| 翻訳と辞書 |
| Araripesuchus wegeneri ： ウィキペディア英語版 |
Araripesuchus wegeneri
''Araripesuchus'' is an extinct genus of notosuchian crocodyliform that lived in Gondwana during the Cretaceous Period. The genus includes at least five species found throughout Western Africa and South America. The relationship of the individual species within this genus is hotly debated, specifically, the placement of ''Araripesuchus wegeneri''.〔Ortega F., Z. Gasparini, A. D. Buscalioni, and J. O. Calvo. 2000. A new species of Araripesuchus (Crocodylomorpha, Mesoeucrocodylia) from the Lower Cretaceous of Patagonia (Argentina). Journal of Vertebrate Paleontology 20:57–76.〕〔Turner, A. H. 2006. Osteology and phylogeny of a new species of Araripesuchus (Crocodyliformes: Mesoeucrocodylia) from the Late Cretaceous of Madagascar. Historical Biology 18:255–369.〕〔Sereno, P. C., and H. C. E. Larsson. 2009. "Cretaceous Crocodyliforms from the Sahara". ''ZooKeys'' 28:1–144.〕〔Pol, D. Nascimento P. M., Carvalho A. B., Riccomini C., Pires-Domingues R. A., and H. Zaher. 2014. "A New Notosuchian from the Late Cretaceous of Brazil and the Phylogeny of Advanced Notosuchians". ''PLoS ONE'' 9(4): e93105. doi:10.1371/journal. pone.0093105〕 ''A. wegeneri'' is a small bodied crocodyliform characterized by relatively elongate limbs, an upright gait, and marked heterodonty.〔 The tooth morphology, when combined with tooth wear and orientation, suggests that this animal may have been an omnivore or herbivore. Additionally, the gracile limbs and their orientation imply that this was a terrestrial animal. These features demonstrate that ''Araripesuchus wegeneri'' stands in stark contrast to its modern day relatives, crocodiles and alligators.
==Geologic setting==
''Araripesuchus wegeneri'' was originally recovered from northeastern Niger in 1966 from the Gadoufaoua locality.〔Buffetaut, E., and P. Taquet. 1979. "An early Cretaceous terrestrial crocodilian and the opening of the South Atlantic". ''Nature'' 280:486–487.〕 Sereno and Larsson (2009) described additional skeletal material from the Elrhaz Formation of Niger, located along the western margin of the Ténéré Desert. The Elrhaz Formation, part of the larger Tegma Group, is Lower Cretaceous (Aptian-Albian) in age and is approximately 110 million years old.〔 The Elrhaz Formation is composed of primarily cross-bedded fluvial sandstones and has yielded a diverse vertebrate fossil assemblage, including theropods, sauropods, ornithischians, and crocodyliforms.〔Sereno P. C., and S. L. Brusatte. 2008. Basal abelisaurid and carcharodontosaurid theropods from the Lower Cretaceous Elrhaz Formation of Niger. Acta Palaeontologica Polonica 53:15–46.〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
■ウィキペディアで「Araripesuchus wegeneri」の詳細全文を読む
スポンサード リンク
| 翻訳と辞書 : 翻訳のためのインターネットリソース |
Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.
|
|