Tataouinea

From Wikipedia, the free encyclopedia
Not to be confused with Tataouine.

Tataouinea
Temporal range: early Albian
113–110.2 Ma
PreꞒ
Ꞓ
O
S
D
C
P
T
J
K
Pg
N
↓
[1]
Tataouinea skeleton.png
Reconstructed skeleton (with unknown elements based on Nigersaurus), with known elements in pink
Scientific classification edit
Kingdom: Animalia
Phylum: Chordata
Clade: Dinosauria
Clade: Saurischia
Clade: †Sauropodomorpha
Clade: †Sauropoda
Superfamily: †Diplodocoidea
Family: †Rebbachisauridae
Genus: †Tataouinea
Fanti et al., 2013
Species:
†T. hannibalis
Binomial name
†Tataouinea hannibalis
Fanti et al., 2013

Tataouinea is an extinct genus of sauropod dinosaur in the subfamily Rebbachisaurinae of Rebbachisauridae which lived in the Early Cretaceous Tunisia. Only one species, T. hannibalis, is known.[2]

Discovery and naming[]

Type specimen in situ

The first known elements of the holotype were discovered in the Aïn el Guettar Formation in 2011 by Aldo Luigi Bacchetta, but he was unable to excavate the specimen until 2012. The remains were subsequently studied by Federico Fanti, Andrea Cau, Mohsen Hassine and Michela Contessi. The genus was named in 2013[2] and in 2015, more material of the holotype specimen was uncovered after the initial description were analysed.[3] These included additional tail vertebrae.

Description[]

Tail vertebrae 8 and 9

Its bones were extensively pneumatic, providing strong support for the theory that sauropods had birdlike respiratory systems. Key characteristics of its vertebral morphology show that Tatouinea was a rebbachisaurid, closely related to the nigersaurines of Europe.[2] A phylogenetic analysis was published alongside the paper, finding a clade of nigersaurines to include Rebbachisaurus, thus forcing the subfamily to be renamed Rebbachisaurinae.[3]

The exact size of Tataouinea is unknown, but comparison to similar sauropods indicates a size of about 13.5 metres (44 ft) meters long and a height of around 2.5 metres (8.2 ft) at the hips for the holotype individual.[2]

Etymology[]

The genus name bears the name of the region where it was discovered, Tataouine, and the epithet honours Hannibal, a Carthaginian punic military commander.

Classification[]

Tataouinea was placed in the Rebbachisaurinae by Fanti et al. (2015). The 2015 cladogram of Fanti et al. is shown below.[3]

Rebbachisauridae
 

Amazonsaurus

 
 
 

Zapalasaurus

 
 

Histriasaurus

 
 

Comahuesaurus

 
Khebbashia
Limaysaurinae
 

Cathartesaura

 
 

Limaysaurus

 
 
Rebbachisaurinae
 

Katepensaurus

 
 
 

Nigersaurus

 
 
 

Rebbachisaurus

 
 

Demandasaurus

 
 

Tataouinea

 
 
 
 
 
 
 

Paleoecology[]

Tataouinea was discovered in the or the nearby Oum ed Diab Member of the Aptian-Albian Aïn el Guettar Formation. It coexisted with an unnamed carcharodontosaurid, Carcharodontosaurus, Spinosaurus, the notosuchian Araripesuchus, an unnamed sauropod, an unnamed iguanodont, an unnamed ornithocheirid pterosaur, an unnamed species of Sarcosuchus and a species of fish known as Mawsonia.[2][4]

References[]

  1. ^ Ogg, J. G.; Hinnov, L. A.; Huang, C. (2012-01-01), Gradstein, Felix M.; Ogg, James G.; Schmitz, Mark D.; Ogg, Gabi M. (eds.), "Chapter 27 - Cretaceous", The Geologic Time Scale, Boston: Elsevier, pp. 793–853, doi:10.1016/b978-0-444-59425-9.00027-5, ISBN 978-0-444-59425-9
  2. ^ a b c d e Federico Fanti; Andrea Cau; Mohsen Hassine & Michela Contessi (2013). "A new sauropod dinosaur from the Early Cretaceous of Tunisia with extreme avian-like pneumatization". Nature Communications. 4 (2080): 1–7. Bibcode:2013NatCo...4.2080F. doi:10.1038/ncomms3080. PMID 23836048.
  3. ^ a b c Fanti, F.; Cau, A.; Cantelli, L.; Hassine, M.; Auditore, M. (2015). "New Information on Tataouinea hannibalis from the Early Cretaceous of Tunisia and Implications for the Tempo and Mode of Rebbachisaurid Sauropod Evolution". PLOS ONE. 10 (4): e0123475. Bibcode:2015PLoSO..1023475F. doi:10.1371/journal.pone.0123475. PMC 4414570. PMID 25923211.
  4. ^ BENTON, M. J., BOUAZIZ, S., BUFFETAUT, E., MARTILL, D. M., OUAJA, M., SOUSSI, M. & TRUEMAN, C. (2000): Dinosaurs and other fossil vertebrates from fluvial deposits in the Lower Cretaceous of southern Tunisia. Palaeogeography, Palaeoclimatology, Palaeoecology, 157: 227–246.
Retrieved from ""