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Kayentavenator
''Kayentavenator'' (meaning "Kayenta hunter") is a small carnivorous dinosaur genus which lived during the Early Jurassic Period; fossils were recovered from the Kayenta Formation of northeastern Arizona and were described in 2010.〔Gay, Robert. 2010. "''Kayentavenator elysiae''", a new tetanuran from the early Jurassic of Arizona" In: Notes on Early Mesozoic Theropods. Lulu Press. p. 27-43. ISBN 978-0-557-46616-0〕
==Description==
The holotype specimen of ''K. elysiae'' is a juvenile, as shown by unfused neural spines〔 and would have stood about high at the hip. The adult size of ''Kayentavenator'' is unknown. The inclusion of a pubic fenestra is one of the characteristics that Gay uses to set ''Kayentavenator'' apart from the contemporaneous, and better known ''Dilophosaurus''.〔 As ''Dilophosaurus'' lacks a pubic fenestra as a subadult or an adult,〔Welles, S. P. (1984). "Dilophosaurus wetherilli (Dinosauria, Theropoda), osteology and comparisons". Palaeontogr. Abt. A 185: 85–180.〕 it is unlikely that it had one during any stage of ontogeny. Apomorphies include an ellipsoid acetabulum, the greater trochanter and the head of the femur having been fused, a mediodistal crest that extends 50% of
the length of the femur, as well as a prominent accessory condyle on the medial femoral condyle, a groove in dorsal surface of the femoral head that extends out from the centerline of the body, and highly constricted ("waisted") caudal vertebra centra.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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