Genus: Microraptor XU, ZHOU & WANG, 2000
Etymology: Greek, mikros, "small" and Latin, raptor, “robber”, small robber; the generic name refers to the small size of this new dromaeosaurid dinosaur.
= Archaeoraptor SLOAN, 1999 (nomen nudum)
= Archaeoraptor OLSON, 2000
Etymology: Greek, archae, "ancient" and Latin, raptor, “robber”, Ancient robber.

Species: zhaoianus XU, ZHOU & WANG, 2000
Etymology: In honor of Zhao Zijin, a distinguished dinosaurologist who introduced the first author to the field of vertebrate paleontology.
= Archaeoraptor zhaoianus SLOAN, 1999 (nomen nudum)
= Archaeoraptor zhaoianus OLSON, 2000

Holotype: IVPP V 12330

Locality: Xiasanjiazi, Chaoyang County, western Liaoning Province, China.

Horizon: Horizon IV, Jiufotang Formation, Upper Jehol Group.

Biostratigraphy: Psittacosaurus fauna, Cathayornis-Chaoyanga Avifauna.

Age: Barremian Stage, Lower Gallic Subepoch, Lower Early Cretaceous Epoch, Early Cretaceous.

Material: Fragmentary skull and skeleton with ‘feather’ impressions.

Note: Has an articulated foot of a mammal in its ribs LARSSON, HONE, DECECCHI, SULLIVAN & XU, 2010

Referred material:

AZUMA, 2005, JI, JI, LU, YOU & YUAN, 2006

Locality: Baitaigou village, northwest of the Yizhou town, Yixian County, Liaoning Province, China.

Horizon: Yixian Formation, Jehol Group.

Biostratigraphy: Psittacosaurus Fauna, Confuciusornis Avifauna.

Age: Valanginian Stage, Upper Neocomian Subepoch, Early Early Cretaceous Epoch, Early Cretaceous.

Material:

JI-5: Skull and skeleton with feather impressions.

 

HWANG, NORELL, QIANG & KEQIN, 2002

Locality: Qianyang, a small village approximately 10 km southwest of the city of Yixian, Liaoning Province, China.

Horizon:

Biostratigraphy:

Age: Early Cretaceous.

Material:

CAGS 20-8-001: 7 slabs, dorsal surfaces of the pectoral girdle, forelimbs, trunk, pelvic girdle, proximal femora, and proximal caudals are exposed, on the ventral surface the distal femora, tibiae, fibulae , pes, and distal caudals are exposed. The counterslab is available only for the midsection of the body.

Note: Has furcula.

CAGS 20-7-004: A single slab on a plaster block with a few counterpart pieces preserved. The specimen is semi-articulated: however, some elements like the lower jaws, lay near the edge of the slab.

Note: Has furcula.

 

= Microraptor sp LI, GAO, MENG, CLARKE, SHAWKEY, D'ALBA, PEI, ELLISON, NORELL, & VINTHER, 2012

Locality: Lamadong, Jianchang County, Western Liaoning Province, China.

Horizon: Jiufotang Formation.

Biostratigraphy:

Age: Early Cretaceous.

Material:

BMNHC PH881: Skull and nearly complete.

Microraptor zhaoianus (after PEI, LI, MENG, GAO, & NORELL, 2014) BMNHC PH881.

Note: With feathers on wings, hind legs, and tail. The feathers show Iridescent coloring.

 

O'CONNOR, ZHENG, DONG, WANG, WANG, ZHANG & ZHOU, 2019

Locality: Jianchang, Jianchang County, Liaoning Province, northeastern China.

Horizon: Jiufotang Formation.

Biostratigraphy:

Age: Early Cretaceous.

Material:

STM5-32: Skull and nearly complete skeleton.

Note: Indrasaurus wangi, a lizard partial aticulated skeleton preserved in the stomach region.


= Sinornithosaurus zhaoi ZHANG, 2007 (nomen nudum)
Etymology: In honor of Mr. Zijin Zhao.

