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DAANOSAURUS

a plant-eating, possibly macronarian, eusauropod dinosaur from the Late Jurassic of China.
Pronunciation: DAH-no-SOR-us
Meaning: Da-an district lizard
Author/s: Ye et al. (2005)
Synonyms: None known
First Discovery: Sichuan, China
Chart Position: 461

Daanosaurus zhangi

When Ye, Gao and Jiang coined Daanosaurus for a juvenile sauropod specimen from the Late Jurassic of China in 2005, they assigned it to Bellusaurinae; a sub-family of Brachiosauridae that Dong Zhiming had raised in 1990 to house Bellusaurus from Xinjiang's Klameli area. Funnily enough, the latter is also based solely on juvenile specimens, with some experts suspecting they belong to the region-honoring Klamelisaurus, which is known only from adult remains that share key features. Fortuitously, Daanosaurus has managed to dodge thunder-stealing adults so far, but that may well change if it ever gets a long overdue review, and there would be no shortage of candidates.

Daanosaurus was described, ever so briefly, as having spoon-shaped teeth, slightly elongate neck vertebrae, hollowed-at-the-rear opisthocoelous back vertebrae with broad plate-like spines that was mispelled... twice... as opsithocoelous, and long straight thighs that are extremely bulbous at both ends. However, some of those features are found in many sauropods, including the contemporaneous non-neosauropod eusauropod Mamenchisaurus, while opisthoceolous back vertebrae are present in all macronarian sauropods. Given the uncertainty, palaeontologists currently seem content to class Daanosaurus as a eusauropod of uncertain placement and brush it under the carpet, but one of them will have to tackle it head-on eventually.
(Zhang's Da-an lizard)Etymology
Daanosaurus is derived from "Da-an" (for the Da-an district of Zigong) and the Greek "sauros" (lizard). The species epithet, zhangi, honors Chinese paleontologist Fucheng Zhang.
Discovery
The remains of Daanosaurus were discovered at Yongan quarry in the Upper Shaximiao (Shangshaximiao) Formation, Da-an district, Zigong Prefecture (aka "Salt City"), Sichuan Province, China. The holotype (ZDM 0193) is a partial skeleton.
Estimations
Timeline:
Era: Mesozoic
Epoch: Late Jurassic
Stage: Oxfordian-Tithonian
Age range: 161-145mya
Stats:
Est. max. length: ?
Est. max. hip height: ?
Est. max. weight: ?
Diet: Herbivore
References
• Ye Y, Y-H Gao, and S Jiang (2005) "A new genus of sauropod from Zigong, Sichuan". Vertebrata PalAsiatica, Volume 43, Issue 3, Pages 175-181.
• Mannion PD, P Upchurch, RN Barnes and O Mateus (2013) "Osteology of the Late Jurassic Portuguese sauropod dinosaur Lusotitan atalaiensis (Macronaria) and the evolutionary history of basal titanosauriforms". Zoological Journal of the Linnean Society 168:98-206.
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To cite this page:
Atkinson, L. "DAANOSAURUS :: from DinoChecker's dinosaur archive".
›. Web access: 25th Jun 2017.
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