Genus: Huaxiapterus LU & YUAN, 2005
Etymology: Huaxia, the Chinese phonetic alphabet, the old name of China, and
Greek, -pterus, "wing"; the suffix of pterosaur: the generic name implies that the
new pterosaur is from China.
Species: jii LU & YUAN, 2005
Etymology: In honor of Prof. Ji Qiang, who studied the first pterosaur specimen
from the Jehol Biota (Ji and Ji, 1997).
= Sinopterus jii (LÜ & YUAN, 2005) WANG & ZHAO, 2006
Holotype: GMN-03-11-001
Locality: Chaoyang, 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.
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Species: corollatus LU, JIN, UNWIN, ZHAO, AZUMA & JI, 2006
Etymology: Latin, corollatus, "coronal"; pertaining to the shape of the cranial
crest.
= Sinopterus corollatus (LÜ, JIN, UNWIN,
ZHAO, AZUMA & JI,
2006) KELLNER, 2010
Holotype: ZMNH M8131
Locality: Unknown, Chaoyang City, Liaoning Province, China.
Horizon: 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.
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Species: benxiensis LU, GAO, XING, LI & JI, 2007
Etymology: In reference to the Benxi Geological Museum, Liaoning Province, China, at which the holotype
is housed.
Holotype: BXGM V0011
Locality: Lianhe Town, Chaoyang City, Liaoning Province, China.
Horizon: 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 and skeleton.
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Species: atavismus LÜ,
TENG, SUN, SHEN, LI, GAO, & LIU, 2016
Etymology: French, atavismus, "evolutionary throwback" from Latin, atavus, "great-grandfathers’ grandfather."
Holotype: XHPM 1009
Locality: Chaoyang, Chaoyang County, western Liaoning Province, China.
Horizon: Jiufotang Formation.
Biostratigraphy:
Age:
Material: Fragmentary skull and
Referred material:
= Sinopterus atavismus ZHANG, JIANG, CHENG & WANG, 2019
Locality: Sihedang, Lingyuan, Liaoning Province, China.
Horizon: Jiufotang Formation.
Biostratigraphy:
Age: Aptian Stage, Lower Gallic Subepoch, Early Cretaceous Epoch, Early Late Cretaceous.
Material:
IVPP V 23388: A nearly complete skull and skeleton.