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HAOPTERUS
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Genus: Haopterus Wang & Lü, 2001
Etymology: "Prof. Yichun Hao's wing"
Type species: H. gracilis
Other Species: none
Diagnosis: See type species.
Classification: Ornithocheiroidea
Holotype: IVPP V11726 — A nearly complete skeleton that contains a complete skull and pectoral girdle, forelimbs, sternum, cervical, dorsal, metatarsals and digits. (Wang & Lü, 2001)
Referred Specimens: none
Time: Valanginian-Barremian, Early Cretaceous
Horizon: Jianshangou Bed, Lower Yixian Formation
Location: Sihetun, Shangyuan, Beipiao, western Liaoning, China
Skull length: 145 mm
Total length: 400 mm
Wingspan: 1.35 m
Mass: ?
Diagnosis: Small to medium-sized pterosaur. Maximum wingspan 1.35 m. Skull length 145 mm. Skull low and long; rostrum pointed; crest absent at the rear of the skull; nasopreorbital opening elongate and elliptical. 12 pointed and posteriorly inclined teeth in both upper and lower jaws. Teeth of the premaxilla (first 3 teeth of the upper jaw) slender. Fourth and more posterior teeth constricted at the base. Teeth extend posteriorly toward the middle of the nasopreorbital opening, about 66.4% of the lower jaw equipped with teeth. Forelimb robust. Humerus short, robust and straight, delto-pectoral crest expanded and semicircular. Wing metacarpal long and about 1.3 times that of the humerus. Phalanges I-III of the wing digit longer than wing metacarpal. Ulna and phalanx I of wing digit 1.1 and 1.4 times that of the wing metacarpal, respectively. Metatarsals reduced; Metatarsals I-III of nearly equal length; metatarsals IV and V reduced and short; Length of metatarsal I about 18.7% that of wing metacarpal. Sternum fan-shaped; its length equals its width; keel well-developed. (Wang & Lü, 2001)
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