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Titanosaurs were a diverse group of sauropod dinosaurs, including genera from all seven continents. The titanosaurs were the last surviving group of long-necked sauropods, with taxa still thriving at the time of the extinction event at the end of the Cretaceous. This group includes some of the largest land animals known to have ever existed, such as Patagotitan, estimated at 37 m (121 ft) long with a weight of 69 tonnes, and the comparably-sized Argentinosaurus and Puertasaurus from the same region.
Aeolosaurus is a genus of titanosaurian sauropod dinosaur from the Late Cretaceous Period of what is now South America. Like most sauropods, it would have been a quadrupedal herbivore with a long neck and tail. Aeolosaurus is well known for a titanosaur, as it is represented by the remains of several individuals belonging to at least two species. However, like most titanosaurs, no remains of the skull are known. The holotype of Aeolosaurus rionegrinus consists of a series of seven tail vertebrae, as well as parts of both forelimbs and the right hindlimb. It was discovered in the Angostura Colorada Formation in Argentina, which dates from the Campanian stage of the Late Cretaceous, about 83 to 74 million years ago. The species A. maximus was transferred over to the new genus Arrudatitan in 2021.
Agustinia is a genus of sauropod dinosaur from the Early Cretaceous of South America. The genus contains a single species, A. ligabuei, known from a single specimen that was recovered from the Lohan Cura Formation of Neuquén Province in Argentina. It lived about 116–108 million years ago, in the Aptian–Albian stages of the Early Cretaceous Period.
Rodolfo Aníbal Coria, is an Argentine paleontologist.
Gondwanatitan was a titanosaurian sauropod dinosaur. Gondwanatitan was found in Brazil, at the time part of the southern supercontinent Gondwana, in the late Cretaceous Period. Like some other sauropods, Gondwanatitan was tall and ate tough shoots and leaves from the tops of trees. G. faustoi's closest relative was Aeolosaurus.
Quilmesaurus is a genus of carnivorous abelisaurid theropod dinosaur from the Patagonian Upper Cretaceous of Argentina. It was a member of Abelisauridae, closely related to genera such as Carnotaurus. The only known remains of this genus are leg bones which share certain similarities to a variety of abelisaurids. However, these bones lack unique features, which may render Quilmesaurus a nomen vanum.
Rocasaurus is a genus of titanosaurian sauropod that lived in South America. Rocasaurus was discovered in Argentina in 2000, within the Allen Formation which is dated to be middle Campanian to early Maastrichtian in age. This genus grew up to 8 metres (26 ft) long, making it one of the smaller sauropods. It seems to be closely related to saltasaurid dinosaurs, like Saltasaurus and Neuquensaurus.
The Plottier Formation is a geologic formation that outcrops in the Argentine Patagonian provinces of Río Negro and Neuquén. It is the younger of two formations belonging to the Río Neuquén Subgroup within the Neuquén Group of the Neuquén Basin, with the oldest rocks dating from the late Coniacian and its youngest maybe from the very start of the Santonian. Formerly, that subgroup was treated as a formation, and the Plottier Formation was known as the Plottier Member.
Pellegrinisaurus is a genus of titanosaurian sauropod dinosaur that lived in South America during the Late Cretaceous period. The holotype was found in the Allen Formation, Argentina.
Rinconsaurus is a genus of titanosaur sauropod dinosaur from the Late Cretaceous in what is now Argentina. The type species, Rinconsaurus caudamirus, was described by Calvo and Riga in 2003, and is based on three partial skeletons.
The Anacleto Formation is a geologic formation with outcrops in the Argentine Patagonian provinces of Mendoza, Río Negro, and Neuquén. It is the youngest formation within the Neuquén Group and belongs to the Río Colorado Subgroup. Formerly that subgroup was treated as a formation, and the Anacleto Formation was known as the Anacleto Member.
Uberabatitan is a genus of titanosaurian sauropod dinosaur from the Late Cretaceous of Brazil. It is known from bones including neck, back, and tail vertebrae, pelvic bones, and limb bones. These fossils were found in the uppermost portion of the Maastrichtian-age Serra da Galga Formation of the Bauru Group, in Uberaba, Minas Gerais. The type species, described by Salgado and Carvalho in 2008, is U. ribeiroi. To date, it is the most recent titanosaur from Bauru Group rocks; other titanosaurs from the Bauru Group, including Baurutitan and Trigonosaurus, come from lower levels.
Aeolosaurini is an extinct clade of titanosaurian dinosaurs known from the Cretaceous period of Argentina and Brazil. Rodrigo M. Santucci and Antonio C. de Arruda-Campos (2011) in their cladistic analysis found Aeolosaurus, Gondwanatitan, Maxakalisaurus, Panamericansaurus and Rinconsaurus to be aeolosaurids.
