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Article: A tyrannosauroid dinosaur from the Upper Jurassic of Portugal

Publication: Palaeontology
Volume: 46
Part: 5
Publication Date: September 2003
Page(s): 903 910
Author(s): Oliver W. M. Rauhut
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How to Cite

RAUHUT, O. W. M. 2003. A tyrannosauroid dinosaur from the Upper Jurassic of Portugal. Palaeontology46, 5, 903–910.

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Fragmentary theropod remains from the Upper Jurassic (Kimmeridgian) of Guimarota, Portugal, represent a new taxon of theropod dinosaurs, Aviatyrannis jurassica gen. et sp. nov. Together with Stokesosaurus from the Morrison Formation of North America, Aviatyrannis represents the oldest known tyrannosauroid, indicating that tyrannosauroid origins may be found in the Middle–Late Jurassic of Europe/North America. Furthermore, current evidence suggests that early tyrannosaurs were rather small animals, which is in general accordance with their origin amongst the generally rather small coelurosaurs.
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