TY - JOUR
AU - Wang, Xiao-lin
AB - Therizinosauroidea (‘segnosaurs’) are little-known group of Asian dinosaurs with an unusual combination of features that, until recently, obscured their evolutionary relationships. Suggested affinities include Ornithischia
1
, Sauropodomorpha
2
,
3
, Theropoda
4,5,6,7,8,9,10,11
 and Saurischia sedis mutabilis

12
. Here we describe a new therizinosauroid from the Yixian Formation (Early Cretaceous, Liaoning, China)
13
. This new taxon provides fresh evidence that therizinosauroids are nested within the coelurosaurian theropods
8,9,10,11
. Our analysis suggests that several specialized therizinosauroid characters, such as the Sauropodomorpha-like tetradactyl pes
1
,
2
, evolved independently within this group. Most interestingly, this new dinosaur has integumentary filaments as in Sinosauropteryx

14
,
15
. This indicates that such feather-like structures may have a broad distribution among non-avian theropods, and supports the hypothesis that the filamentous integumentary structures may be homologous to the feathers of birds
14
,
15
.
TI - A therizinosauroid dinosaur with integumentary structures from China
JF - Nature
DO - 10.1038/20670
DA - 1999-05-27
UR - https://www.deepdyve.com/lp/springer-journals/a-therizinosauroid-dinosaur-with-integumentary-structures-from-china-KhBLpQ0kkb
SP - 350
EP - 354
VL - 399
IS - 6734
DP - DeepDyve
ER -