''Tataouinea'' is an extinct genus of

sauropod Sauropoda (), whose members are known as sauropods (; from '' sauro-'' + '' -pod'', 'lizard-footed'), is a clade of saurischian ('lizard-hipped') dinosaurs. Sauropods had very long necks, long tails, small heads (relative to the rest of their b ...

dinosaur Dinosaurs are a diverse group of reptiles of the clade Dinosauria. They first appeared during the Triassic Geological period, period, between 243 and 233.23 million years ago (mya), although the exact origin and timing of the #Evolutio ...

in the subfamily Rebbachisaurinae of

Rebbachisauridae Rebbachisauridae is a family of sauropod dinosaurs known from fragmentary fossil remains from the Cretaceous of South America, Africa, North America, Europe and possibly Central Asia. Taxonomy In 1990 sauropod specialist Jack McIntosh included t ...

which lived in the

Early Cretaceous The Early Cretaceous (geochronology, geochronological name) or the Lower Cretaceous (chronostratigraphy, chronostratigraphic name) is the earlier or lower of the two major divisions of the Cretaceous. It is usually considered to stretch from 143.1 ...

Tunisia Tunisia, officially the Republic of Tunisia, is a country in the Maghreb region of North Africa. It is bordered by Algeria to the west and southwest, Libya to the southeast, and the Mediterranean Sea to the north and east. Tunisia also shares m ...

. Only one species, ''T. hannibalis'', is known.

Discovery and naming

The first known elements of the

holotype A holotype (Latin: ''holotypus'') is a single physical example (or illustration) of an organism used when the species (or lower-ranked taxon) was formally described. It is either the single such physical example (or illustration) or one of s ...

were discovered in the

Aïn el Guettar Formation The Aïn el Guettar Formation is a geological Formation (geology), formation in Tunisia, whose strata date back to the Aptian, Late Aptian to Albian, Late Albian stages of the Cretaceous period. The lithology consists of coarse sandstones with occ ...

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. The name refers to the Tataouine Governatorate, Tunisia, and

Hannibal Hannibal (; ; 247 – between 183 and 181 BC) was a Punic people, Carthaginian general and statesman who commanded the forces of Ancient Carthage, Carthage in their battle against the Roman Republic during the Second Punic War. Hannibal's fat ...

. In 2015 more material of the holotype specimen was uncovered after the initial description were analysed. These included additional tail vertebrae.

Description

Its bones were extensively pneumatic, providing strong support for the theory that sauropods had

bird Birds are a group of warm-blooded vertebrates constituting the class (biology), class Aves (), characterised by feathers, toothless beaked jaws, the Oviparity, laying of Eggshell, hard-shelled eggs, a high Metabolism, metabolic rate, a fou ...

like respiratory systems. Key characteristics of its vertebral morphology show that ''Tatouinea'' was a

rebbachisaurid Rebbachisauridae is a Family (biology), family of sauropod dinosaurs known from fragmentary fossil remains from the Cretaceous of South America, Africa, North America, Europe and possibly Central Asia. Taxonomy In 1990 sauropod specialist Jack M ...

, closely related to the nigersaurines of

Europe Europe is a continent located entirely in the Northern Hemisphere and mostly in the Eastern Hemisphere. It is bordered by the Arctic Ocean to the north, the Atlantic Ocean to the west, the Mediterranean Sea to the south, and Asia to the east ...

. A phylogenetic analysis was published alongside the paper, finding a clade of nigersaurines to include ''

Rebbachisaurus ''Rebbachisaurus'' (meaning " Aït Rebbach lizard") is a genus of sauropod dinosaur of the superfamily Diplodocoidea, that lived during the Late Cretaceous period in Africa and possibly also South America about 99-97 million years ago. Remains at ...

'', thus forcing the subfamily to be renamed Rebbachisaurinae. The exact size of ''Tataouinea'' is unknown, but comparison to similar sauropods indicates a size of about meters long and a height of around at the hips for the holotype individual.

Etymology

The genus name bears the name of the region where it was discovered,

Tataouine Tataouine (; ) is a city in southern Tunisia. It is the capital of the Tataouine Governorate. The below-ground "cave dwellings" of the native Berber population, designed for coolness and protection, render the city and the area around it as a to ...

