Turiasauria

Turiasauria is an unranked clade of basal sauropod dinosaurs known from Middle Jurassic to Early Cretaceous deposits in Europe, North America, and Africa.

Turiasaurs
Temporal range: Middle Jurassic - Early Cretaceous, 164–125 Ma
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Clade: Dinosauria
Order: Saurischia
Suborder: Sauropodomorpha
Clade: Sauropoda
Clade: Eusauropoda
Clade: Turiasauria
Royo-Torres et al., 2006
Genera[3]

Description

Turiasauria was originally erected by Royo-Torres et al. (2006) to include Turiasaurus, Galveosaurus and Losillasaurus, all of which hail from the Villar del Arzobispo Formation (Tithonian-Berriasian) of Spain. Turiasuria was defined by the authors as "all Eusauropoda closer to Turiasaurus riodevensis than to Saltasaurus loricatus".[4] Cladistic analysis (Royo-Torres et al., 2006; 1927) of 309 characters and 33 taxa suggests that the turiasaurians lie outside the Neosauropoda and form a monophyletic group. The clade is diagnosed by the presence of vertical neural spines, posterior centroparapohyseal laminae on the dorsal vertebrae, the absence of pre- and postspinal laminae on the dorsal vertebrae, the absence of a scapular acromial crest, the presence of a prominent humeral deltopectoral crest, medial deflection of the proximal end of the humerus, and a distinct vertical ridge on the caudal side of the distal half of the ulna.

Paleobiogeography

Turiasaurs were initially considered confined to Europe, with Turiasaurus from Spain and Zby from Portugal[5], and the tooth taxa Cardiodon, Neosodon, and Oplosaurus were referred to the clade, but additional members were found in North America and Africa.

Remains of a very large species of turiasaur, not yet formally identified, have recently been unearthed in Charente, West France.[6]

Classification

Turiasaurus demonstrates that the evolution of enormous body size was not restricted to neosauropod clades such as the Diplodocidae and Titanosauria, but developed independently at least once in a lineage of more basal sauropods, the turiasaurians.

A 2009 thesis published by José Barco proposed that neither Galveosaurus nor Losillasaurus were turiasaurians.[7] Later, a master thesis by Francisco Gascó (2009) and Royo-Torres et al. (2009) reaffirmed the validity of Turiasauria.[8][9]

References

  1. ^ Xing, L.; Miyashita, T.; Currie, P. J.; You, H.; Zhang, J.; Dong, Z. (2015). "A New Basal Eusauropod from the Middle Jurassic of Yunnan, China, and Faunal Compositions and Transitions of Asian Sauropodomorph Dinosaurs". Acta Palaeontologica Polonica. 60 (1): 145–154. doi:10.4202/app.2012.0151.
  2. ^ Mannion PD. 2019. A turiasaurian sauropod dinosaur from the Early Cretaceous Wealden Supergroup of the United Kingdom. PeerJ 7:e6348 https://doi.org/10.7717/peerj.6348
  3. ^ Holtz, Thomas R. Jr. (2012) Dinosaurs: The Most Complete, Up-to-Date Encyclopedia for Dinosaur Lovers of All Ages, Winter 2011 Appendix.
  4. ^ Royo-Torres, R.; Cobos, A.; Alcalá, L. (2006). "A Giant European Dinosaur and a New Sauropod Clade". Science. 314 (5807): 1925–1927. Bibcode:2006Sci...314.1925R. doi:10.1126/science.1132885. PMID 17185599.
  5. ^ Mateus, Octávio; Mannion, Philip D.; Upchurch, Paul (16 April 2014). "Zby atlanticus, a new turiasaurian sauropod (Dinosauria, Eusauropoda) from the Late Jurassic of Portugal". Journal of Vertebrate Paleontology. 34 (3): 618–634. doi:10.1080/02724634.2013.822875.
  6. ^ Allain, Ronan, editor (2017): Dinosaures. Les géants du vignoble. Angoulême: Eidola éditions, 248 p.
  7. ^ José Luis Barco Rodríguez, Sistemática e implicaciones filogenéticas y paleobiogeográficas del saurópodo Galvesaurus herreroi (Formación Villar del Arzobispo, Galve, España), 2009, Universidad de Zaragoza.
  8. ^ Gascó, F (2009): Sistemática y anatomía funcional de Losillasaurus giganteus Casanovas, Santafé & Sanz, 2001 (Turiasauria, Sauropoda). Universidad Autónoma de Madrid.
  9. ^ Royo-Torres, R.; Cobos, A.; Aberasturi, A.; Espilez, E.; Fierro, I.; González, A.; Luque, L.; Mampel; Alcalá, L. (2009). "High European sauropod dinosaur diversity during Jurassic-Cretaceous transition in Riodeva (Teruel, Spain)". Palaeontology. 52 (5): 1009–1027. doi:10.1111/j.1475-4983.2009.00898.x.

