Tendaguria
Tendaguria | |
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Anterior dorsal vertebra of T. tanzaniensis | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Clade: | Dinosauria |
Clade: | Saurischia |
Clade: | †Sauropodomorpha |
Clade: | †Sauropoda |
Clade: | †Eusauropoda |
Clade: | †Turiasauria |
Genus: | †Tendaguria Bonaparte et al., 2000
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Species: | †T. tanzaniensis
|
Binomial name | |
†Tendaguria tanzaniensis Bonaparte et al., 2000
|
Tendaguria (.
Discovery and naming
In 1911, German geologist
The finds were formally named by
The type specimen consists of two
Description
Tendaguria was a large sauropod from the Tendaguru fossil locality. Its length is estimated at about twenty meters (sixty-six feet). It can be distinguished from other sauropods by the presence of two distinct cavities on the diapophyses of the anterior dorsal vertebrae. One is located behind and lateral to the prezygapophysis, on the anterior section of the diapophysis, while the other is behind the prezygapophyses. Additionally, it is unique from other turiasaurs in that it has a defined ridge in the middle of the anteriormost dorsal spines.[3]
Classification
Due to its unique morphology, Tendaguria defied classification in the original description, where the authors placed it as Sauropoda incertae sedis, though also naming a separate Tendaguriidae. It shows a mix of basal and derived traits, indicating a position outside, respectively inside[clarification needed], Neosauropoda. A cervical vertebra referred to Tendaguria because of a similar low spine shows some similarities to Camarasaurus.[2] In 2014 it was included in a cladogram generated in the redescription of Diamantinasaurus, where it was placed as the sister to Wintonotitan within Somphospondyli.[4]
In a redescription of Tendaguria and other Tendaguru sauropods, Mannion et al. (2019) assign Tendaguria to Turiasauria based on a large phylogenetic analysis where it is recovered as the sister taxon of Moabosaurus within the Turiasauria, based on shared features in their anterior dorsal vertebrae. The result of the extended implied weighting analysis is shown below, with large clades condensed for clarity.[3]
References
- ^ Janensch, W., 1929, "Material und Formengehalt der Sauropoden in der Ausbeute der Tendaguru-Expedition", Palaeontographica (Suppl. 7) 2: 1-34
- ^ a b c J.F. Bonaparte, W.-D. Heinrich, and R. Wild, 2000, "Review of Janenschia Wild, with the description of a new sauropod from the Tendaguru beds of Tanzania and a discussion on the systematic value of procoelous caudal vertebrae in the Sauropoda", Palaeontographica Abteilung A 256(1-3): 25-76
- ^ ISSN 0024-4082.
- hdl:10044/1/27497.