, and the epithet honours

, a

Carthaginian The term Carthaginian ( ) usually refers to the civilisation of ancient Carthage. It may also refer to: * Punic people, the Semitic-speaking people of Carthage * Punic language The Punic language, also called Phoenicio-Punic or Carthaginian, i ...

punic The Punic people, usually known as the Carthaginians (and sometimes as Western Phoenicians), were a Semitic people who migrated from Phoenicia to the Western Mediterranean during the Early Iron Age. In modern scholarship, the term ''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.

Paleoecology

''Tataouinea'' was discovered in the Jebel El Mra Member or the nearby

Oum ed Diab Member The Oum ed Diab Member is a middle-upper Albian geologic member, part of the Aïn el Guettar Formation of Tunisia. Dinosaur remains are among the fossils that have been recovered from the formation.Weishampel, et al. (2004). "Dinosaur distributi ...

of the

Aptian The Aptian is an age (geology), age in the geologic timescale or a stage (stratigraphy), stage in the stratigraphic column. It is a subdivision of the Early Cretaceous, Early or Lower Cretaceous epoch (geology), Epoch or series (stratigraphy), S ...

Albian The Albian is both an age (geology), age of the geologic timescale and a stage (stratigraphy), stage in the stratigraphic column. It is the youngest or uppermost subdivision of the Early Cretaceous, Early/Lower Cretaceous epoch (geology), Epoch/s ...

. It coexisted with an unnamed

carcharodontosaurid Carcharodontosauridae (carcharodontosaurids; from the Greek καρχαροδοντόσαυρος, ''carcharodontósauros'': "shark-toothed lizards") is a group of carnivorous theropod dinosaurs. In 1931, Ernst Stromer named Carcharodontosauridae ...

, ''

Carcharodontosaurus ''Carcharodontosaurus'' (; ) is a genus of large carnivorous theropod dinosaur that lived in Northwest Africa from about 100 to 94 million years ago during the Cenomanian age of the Cretaceous. Two teeth of the genus, now lost, were first des ...

'', ''

Spinosaurus ''Spinosaurus'' (; ) is a genus of large spinosaurid theropod dinosaurs that lived in what now is North Africa during the Cenomanian faunal stage, stage of the Late Cretaceous Period (geology), period, about 100 to 94 annum, million year ...

'', the

notosuchian Notosuchia is a clade of primarily Gondwanan mesoeucrocodylian Crocodylomorpha, crocodylomorphs that lived during the Jurassic and Cretaceous. Some phylogeny, phylogenies recover Sebecosuchia as a clade within Notosuchia, others as a sister group ...

Araripesuchus ''Araripesuchus'' is a genus of extinct crocodyliform that existed during the Cretaceous period of the late Mesozoic era some 125 to 66 million years ago. ''Araripesuchus'' is generally considered to be a notosuchian (belonging to the clade Mes ...

'', an unnamed

, an unnamed

iguanodont Ornithopoda () is a clade of ornithischian dinosaurs, called ornithopods (). They represent one of the most successful groups of herbivore, herbivorous dinosaurs during the Cretaceous. The most primitive members of the group were bipedal and rel ...

, an unnamed

ornithocheirid Anhangueridae (alternatively called Ornithocheiridae, meaning "bird hands") is a group of pterosaurs within the suborder Pterodactyloidea. These pterosaurs were among the last to possess teeth. Members that belong to this group lived from the ...

pterosaur Pterosaurs are an extinct clade of flying reptiles in the order Pterosauria. They existed during most of the Mesozoic: from the Late Triassic to the end of the Cretaceous (228 million to 66 million years ago). Pterosaurs are the earli ...

, an unnamed species of ''

Sarcosuchus ''Sarcosuchus'' (), from Ancient Greek σάρξ (''sárx''), meaning "flesh", and σούχος (''soúkhos''), meaning "crocodile", is an extinct genus of crocodyliform a that lived during the Early Cretaceous, from the late Hauterivian to the ...

'' and a species of

fish A fish (: fish or fishes) is an aquatic animal, aquatic, Anamniotes, anamniotic, gill-bearing vertebrate animal with swimming fish fin, fins and craniate, a hard skull, but lacking limb (anatomy), limbs with digit (anatomy), digits. Fish can ...

known as '' Mawsonia''.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.

References

{{Taxonbar, from1=Q17126082, from2=Q13798416 Rebbachisauridae Dinosaur genera Albian dinosaurs Fossil taxa described in 2013