Sources

  • Barco, J. L., Canudo, J. L., Cuenca-Bescós, G. & Ruíz-Omeñaca, J. I., (2005): Un nuevo dinosaurio saurópodo, Galvesaurus herreroi gen. nov., sp. nov., del tránsito Jurásico-Cretácico en Galve (Teruel, NE de España). Naturaleza Aragonesa: Vol. 15, pp 4–17
  • Casanovas, M. L.; Santafe, J. V.; Sanz, J. L. (2001). "Losillasaurus giganteus, un nuevo saurópodo del tránsito Jurásico-Cretácico de la Cuenca de "Los Serranos" (Valencia, España)". Paleontologia I Evolució (32–33): 99–122.

External links

Atlasaurus

Atlasaurus is a genus of sauropod dinosaurs from Middle Jurassic (Bathonian to Callovian stages) beds in North Africa.

Brasilotitan

Brasilotitan is a genus of titanosaurian sauropod dinosaur from the Late Cretaceous (early Maastrichtian) Adamantina Formation of Brazil. The type species is Brasilotitan nemophagus.

Cardiodon

Cardiodon (meaning "heart tooth", in reference to the shape) was a herbivorous genus of sauropod dinosaur, based on a tooth from the late Bathonian-age Middle Jurassic Forest Marble Formation of Wiltshire, England. Historically, it is very obscure and usually referred to Cetiosaurus, but recent analyses suggest that it is a distinct genus, and possibly related to Turiasaurus. Cardiodon was the first sauropod genus named.

Diplodocinae

Diplodocinae is an extinct subfamily of diplodocid sauropods that existed from the Late Jurassic to Early Cretaceous of North America, Europe and South America, about 161.2 to 136.4 million years ago. Genera within the subfamily include Tornieria, Supersaurus, Leinkupal, Galeamopus, Diplodocus, Kaatedocus and Barosaurus.Cladogram of the Diplodocidae after Tschopp, Mateus, and Benson (2015).

Eusauropoda

Eusauropoda (meaning "true sauropods") is a derived clade of sauropod dinosaurs. Eusauropods represent the node-based group that includes all descendant sauropods starting with the basal eusauropods of Shunosaurus, and possibly Barapasaurus, and Amygdalodon, but excluding Vulcanodon and Rhoetosaurus. The Eusauropoda was coined in 1995 by Paul Upchurch to create a monophyletic new taxonomic group that would include all sauropods, except for the vulcanodontids.Eusauropoda are herbivorous, quadrupedal, and have long necks. They have been found in South America, Europe, North America, Asia, Australia, and Africa. The temporal range of Eusauropoda ranges from the early Jurassic to the Latest Cretaceous periods. The most basal forms of eusauropods are not well known and because the cranial material for the Vulcanodon is not available, and the distribution of some of these shared derived traits that distinguish Eusauropoda is still completely clear.

Ferganasaurus

Ferganasaurus was a genus of dinosaur first formally described in 2003 by Alifanov and Averianov. The type species is Ferganasaurus verzilini. It was a sauropod similar to Rhoetosaurus. The fossils were discovered in 1966 in Kyrgyzstan from the Balabansai Formation and date to the Callovian stage of the Middle Jurassic.

Flagellicaudata

Flagellicaudata is a clade of Dinosauria. It belongs to Sauropoda and includes two families, the Dicraeosauridae and the Diplodocidae.

Galvesaurus

Galvesaurus or Galveosaurus is a genus of extinct sauropod dinosaur from the Late Jurassic or Early Cretaceous period. Fossils of the only known species, G. herreroi, were found in Galve, Spain, hence its generic name, "Galve lizard". The specific name G. herreroi honours the discoverer, José María Herrero.

Gravisauria

Gravisauria is a clade of sauropod dinosaurs consisting of some genera, Vulcanodontidae and Eusauropoda.

Huangshanlong

Huangshanlong is a genus of mamenchisaurid dinosaurs native to the Anhui province of China. It contains a single species, Huangshanlong anhuiensis. H. anhuiensis represents, along with Anhuilong and Wannanosaurus, one of three dinosaurs fround in Anhui province.

