Autor: Benson, R.B.J. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: A new large-bodied theropod dinosaur from the Middle Jurassic of Warwickshire, United Kingdom
Autorzy:: Benson, R.B.J.
Radley, J.D.
Powiązania:: https://bibliotekanauki.pl/articles/22445.pdf
Data publikacji:: 2010
Wydawca:: Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:: large-bodied dinosaur
dinosaur
new dinosaur
theropod dinosaur
Middle Jurassic
Jurassic
Warwickshire
United Kingdom
paleontology
Dinosauria
Theropoda
Tetanurae
Megalosaurus
Cruxicheiros
Bathonian
Chipping Norton Limestone Formation
Opis:: Previously undocumented postcranial material from the Chipping Norton Limestone Formation (Middle Jurassic: Lower Bathonian) of Cross Hands Quarry, near Little Compton, Warwickshire represents a new large−bodied theropod dinosaur, distinct from the contemporaneous Megalosaurus bucklandii. Cruxicheiros newmanorum gen. et sp. nov. is diagnosed by a single autapomorphy, the presence of a proximomedially inclined ridge within the groove that marks the lateral extent of the posterior flange of the femoral caput (trochanteric fossa). C. newmanorum shows three tetanuran features: widely separated cervical zygapophyses, a swollen ridge on the lateral surface of the iliac blade and an anterior spur of the caudal neural spines. However, due to fragmentary preservation its affinities within Tetanurae remain uncertain: phylogenetic analysis places it as the most basal tetanuran, the most basal megalosauroid (= spinosauroid) or the most basal neotetanuran.
Źródło:: Acta Palaeontologica Polonica; 2010, 55, 1
0567-7920
Pojawia się w:: Acta Palaeontologica Polonica
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: A reassessment of Kelmayisaurus petrolicus, a large theropod dinosaur from the Early Cretaceous of China
Autorzy:: Brusatte, S.L.
Benson, R.B.J.
Xu, X.
Powiązania:: https://bibliotekanauki.pl/articles/21593.pdf
Data publikacji:: 2012
Wydawca:: Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:: paleontology
Kelmayisaurus petrolicus
large theropod dinosaur
theropod dinosaur
Early Cretaceous
China
Dinosauria
Theropoda
Carcharodontosauridae
anatomy
Cretaceous
Opis:: The Early Cretaceous fossil record of large−bodied theropods from Asia is poor, hindering comparison of Asian predatory dinosaur faunas with those from other continents. One of the few large Asian theropod specimens from this interval is a partial skull (maxilla and dentary) from the Lianmugin Formation (?Valanginian–Albian), the holotype of Kelmayisaurus petrolicus. Most authors have either considered this specimen as an indeterminate basal tetanuran or a nomen dubium. We redescribe K. petrolicus and note that it possesses a single autapomorphy (a deep accessory groove on the lateral surface of the anterior dentary), as well as a unique combination of characters that differentiates it from other theropods, affirming its validity. A phylogenetic analysis recovers K. petrolicus as a basal carcharodontosaurid, which is supported by various features: very deep interdental plates (a carcharodontosaurid synapomorphy), fused interdental plates (present in carchardontosaurids and a limited number of other theropods), and the absence of diagnostic features of other clades of large−bodied theropods such as abelisaurids, megalosauroids, and coelurosaurs. As such,Kelmayisaurusis the second known carcharodontosaurid from Asia, and further evidence that this clade represented a global radiation of large−bodied predators during the Early–mid Cretaceous.
Źródło:: Acta Palaeontologica Polonica; 2012, 57, 1
0567-7920
Pojawia się w:: Acta Palaeontologica Polonica
Dostawca treści:: Biblioteka Nauki

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