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Jian

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Life reconstruction of Jian changmaensis

Life reconstruction of Jian changmaensis

Jian
Holotype of Jian changmaensis (GSGM-D050), an articulated partial left pectoral girdle (scapulocoracoid) and forelimb (humerus, radius, and ulna). A, silhouette of generalized microraptorine dromaeosaurid theropod (courtesy Scott Hartman) showing skeletal elements preserved; B, photograph of specimen as preserved, exposed primarily in dorsomedial (scapulocoracoid), caudodorsal (humerus), and dorsal (radius and ulna) views; C, interpretive line drawing of B; D, detail photograph of scapulocoracoid and proximal end of humerus in caudodorsal view, showing supracoracoid fenestra and other structures; E, interpretive line drawing of D. Abbreviations: ac, acromion; bc, bicipital crest; C, coracoid; cr, caudal ridge; dep, dorsal epicondyle; dpc, deltopectoral crest; dr, dorsal ridge; ed, epicondylar depression; fs?, fossa for M. supinator?; H, humerus; hh, humeral head; lp, lateral process; ‘mb’, ‘medial bar’; op, olecranon process; R, radius; S, scapula; scb, scapular blade; scf, supracoracoid fenestra; sta, sternal articulation; U, ulna.

Holotype of Jian changmaensis (GSGM-D050), an articulated partial left pectoral girdle (scapulocoracoid) and forelimb (humerus, radius, and ulna). A, silhouette of generalized microraptorine dromaeosaurid theropod (courtesy Scott Hartman) showing skeletal elements preserved; B, photograph of specimen as preserved, exposed primarily in dorsomedial (scapulocoracoid), caudodorsal (humerus), and dorsal (radius and ulna) views; C, interpretive line drawing of B; D, detail photograph of scapulocoracoid and proximal end of humerus in caudodorsal view, showing supracoracoid fenestra and other structures; E, interpretive line drawing of D. Abbreviations: ac, acromion; bc, bicipital crest; C, coracoid; cr, caudal ridge; dep, dorsal epicondyle; dpc, deltopectoral crest; dr, dorsal ridge; ed, epicondylar depression; fs?, fossa for M. supinator?; H, humerus; hh, humeral head; lp, lateral process; ‘mb’, ‘medial bar’; op, olecranon process; R, radius; S, scapula; scb, scapular blade; scf, supracoracoid fenestra; sta, sternal articulation; U, ulna.

crest humerus drawing holotype +4
Jian Xianfo

Jian Xianfo

Jian
Jian Ghomeshi and I

Jian Ghomeshi and I

Canada Jian
Jian changmaensis (left) attacks the early bird Gansus yumenensis (right) in what is now the Changma Basin of northwestern China approximately 120 million years ago

Jian changmaensis (left) attacks the early bird Gansus yumenensis (right) in what is now the Changma Basin of northwestern China approximately 120 million years ago

pelvis China Jian bird
Jian
Taxa Jian
Jian

News

This four-winged dinosaur may have terrorized Earth's earliest birds
bone feather predator China Dinosauria Jian Velociraptor bird
A newly discovered feathered dinosaur called Jian changmaensis may be the missing predator responsible for mysterious piles of crushed prehistoric bird bones in China. The four-winged glider, a close cousin of Velociraptor, helps reveal how early birds and their dinosaur relatives shared the same ancient landscape.
23/06/2026 sciencedaily
New Four-winged Dinosaur from China Described
feather limb description China Cretaceous Early Cretaceous fossil Dinosauria Jian Microraptorinae new species partial
Palaeontologists have described a new species of microraptorine theropod from north-western China. Named Jian changmaensis, this small, feathered dinosaur probably glided on four wings. The fossil provides fresh insights into Early Cretaceous ecosystems and extends the known range of the Microraptorinae. The fossil material consists of an articulated partial left pectoral girdle and forelimb. It
08/06/2026 everythingdinosaur
Un vrai cauchemar volant : des chercheurs ont découvert un « dragon » préhistorique avec 4 ailes qui terrorisait les premiers oiseaux !
A true flying nightmare: researchers have discovered a prehistoric “dragon” with 4 wings that terrorized early birds!
feather hunting China Cretaceous fossil Dinosauria Jian bird study
Raptors, feathered dinosaurs from the Cretaceous period, could not fly despite their close relationship with birds. However, a new study carried out at a fossil site in China reveals that some of them would have been capable of gliding and hunting the first birds.
05/06/2026 futura-terre ⚙ Auto-translated
New Microraptorine Dinosaur Discovered in China
New Microraptorine Dinosaur Discovered in China
China Cretaceous Early Cretaceous specimen Dinosauria Jian Microraptorinae bird
Jian changmaensis is the first non-avian dinosaur found at a paleontological site that has yielded more than 100 specimens of Early Cretaceous birds. The post New Microraptorine Dinosaur Discovered in China appeared first on Sci.News: Breaking Science News.
04/06/2026 sci-news