Holotype:

Locality: Beipiao, Liaoning Province, China.

Horizon:

Biostratigraphy:

Age: Late Jurassic.

Material: Skull and skeleton.

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Species: gui XU, ZHOU, WANG, KUANG, ZHANG & DU, 2003
Etymology: In honor of Gu Zhiwei, a distinguished paleontologist who contributed greatly to the study of jehol biota.

Holotype: IVPP V13352

Locality: Dapingfang, 30 km southwest of Chaoyang City, Chaoyang County, Western Liaoning Province, China.

Horizon: Horizon IV, Jiufotang Formation, Upper Jehol Group.

Biostratigraphy: Psittacosaurus fauna, Cathayornis-Chaoyanga Avifauna.

Age: Barremian Stage, Lower Gallic Subepoch, Lower Early Cretaceous Epoch, Early Cretaceous.

Material: Skull missing snout, fragmentary skeleton with feather impressions on wings, legs, tail and body.
Note: 4-winged dromaeosaur.

Referred material:

IVPP V13320, V13351, TNP00996: Nearl y complete specimen with feather impressons.

 

Locality: Shangheshou, 3 km northwest of Chaoyang City, Liaoning Province, China.

Horizon: Horizon IV, Jiufotang Formation, Upper Jehol Group.

Biostratigraphy: Psittacosaurus fauna, Cathayornis-Chaoyanga Avifauna.

Age: Barremian Stage, Lower Gallic Subepoch, Lower Early Cretaceous Epoch, Early Cretaceous.

Material:

IVPP V13476, IVPP V 13477: Fragmentary specimens with feather impressions.

 

AZUMA, 2005, JI, JI, LU, YOU & YUAN, 2006

Locality: Baitaigou village, northwest of the Yizhou town, Yixian County, Liaoning Province, China.

Horizon: Yixian Formation, Jehol Group.

Biostratigraphy: Psittacosaurus Fauna, Confuciusornis Avifauna.

Age: Valanginian Stage, Upper Neocomian Subepoch, Early Early Cretaceous Epoch, Early Cretaceous.

Material:

IG-1: Skull and skeleton.

 

O'CONNOR, ZHOU & XU, 2011

Locality: China.

Horizon: Jehol Biota.

Biostratigraphy:

Age: Early Cretaceous.

Material:

IVPP V 17972: Skull and skeleton.

Note: With a partial skeleton of an adult Enantiornithine bird in its stomach.

Note: With feather impressions, and skin impressions (McNAMARA, ZHANG, KEARNS, ORR, TOULOUSE, FOLEY, HONE, ROGERS, BENTON, JOHNSON, XU & ZHOU, 2018).

 

XING, PERSONS IV, BELL, XU, ZHANG, MIYASHITA, WANG & CURRIE, 2013

Locality: Northeastern China.

Horizon: Jiufotang Formation, Upper Jehol Group.

Biostratigraphy:

Age: Barremian Stage, Lower Gallic Subepoch, Lower Early Cretaceous Epoch, Early Cretaceous.

Material:

QMV1002: Nearly complete specimen, skull, and skeleton, with feather impressions.

Note: With a pair of fish vertebral centra and thing bones with rugose surface textures and evidence of gastric etiching, possibly fish cranial elements.

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Species: hanqingi GONG, MARTIN, BURNHAM, FALK, & HOU, 2012
Etymology: In honor of the late Marshall Zhang Xueliang who was the founder, president, and later Honorary President of Northeastern University, China: Hanqing is his alternate name.

Holotype: LVH 0026

Locality: Liaoning Province, Northeastern China.

Horizon: Jiufotang Formation, Upper Jehol Group.

Biostratigraphy:

Age: Barremian Stage, Lower Gallic Subepoch, Lower Early Cretaceous Epoch, Early Cretaceous.

Material: Skull and skeleton of a nearly complete specimen.

Note: With feather impressions.