Saltasaurinae is a subfamily of titanosaurian sauropods known from the late Cretaceous period of South America, India and Madagascar.
Bonapartenykus is a monospecific genus of alvarezsauroid dinosaur from Argentina that lived during the Late Cretaceous (Campanian-Maastrichtian) in what is now the upper Allen Formation of the Río Negro Province. The type and only species, Bonapartenykus ultimus, is known from a nearly articulated but partial skeleton that was found in close association to two incomplete eggs and several clusters of eggshells belonging to the oogenus Arriagadoolithus. Bonapartenykus was named in 2012. It has an estimated length of 2.5–3.3 m (8.2–10.8 ft) and weight of 43–72 kg (95–159 lb), making it the largest member of the clade Alvarezsauroidea.
Notocolossus is a genus of titanosaurian sauropod dinosaur from late Cretaceous strata of Mendoza Province, Argentina.
The Ernesto Bachmann Paleontological Museum (MEB) in Villa El Chocón, Neuquén Province, Argentina, is a municipal museum dedicated to the paleontology, archaeology and history of Villa El Chocón and its surroundings.
Teratopodus is an ichnogenus of titanosaurian sauropod footprint. It includes a single species, T. malarguensis, known from prints found in the Late Cretaceous Anacleto Formation of Argentina. The Teratopodus tracks represent some of the best sauropod pes tracks currently known from South America.
References
- ↑ "Leonardo SALGADO - Diccionario de científicos argentinos Dra. Cecilia Grierson". Cientificos argentinos. CAICYT. Retrieved 26 May 2019.
- 1 2 Coria, Rodolfo Aníbal; Salgado, Leonardo (September 1995). "A new giant carnivorous dinosaur from the Cretaceous of Patagonia". Nature . 377 (6546): 224–226. doi:10.1038/377224a0 . Retrieved 5 January 2025.
- ↑ Pérez-Moreno, Agustín; Salgado, Leonardo; Carballido, José L.; Otero, Alejandro; Pol, Diego (10 April 2024). "A new titanosaur from the La Colonia Formation (Campanian-Maastrichtian), Chubut Province, Argentina". Historical Biology : 1–20. doi:10.1080/08912963.2024.2332997. ISSN 0891-2963 . Retrieved 9 January 2025– via Taylor and Francis Online.
- 1 2 Hechenleitner, E. Martín; Leuzinger, Léa; Martinelli, Agustín G.; Rocher, Sebastián; Fiorelli, Lucas E.; Taborda, Jeremías R. A.; Salgado, Leonardo (27 October 2020). "Two Late Cretaceous sauropods reveal titanosaurian dispersal across South America". Communications Biology . 3 (1): 1–13. doi:10.1038/s42003-020-01338-w. ISSN 2399-3642 . Retrieved 1 February 2025.
- ↑ Salgado, Leonardo; Canudo, José I.; Garrido, Alberto C.; Moreno-Azanza, Miguel; Martínez, Leandro C. A.; Coria, Rodolfo Aníbal; Gasca, José M. (16 February 2017). "A new primitive Neornithischian dinosaur from the Jurassic of Patagonia with gut contents". Scientific Reports . 7 (1): 42778. doi:10.1038/srep42778. ISSN 2045-2322 . Retrieved 1 February 2025.
- ↑ Carvalho, Ismar de Souza; Salgado, Leonardo; Lindoso, Rafael Matos; De Araújo-Júnior, Hermínio Ismael; Nogueira, Francisco Cézar Costa; Soares, José Agnelo (April 2017). "A new basal titanosaur (Dinosauria, Sauropoda) from the Lower Cretaceous of Brazil". Journal of South American Earth Sciences . 75: 74–84. doi:10.1016/j.jsames.2017.01.010 . Retrieved 11 January 2025– via Elsevier Science Direct.
- ↑ de Souza Carvalho, Ismar; dos Santos Avilla, Leonardo; Salgado, Leonardo (December 2003). "Amazonsaurus maranhensis gen. et sp. nov. (Sauropoda, Diplodocoidea) from the Lower Cretaceous (Aptian–Albian) of Brazil". Cretaceous Research . 24 (6): 697–713. doi:10.1016/j.cretres.2003.07.005 . Retrieved 6 January 2025– via Elsevier Science Direct.
- ↑ Coria, Rodolfo Aníbal; Salgado, Leonardo (19 September 1996). "A basal iguanodontian (Ornithischia: Ornithopoda) from the Late Cretaceous of South America". Journal of Vertebrate Paleontology . 16 (3): 445–457. doi:10.1080/02724634.1996.10011333. ISSN 0272-4634 . Retrieved 5 January 2025– via Taylor and Francis Online.
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