A pygostyle from a non-avian theropod
R Barsbold, PJ Currie, NP Myhrvold, H Osmólska… - Nature, 2000 - nature.com
R Barsbold, PJ Currie, NP Myhrvold, H Osmólska, K Tsogtbaatar, M Watabe
Nature, 2000•nature.com… Most non-avian theropods have long tails with elongate (relative length to width) caudal
centra, whereas oviraptorosaurs have short tails with short, broad vertebral centra. The
minimum caudal counts are 32 for Conchoraptor (GIN 110/19), 27 for Ingenia and 27 for “Oviraptor”
mongoliensis. GIN 940824 has only 24 caudals, fewer than any non-avian theropod except
Caudipteryx 5 , which has 22. … Pygostyle-like structures could have evolved
independently at least three times in theropods, although the presence of rectrices in two of …
centra, whereas oviraptorosaurs have short tails with short, broad vertebral centra. The
minimum caudal counts are 32 for Conchoraptor (GIN 110/19), 27 for Ingenia and 27 for “Oviraptor”
mongoliensis. GIN 940824 has only 24 caudals, fewer than any non-avian theropod except
Caudipteryx 5 , which has 22. … Pygostyle-like structures could have evolved
independently at least three times in theropods, although the presence of rectrices in two of …
The independent evolution of a bird-like tail has been discovered in an oviraptorosaur.
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