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| - thumb|400pxEl Thecodontosaurus era un dinosaurio primitivo del sur de Inglaterra y tenía el tamaño de un perro grande. Tenía una larga cola que usaba para mantener el equilibrio y un cuello relativamente corto, pero muy esbelto. Su cráneo era bastante alargado. Como tenía los miembros delanteros muy largos, podía caminar perfectamente a cuatro patas. En el cráneo tenía unos dientes pequeños y romos que usaba para triturar la vegetación. Las garras de las patas delanteras eran bastante grandes. Categoría:Reptiles Categoría:Dinosaurios Categoría:Saurisquios Categoría:Prosaurópodos Categoría:Fauna del Triásico
- Thecodontosaurus ("socket-tooth lizard") is a genus of herbivorous dinosaur which lived during the late Triassic Period (Norian and/or Rhaetian age). Its remains are known mostly from Triassic "fissure fillings" in South England and Wales. On average, it was 1.2 metres (3.9 ft) long, 30 centimetres (12 in) tall, and weighed 11 kilograms (24 lb). In 2007, a paper by Yates, Galton, and Kermack put forth the claim that Thecodontosaurus caducus belongs to a different genus, which they have named Pantydraco.
- In the autumn of 1834 surgeon Henry Riley and curator of the Bristol Institution Samuel Stutchbury began to excavate "saurian remains" at the quarry of Durdham Down, at Clifton, presently a part of Bristol. In 1834 and 1835 they briefly reported on the finds. They provided their initial description in 1836, naming a new genus: Thecodontosaurus. The name is derived from Greek thekè, "socket", and odous, "tooth", a reference to the fact that the roots of the teeth were not fused with the jaw bone, as in present lizards, but positioned in separate tooth sockets. Thecodontosaurus was the fifth dinosaur named, after Megalosaurus, Iguanadon, Straeptospondylus
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| - thumb|400pxEl Thecodontosaurus era un dinosaurio primitivo del sur de Inglaterra y tenía el tamaño de un perro grande. Tenía una larga cola que usaba para mantener el equilibrio y un cuello relativamente corto, pero muy esbelto. Su cráneo era bastante alargado. Como tenía los miembros delanteros muy largos, podía caminar perfectamente a cuatro patas. En el cráneo tenía unos dientes pequeños y romos que usaba para triturar la vegetación. Las garras de las patas delanteras eran bastante grandes. Categoría:Reptiles Categoría:Dinosaurios Categoría:Saurisquios Categoría:Prosaurópodos Categoría:Fauna del Triásico
- In the autumn of 1834 surgeon Henry Riley and curator of the Bristol Institution Samuel Stutchbury began to excavate "saurian remains" at the quarry of Durdham Down, at Clifton, presently a part of Bristol. In 1834 and 1835 they briefly reported on the finds. They provided their initial description in 1836, naming a new genus: Thecodontosaurus. The name is derived from Greek thekè, "socket", and odous, "tooth", a reference to the fact that the roots of the teeth were not fused with the jaw bone, as in present lizards, but positioned in separate tooth sockets. Thecodontosaurus was the fifth dinosaur named, after Megalosaurus, Iguanadon, Straeptospondylus File:Tcdntsrs aqq.jpg and Hylaeosaurus, though Riley and Stutchbury were not aware of this, the very concept Dinosauria only being created in 1842. In 1843 John Morris in his catalogue of British fossils provides a complete species name: Thecodontosaurus antiquus. The specific epithet, "antiquus", means "ancient" in Latin. The original type specimen or holotype of Thecodontosaurus, BCM 1, a lower jaw, fell victim to heavy World War II bombings by the Germans. Many remains of this dinosaur and other material related to it were destroyed in November 1940 during the Bristol Blitz. However, most bones were salvaged: 184 are today part of the collection of the Bristol City Museum and Art Gallery. Also, later some more remains were found near Bristol at Tytherington. At present in total about 245 fragmentary specimens are known, representing numerous individuals. In 1985 Peter Galton designated another lower jaw, a right dentary, as the neotype, BCM 2. The remains have been found in chalkstone infillings, breccia deposited in fissures in older rocks. The age of these deposits was once estimated as old as the late Carnian but recent studies indicate that they date from the Rhaetian.
- Thecodontosaurus ("socket-tooth lizard") is a genus of herbivorous dinosaur which lived during the late Triassic Period (Norian and/or Rhaetian age). Its remains are known mostly from Triassic "fissure fillings" in South England and Wales. On average, it was 1.2 metres (3.9 ft) long, 30 centimetres (12 in) tall, and weighed 11 kilograms (24 lb). Thecodontosaurus had a rather short neck supporting a fairly large skull with quite big eyes. Its jaws contained many small- to medium-sized, serrated, leaf-shaped teeth. This dinosaur's hands and feet each had five digits, and the hands were long and rather narrow with an extended claw on each. This dinosaur's front limbs were much shorter than the legs, and its tail was much longer than the head, neck and body put together. Although not actually the earliest member of the group, Thecodontosaurus is the most primitive well-known representative of the sauropodomorph dinosaurs. Originally it was included under the Prosauropoda (Upchurch 1998) but more recently it has been suggested that Thecodontosaurus and its relatives were prior to the prosauropod-sauropod split (Yates & Kitching 2003). New reconstructions show that its neck is proportionally shorter than in more advanced early sauropodomorphs. The original type specimen of Thecodontosaurus was a victim of World War II bombings by the Germans. The remains of this dinosaur and other material related to it were destroyed in 1940. However, more remains have been found at a number of localities, including Bristol. Some of this new material pertains to a juvenile specimen that may belong to a distinct species, Thecodontosaurus caducus Yates, 2003. The dinosaur Agrosaurus macgillivrayi (Seeley, 1891), once thought to be from Australia, but more likely from England and misidentified, is probably synonymous with Thecodontosaurus antiquus (Vickers-Rich et al., 1999). In 2007, a paper by Yates, Galton, and Kermack put forth the claim that Thecodontosaurus caducus belongs to a different genus, which they have named Pantydraco.
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