Laurasiformes
Encyclopedia
Laurasiformes is an extinct clade
Clade
A clade is a group consisting of a species and all its descendants. In the terms of biological systematics, a clade is a single "branch" on the "tree of life". The idea that such a "natural group" of organisms should be grouped together and given a taxonomic name is central to biological...

 of camarasauromorph sauropods from the late Early Cretaceous
Early Cretaceous
The Early Cretaceous or the Lower Cretaceous , is the earlier or lower of the two major divisions of the Cretaceous...

 (Barremian
Barremian
The Barremian is an age in the geologic timescale between 130.0 ± 1.5 Ma and 125.0 ± 1.0 Ma). It is a subdivision of the Early Cretaceous epoch...

 to Albian
Albian
The Albian is both an age of the geologic timescale and a stage in the stratigraphic column. It is the youngest or uppermost subdivision of the Early/Lower Cretaceous epoch/series. Its approximate time range is 112.0 ± 1.0 Ma to 99.6 ± 0.9 Ma...

 stages) of Europe
Europe
Europe is, by convention, one of the world's seven continents. Comprising the westernmost peninsula of Eurasia, Europe is generally 'divided' from Asia to its east by the watershed divides of the Ural and Caucasus Mountains, the Ural River, the Caspian and Black Seas, and the waterways connecting...

 and North America
North America
North America is a continent wholly within the Northern Hemisphere and almost wholly within the Western Hemisphere. It is also considered a northern subcontinent of the Americas...

. It was named by Rafael Royo-Torres in 2009
2009 in paleontology
-Anomalocaridids:-Arachnids:-Insects:-Cephalopods:Three new species of extinct Octopoda discovered in 2009. The species - Keuppia hyperbolaris, Keuppia levante, and Styletoctopus annae - lived about 95 million years ago, and bear a strong resemblance to modern octopuses, suggesting that the...

. José Luis Barco Rodríguez (2010) found Aragosaurus
Aragosaurus
Aragosaurus was a genus of sauropod dinosaur from the Early Cretaceous period of Galve, province of Teruel, in the autonomous territory of Aragón, Spain....

, Galvesaurus, Phuwiangosaurus
Phuwiangosaurus
Phuwiangosaurus is the name given to a genus of dinosaur from the Early Cretaceous. It was a titanosaur which lived in Thailand. The type species, P. sirindhornae, was described by Martin, Buffetaut, and Suteethorn in 1994, it was named to honour Princess Maha Chakri Sirindhorn of Thailand on her...

, Tastavinsaurus
Tastavinsaurus
Tastavinsaurus is a genus of sauropod dinosaur belonging to the Titanosauriformes. It is based on a partial skeleton from the Early Cretaceous of Spain. The type species is Tastavinsaurus sanzi, named in honor of the Rio Tastavins in Spain and Spanish paleontologist Jose Luis Sanz....

, Venenosaurus
Venenosaurus
Venenosaurus named after the Poison Strip Member of the Cedar Mountain Formation in Utah, where the fossils were discovered by a Denver Museum of Natural History volunteer Tony DiCroce in 1998. Venenosaurus dicrocei was first described as a new species in 2001 by Virginia Tidwell, Kenneth...

and possibly Cedarosaurus
Cedarosaurus
Cedarosaurus was a nasal-crested macronarian dinosaur genus from the Early Cretaceous Period . It was a sauropod which lived in what is now Utah...

to be laurasiforms and in his analysis Laurasiformes was placed in a non-titanosauriform camarasauromorph position. José L. Carballido, Oliver W. M. Rauhut, Diego Pol and Leonardo Salgado (2011) suggested that Tehuelchesaurus
Tehuelchesaurus
Tehuelchesaurus is a genus of dinosaur. It is named in honor of the Tehuelche people native to the Argentinian province of Chubut, where it was first found....

and some of those taxa form two clade, both outside Titanosauriformes. Royo-Torres, Luis Alcalá and Alberto Cobos (2011) suggested that it contains the taxa Tastavinsaurus, Cedarosaurus and Venenosaurus and in this analysis Laurasiformes was placed within Titanosauriformes.
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