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How to Pronounce Allosauroidea
How to Pronounce Allosauroidea
Published: 2014/11/26
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Monster Allosauria
Monster Allosauria
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Monster Allosauria (Preview Version)
Monster Allosauria (Preview Version)
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Lourinhanosaurus - Video Learning - WizScience.com
Lourinhanosaurus - Video Learning - WizScience.com
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Torvosaurus Vs Longneck
Torvosaurus Vs Longneck
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Best Epic Battles - Allosaurus Vs Torvosaurus
Best Epic Battles - Allosaurus Vs Torvosaurus
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Metriacanthosaurus | Enciclopedia sobre Dinosaurios
Metriacanthosaurus | Enciclopedia sobre Dinosaurios
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Lourinhanosaurus: Dinosaur of the Day
Lourinhanosaurus: Dinosaur of the Day
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concavenator corcovatus EL EXTRAÑO  cazador de Cuenca
concavenator corcovatus EL EXTRAÑO cazador de Cuenca
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Allosaurs vs Tyrannosaurs
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Timelapse of The Hunting Partners
Timelapse of The Hunting Partners
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Lourinhanosaurus: I Know Dino Podcast Episode 122
Lourinhanosaurus: I Know Dino Podcast Episode 122
Published: 2017/03/30
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How to Pronounce Allotropize
How to Pronounce Allotropize
Published: 2014/11/27
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How to Pronounce Alloxantin
How to Pronounce Alloxantin
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Time Lapse "Allosaurus Sketch"
Time Lapse "Allosaurus Sketch"
Published: 2016/08/05
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How to Pronounce Allosome
How to Pronounce Allosome
Published: 2014/11/26
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Timelapse of "The Loving Allosaurus"
Timelapse of "The Loving Allosaurus"
Published: 2014/12/29
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What does allosaur mean?
Published: 2015/04/07
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How to Pronounce Allotheism
How to Pronounce Allotheism
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How to Pronounce Allotriomorphic
How to Pronounce Allotriomorphic
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How to Pronounce Allurance
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How to Pronounce Alloxanate
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How to Pronounce Allotriophagy
How to Pronounce Allotriophagy
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How to Pronounce All-Or-Nothing
How to Pronounce All-Or-Nothing
Published: 2014/11/26
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How to Pronounce Allosterically
How to Pronounce Allosterically
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How to Pronounce Allotropism
Published: 2014/11/27
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How to Pronounce Allots
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How to Pronounce Allotments
Published: 2014/11/26
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How to Pronounce Allotropise
How to Pronounce Allotropise
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How to Pronounce Alloquy
How to Pronounce Alloquy
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How to Pronounce Alloyage
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How to Pronounce Allotransplantation
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How to Pronounce Allylcysteine
How to Pronounce Allylcysteine
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How to Pronounce Alloreactive
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How to Pronounce Allosauridae
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How to Pronounce Allosaurs
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How to Pronounce Allosterism
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How to Pronounce Allosaur
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How to Pronounce Allosphere
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WIKIPEDIA ARTICLE

From Wikipedia, the free encyclopedia
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Allosauroids
Temporal range:
Middle JurassicLate Cretaceous, 175.6–70 Ma
Allosaurus skull SDNHM.jpg
Allosaurus fragilis skull, San Diego Natural History Museum
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Clade: Dinosauria
Order: Saurischia
Suborder: Theropoda
Clade: Carnosauria
Superfamily: Allosauroidea
Marsh, 1878
Type species
Allosaurus fragilis
Marsh, 1877
Subgroups[1]

Allosauroidea is a superfamily or clade of theropod dinosaurs which contains four families — the Metriacanthosauridae, Allosauridae, Carcharodontosauridae, and Neovenatoridae. The oldest-known allosauroid, Shidaisaurus jinae, appeared in the early Middle Jurassic (probably Bajocian stage) of China. The last known definitive surviving members of the group died out around 93 million years ago in Asia (Shaochilong) and South America (Mapusaurus), though the megaraptorans, including the late-surviving Orkoraptor of the Late Cretaceous (Maastrichtian stage), may belong to the group as well. Additional, but highly fragmentary, remains probably belonging to carcharodontosaurids have been found from the Campanian-Maastrichtian boundary (70-66 Ma ago) in Brazil.[2] Allosauroids had long, narrow skulls, large orbits, three-fingered hands, and usually had "horns" or ornamental crests on their heads. The most famous and best understood allosauroid is the North American genus Allosaurus.

Classification[edit]

Allosauroidea skull comparison
The cladogram of the classification of Allosauroidea

The clade Allosauroidea was originally proposed by Phil Currie and Zhao (1993; p. 2079), and later used as an undefined stem-based taxon by Paul Sereno (1997). Sereno (1998; p. 64) was the first to provide a stem-based definition for the Allosauroidea, defining the clade as "All neotetanurans closer to Allosaurus than to Neornithes." Kevin Padian (2007) used a node-based definition, defined the Allosauroidea as Allosaurus, Sinraptor, their most recent common ancestor, and all of its descendants. Thomas R. Holtz and colleagues (2004; p. 100) and Phil Currie and Ken Carpenter (2000), among others, have followed this node-based definition. However, in some analyses (such as Currie & Carpenter, 2000), the placement of the carcharodontosaurids relative to the allosaurids and sinraptorids is uncertain, and therefore it is uncertain whether or not they are allosauroids (Currie & Carpenter, 2000).

The cladogram presented here is simplified after the 2012 analysis by Carrano, Benson and Sampson after the exclusion of three "wildcard" taxa Poekilopleuron, Xuanhanosaurus and Streptospondylus.[1]

Allosauroidea

Metriacanthosauridae


Allosauria

AllosauridaeAllosaurus Revised.jpg


Carcharodontosauria

NeovenatoridaeGualicho NT small.jpg



CarcharodontosauridaeConcavenator corcovatus by Daniel Vidal 2012.png





CPT-1980[edit]

CPT-1980 is the museum catalog number for an isolated, 9.83 centimetres (3.87 in), allosauroid tooth crown currently housed at the Museo Fundación Conjunto Paleontológico de Teruel.[3] In 2009, the tooth was compared to another allosauroid tooth from Portugal that measured 12.7 centimetres (5.0 in). Analysis led to the conclusion that CPT-1980 is the largest theropod tooth ever discovered in Spain. This tooth was discovered by locals near Riodeva, Teruel in the Villar del Arzobispo Formation, more specifically known as RD-39. The rocks have been dated to the Tithonian-Berriasian stages (Late Jurassic-Early Cretaceous).[3]

References[edit]

  1. ^ a b Carrano, M. T.; Benson, R. B. J.; Sampson, S. D. (2012). "The phylogeny of Tetanurae (Dinosauria: Theropoda)". Journal of Systematic Palaeontology. 10 (2): 211–300. doi:10.1080/14772019.2011.630927. 
  2. ^ Fernandes de Azevedo, R. P., Simbras, F. M., Furtado, M. R., Candeiro, C. R. A., & Bergqvist, L. P. (2012). First Brazilian carcharodontosaurid and other new theropod dinosaur fossils from the Campanian–Maastrichtian Presidente Prudente Formation, São Paulo State, southeastern Brazil. Cretaceous Research.
  3. ^ a b R. Royo-Torres, A. Cobos, L. Alcalá. "Diente de un gran dinosaurio terópodo (Allosauroidea) de la Formación Villar del Arzobispo (Titónico-Berriasiense) de Riodeva (España)" Estudios Geológicos 65(1) enero-junio 2009.


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