{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,30]],"date-time":"2026-09-30T02:36:37Z","timestamp":1790735797266,"version":"4.1.0"},"reference-count":120,"publisher":"Wiley","issue":"4","license":[{"start":{"date-parts":[[2020,1,15]],"date-time":"2020-01-15T00:00:00Z","timestamp":1579046400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"DOI":"10.13039\/100011068","name":"University of California Museum of Paleontology","doi-asserted-by":"publisher","id":[{"id":"10.13039\/100011068","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["anatomypubs.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["The Anatomical Record"],"published-print":{"date-parts":[[2020,4]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Fossils from the Jehol Group (Early Cretaceous, Liaoning Province, China) are integral to our understanding of Paraves, the clade of dinosaurs grouping dromaeosaurids, troodontids, and avialians, including living birds. However, many taxa are represented by specimens of unclear ontogenetic age. Without a more thorough understanding of ontogeny, evolutionary relationships and significance of character states within paravian dinosaurs may be obscured and our ability to infer their biology restricted. We describe a complete specimen of a new microraptorine dromaeosaur, <jats:italic>Wulong bohaiensis<\/jats:italic> gen. et sp. nov., from the geologically young Jiufotang Formation (Aptian) that helps solve this problem. Phylogenetic analysis recovers the specimen within a monophyletic Microraptorinae. Preserved in articulation on a single slab, the type specimen is small and exhibits osteological markers of immaturity identified in other archosaurs, such as bone texture and lack of fusion. To contextualize this signal, we histologically sampled the tibia, fibula, and humerus and compared them with new samples from the closely related and osteologically mature <jats:italic>Sinornithosaurus<\/jats:italic>. Histology shows both specimens to be young and still growing at death, indicating an age for the new dinosaur of about 1 year. The holotype possesses several feather types, including filamentous feathers, pennaceous primaries, and long rectrices, establishing that their growth preceded skeletal maturity and full adult size in some dromaeosaurids. Comparison of histology in the new taxon and <jats:italic>Sinornithosaurus<\/jats:italic> indicates that macroscopic signs of maturity developed after the first year, but before cessation of growth, demonstrating that nonhistological indicators of adulthood may be misleading when applied to dromaeosaurids. Anat Rec, 303:963\u2013987, 2020. \u00a9 2020 American Association for Anatomy<\/jats:p>","DOI":"10.1002\/ar.24343","type":"journal-article","created":{"date-parts":[[2020,1,15]],"date-time":"2020-01-15T07:42:21Z","timestamp":1579074141000},"page":"963-987","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":36,"title":["A new microraptorine theropod from the Jehol Biota and growth in early dromaeosaurids"],"prefix":"10.1002","volume":"303","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-7955-613X","authenticated-orcid":false,"given":"Ashley W.","family":"Poust","sequence":"first","affiliation":[{"name":"Department of Integrative Biology and Museum of Paleontology University of California  Berkeley California"},{"name":"San Diego Museum of Natural History  San Diego California"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chunling","family":"Gao","sequence":"additional","affiliation":[{"name":"Dalian Natural History Museum  Dalian Liaoning People's Republic of China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"David J.","family":"Varricchio","sequence":"additional","affiliation":[{"name":"Department of Earth Sciences Montana State University  Bozeman Montana"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jianlin","family":"Wu","sequence":"additional","affiliation":[{"name":"First Affiliated Hospital of Dalian Medical University  Dalian Liaoning People's Republic of China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Fengjiao","family":"Zhang","sequence":"additional","affiliation":[{"name":"Dalian Natural History Museum  Dalian Liaoning People's Republic of China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2020,1,15]]},"reference":[{"key":"e_1_2_9_2_1","doi-asserted-by":"publisher","DOI":"10.1073\/pnas.1011369108"},{"issue":"2","key":"e_1_2_9_3_1","first-page":"189","article-title":"The skull of Velociraptor (Theropoda) from the late Cretaceous of Mongolia","volume":"44","author":"Barsbold R.","year":"1999","journal-title":"Acta Palaeontol Pol"},{"key":"e_1_2_9_4_1","doi-asserted-by":"publisher","DOI":"10.1038\/nature11146"},{"key":"e_1_2_9_5_1","doi-asserted-by":"publisher","DOI":"10.1080\/02724634.1996.10011283"},{"key":"e_1_2_9_6_1","first-page":"1","article-title":"Remarkable new birdlike dinosaur (Theropoda: Maniraptora) from the Upper Cretaceous of Montana","volume":"13","author":"Burnham D. 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