrosaurus was considered a cetiosaurid, like Patagosaurus or Shunosaurus. Hocknull et al. (2009) described the new sauropod Wintonotitan from material that originally assigned to Austrosaurus by Coombs and Molnar in 1981.[3] [4] Hocknull suggested that Austrosaurus mckillopi differed only slightly from the QMF 7292, the holotype of Wintonotitan wattsii, and should be considered a nomen dubium. Poropat et al. (2017) reported additional sauropod material from the Austrosaurus type locality and assigned them to the Austrosaurus holotype, finding the genus to be a valid titanosauriform tentatively assignable to Somphospondyli.[5]
Further reading
- Book: Long JA. Dinosaurs of Australia and New Zealand and other animals of the Mesozoic Era. UNSW Press. 1998 . 0-86840-448-9 .
- Book: Molnar RE, Salisbury SW. amp . 2005. Observations on Cretaceous Sauropods from Australia. Carpenter, Kenneth . Tidswell, Virginia . Thunder Lizards: The Sauropodomorph Dinosaurs. limited. 454 - 465. Indiana University Press. 0-253-34542-1.
- Coombs WP and Molnar RE. 1981. Sauropoda (Reptilia, Saurischia) from the Cretaceous of Queensland. Memoirs of the Queensland Museum. 20. 2. 351–373. 1440-4788.
- Longman. HA. 1933. A new dinosaur from the Queensland Cretaceous. Memoirs of the Queensland Museum . 10. 3. 131–144. 1440-4788.
- 10.1371/journal.pone.0006190. 2703565. 19584929 . New Mid-Cretaceous (Latest Albian) Dinosaurs from Winton, Queensland, Australia . 2009 . Sereno . Paul . Hocknull . Scott A. . White . Matt A. . Tischler . Travis R. . Cook . Alex G. . Calleja . Naomi D. . Sloan . Trish . Elliott . David A. . PLOS ONE . 4 . 7 . e6190. 2009PLoSO...4.6190H. free.
External links
Notes and References
- Book: Martin, Anthony J.. Introduction to the Study of Dinosaurs. Blackwell Publishing. 2006. 434–435. limited. 1-4051-3413-5.
- Paul, G.S., 2010, The Princeton Field Guide to Dinosaurs, Princeton University Press p. 206
- Hocknull, SA; White, MA; Tischler, TR, Cook AG, Calleja ND, Sloan T, Elliott DA (2009). New Mid-Cretaceous (Latest Albian) Dinosaurs from Winton, Queensland, Australia. PLOS ONE. 4: 7 e6190.
- Coombs, W.P. and Molnar, R.E., 1981, Sauropoda (Reptilia, Saurischia) from the Cretaceous of Queensland: Queensland Museum, Memoirs, v. 20, pp. 351–372
- S.F. . Poropat . J.P. . Nair . C.E. . Syme . P.D. . Mannion . P. . Upchurch . S.A. . Hocknull . A.G. . Cook . T.R. . Tischler . T. . Holland . 2017 . Reappraisal of Austrosaurus mckillopi Longman, 1933 from the Allaru Mudstone of Queensland, Australia's first named Cretaceous sauropod dinosaur . Alcheringa . 41 . 4 . 543–580 . 10.1080/03115518.2017.1334826. 2017Alch...41..543P . 10044/1/48659 . 134237391 . free .
