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SINOPTERUS
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Genus: Sinopterus Wang & Zhou, 2003
Etymology: "Chinese wing"
Type species: S. dongi
Other Species: S. gui
Diagnosis: See type species.
Classification: Tapejaridae
Holotype: IVPP V 13363 — A nearly complete articulated skeleton. (Wang & Zhou, 2003)
Referred Specimens: none
Time: Aptian, Early Cretaceous
Horizon: Jiufotang Formation, Jehol Group
Location: Chaoyang, Liaoning Province, China
Skull length: 170 mm
Total length: ~400 mm
Wingspan: ~1200 mm
Mass: ?
Diagnosis: Rostrum slender and pointed, edentulous, edentulous, with a horny beak. Skull long and low. Sagittal crest of premaxilla and dentary low and small. Posterior crest of the premaxilla curved upward, separate from the skull, and parallel to the parietal crest. Nasopreorbital fenestra large and long (length about 2.5 times the height), exceeding one-third the total length of the skull. Radius, wing metacarpal and first phalanx of the wing digit about 1.5, 1.6 and 2 times the length of the humerus, respectively. Carpals large and unfused. Scapula strongly curved. Coracoid expanded at the articulation to the scapula. Tibia about 1.4 times the length of the femur. Metatarsals through progressively shorter. Metatarsal about 22.1% the length of the wing metacarpal, and metatarsal is less than 1/5 the length of metatarsal. (Wang & Zhou, 2003)
Comments:
References:
Wang, X. & Zhou, Z. 2003, A new pterosaur (Pterodactyloidea, Tapejaridae) from the Early Cretaceous Jiufotang Formation of western Liaoning, China and its implications for biostratigraphy. Chinese Science Bulletin, 48:16-23.
Holotype: BPV-077 — Nearly complete specimen with partial skull. (Li, Lü & Zhang, 2003)
Referred Specimens: none
Time: Aptian, Early Cretaceous
Horizon: Jiufotang Formation, Jehol Group
Location: Chaoyang, Liaoning Province, China
Skull length: 85 mm
Total length: ~250 mm
Wingspan: ?
Mass: ?
Diagnosis: A small sized sinopterid [sic] pterosaur. Eleven dorsal vertebrae fused into notarium, and they are nearly equal in length. At least four sacral vertebrae, humerus longer than scapula, wing-metacarpal slightly shorter than the first wing-phalange , the distal end of the delto-pectoral process not expanded , ratio of the femur to the tibia is length approximately 0. 49. (Li, Lü & Zhang, 2003)
Comments:
References:
Li, J., Lü, J. & Zhang, B., 2003, A new Lower Creatceous Sinopterid pterosaur from the Western Liaoning, China. Acta Palaeontologica Sinica, 42 (3) :442 - 447.