Kaijutitan

Kaijutitan (meaning "Kaiju titan" after the type of Japanese movie monsters) is a genus of basal titanosaur dinosaur from the Sierra Barrosa Formation from Neuquén Province in Argentina. The type and only species is Kaijutitan maui.

Losillasaurus

Losillasaurus (meaning "Losilla lizard") is a genus of sauropod dinosaur from the Jurassic-Cretaceous boundary in the southeast of Spain. The type species of the turiasaurian Losillasaurus giganteus was discovered in the Los Serranos basin in Valencia and formally described by Casanovas, Santafé and Sanz in 2001. The material is from a subadult and includes part of a skull; complete cervical, dorsal, sacral, and caudal vertebrae as well as several fragments; skeletal elements from the limbs including a humerus, ulna, radius, and metacarpal; sternal plates; and from the pelvis: the ilium, ischium, and pubis. The genus is characterized by the dimension and shape of the neural spine of the proximal caudal vertebrae. The humerus is 143 centimetres (56 in) long, which despite being from a subadult specimen is within 20% of the size of Paralititan. The size estimation proposed by Francisco Gascó in his master thesis is 15–18 m (49–59 ft) and 12-15 tons.

Mierasaurus

Mierasaurus is an extinct genus of sauropod dinosaur from the Early Cretaceous of Utah, United States. The taxon was first described and named in 2017 by Rafael Royo-Torres and colleagues, from a mostly complete skeleton including a disarticulated partial skull and mandible, teeth, multiple vertebrae from along the length of the body, both scapulae, radius and ulna bones, a left manus, a complete pelvis, both femora and the entire left hindlimb. Additionally, they also referred a lower jaw and femur from juvenile individuals, which were found nearby, to the genus. Collectively, Mierasaurus is among the most completely known North American sauropods. The genus name honours Bernardo de Miera y Pacheco, the first European scientist to enter what is now Utah. The type species for Mierasaurus is Mierasaurus bobyoungi, named after Robert Glen Young, a paleontologist who researched the Early Cretaceous of Utah.Along with its closest relative Moabosaurus, also from the Early Cretaceous of Utah, Mierasaurus is among the last-surviving members of the Turiasauria, an otherwise Jurassic and European group which can be distinguished by heart-shaped teeth, slender humeri, and the presence of an extra depression on the surface of the ulnae, among other characteristics. Mierasaurus differs from Moabosaurus in characteristics such as lacking vertical ridges on its teeth, having relatively smooth bottom surfaces on its cervical vertebrae, having cervical ribs that do not prominently split into two at their tips, and lacking a bulge on the side of the femur. It is probable that the ancestors of Mierasaurus and Moabosaurus migrated, shortly before the emergence of the former, to western North America from surviving populations of turiasaurs in either Europe or eastern North America.

Moabosaurus

Moabosaurus (meaning "Moab reptile") is a genus of turiasaurian sauropod dinosaur from the Early Cretaceous Cedar Mountain Formation of Utah, United States.

Neosodon

Neosodon (meaning "new tooth") was a genus of sauropod dinosaur from the Late Tithonian-age Upper Jurassic Sables et Gres a Trigonia gibbosa of Départment du Pas-de-Calais, France. It has never been formally given a species name, but is often seen as N. praecursor, which actually comes from a different animal. Often in the past, it had been assigned to the wastebasket taxon Pelorosaurus, but restudy has suggested that it could be related to Turiasaurus, a roughly-contemporaneous giant Spanish sauropod.

Pilmatueia

Pilmatueia is a diplodocoid sauropod belonging to the family Dicraeosauridae that lived in Argentina during the Early Cretaceous.

Tambatitanis

Tambatitanis is an extinct genus of titanosauriform dinosaur from the Early Cretaceous (probably early Albian) of Japan. It is known from a single type species, Tambatitanis amicitiae. It was probably around 14 meters long and its mass was estimated at some 4 tonnes. It was a basal titanosauriform and possibly belonged to the Euhelopodidae.

Turiasaurus

Turiasaurus (meaning "Turia lizard"; Turia is the Latin name of Teruel) is a genus of sauropod dinosaurs. It is known from a single fossil specimen representing the species Turiasaurus riodevensis, found in the Kimmeridgian Villar del Arzobispo Formation of Teruel, Spain.

Zby

Zby is an extinct genus of turiasaurian sauropod dinosaur known from the Late Jurassic (late Kimmeridgian stage) of the Lourinhã Formation, central west Portugal. It contains a single species, Zby atlanticus. It is named after Georges Zbyszewski, who studied the geology and paleontology of Portugal.

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