[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Subject Index][Author Index]
New pterosaur material from China for Zhenyuanopterus and Feilongus (free pdfs)
From: Ben Creisler
Two new papers. The pdfs are free at the Chinese links:
Teng Fangfang, Lü Junchang, Wei Xuefang, Hsiao Yufu & Michael Pittman (2014)
New Material of Zhenyuanopterus (Pterosauria) from the Early
Cretaceous Yixian Formation of Western Liaoning.
Acta Geologica Sinica (English Edition)88(1): 1-5
A new partial specimen of Zhenyuanopterus from the Lower Cretaceous
Yixian Formation of Beipiao city, Liaoning Province is described. This
specimen is slightly larger than half the size of the holotype.
Although it is not complete, it provides new information on
Zhenyuanopterus both in taxonomy and ontogeny: the total number of the
caudal vertebrae is 15; the forelimb is more robust than the hindlimb;
the growth rate of the humerus and femur is constant, and their ratio
is about 1. Compared with the holotype, the scapula and coracoid grow
faster than the humerus and the femur. The scapula and coracoid may
slow their growth rate after a certain ontogenetic stage. The pectoral
girdle, robust forelimb and weak hindlimb of the new material
(XHPM1088) together with data from the holotype of Zhenyuanopterus
indicate that this taxon spent less time on land than in the sky or
other ecological niches such as forests and cliffs.
Wang Xuri, Shen Caizhi, Gao Chunling & Kemo Jin (2014)
New Material of Feilongus (Reptilia: Pterosauria) from the Lower
Cretaceous Jiufotang Formation of Western Liaoning.
Acta Geologica Sinica (English Edition) 88(1): 13-17
Based on a new nearly naturally preserved skull and four cervical
vertebrae of the pterosaur Feilongus sp. from the lower Cretaceous
Jiufotang Formation of Beipiao, western Liaoning province,
northeastern China, the diagnosis of Feilongus is amended. The revised
diagnosis notes long, curved, needle-shaped teeth that are confined to
the jaw far anterior to the nasoantorbital fenestra; posterior teeth
that are slightly smaller than the anterior teeth; cervical vertebrae
elongated with a ratio of length to width greater than 5; tooth number
of about 78; and two cranial sagittal crests.