[N] 2011 New ctenochasmatid pterosaur from Liaoning
Jiang, S. & Wang, X. (2011) A new ctenochasmatid pterosaur from the Lower Cretaceous, western Liaoning, China. An. Acad. Bras. Ciênc. [online]. vol.83, n.4, pp. 1243-1249. ISSN 0001-3765. http://dx.doi.org/10.1590/S0001-37652011000400011.
Abstract
A nearly complete skull of a new ctenochasmatid pterosaur, Pterofiltus qiui gen. et sp. nov., from the Lower Cretaceous deposits of Liaoning, China, is described here. The specimen (IVPP V12339), was collected from the shale of the lower Yixian Formation (125 Ma) at the Zhangjiagou locality. It has the following combination of characters: about 112 teeth in total (including the upper and lower jaws); the dentition occupies more than 50% of the skull length; the anterior teeth vary in size; the mandibular symphysis is longer than half of the whole mandible length; in ventral view, an apparent symphyseal trough in the median part of the symphysis.
Etymology
ptero-, from pteron (Greek), means wing; filtrus, from filtrum (Medieval Latin), means filter. | In honor of Prof. Qiu Zhanxiang, who has made great contributions to the Chinese paleontology
Type specimen
IVPP V12339 (Fig. 2), most part of skull and mandible, and first two cervical vertebrae, housed in the Institute of Vertebrate Paleontology and Paleoanthropology (IVPP), Chinese Academy of Sciences, Beijing, China.
Locality and horizon
Zhangjiagou, Beipiao City, Liaoning Province, China. Jianshangou Bed, lower Yixian Formation, Lower Cretaceous, about 125 Ma (Swisher et al. 2001).
Diagnosis
A Ctenochasmatid pterosaur with the following combination of characters that distinguish it from the other members of this clade (autapomorphies are marked with an asterisk): about 112 teeth in total (including the upper and lower jaws); the dentition occupies more than 50% of the skull length; the anterior teeth vary in size; the mandibular symphysis is longer than half of the whole mandible length*; in ventral view, an apparent symphyseal trough in the median part of the symphysis
Abstract
A nearly complete skull of a new ctenochasmatid pterosaur, Pterofiltus qiui gen. et sp. nov., from the Lower Cretaceous deposits of Liaoning, China, is described here. The specimen (IVPP V12339), was collected from the shale of the lower Yixian Formation (125 Ma) at the Zhangjiagou locality. It has the following combination of characters: about 112 teeth in total (including the upper and lower jaws); the dentition occupies more than 50% of the skull length; the anterior teeth vary in size; the mandibular symphysis is longer than half of the whole mandible length; in ventral view, an apparent symphyseal trough in the median part of the symphysis.
Etymology
ptero-, from pteron (Greek), means wing; filtrus, from filtrum (Medieval Latin), means filter. | In honor of Prof. Qiu Zhanxiang, who has made great contributions to the Chinese paleontology
Type specimen
IVPP V12339 (Fig. 2), most part of skull and mandible, and first two cervical vertebrae, housed in the Institute of Vertebrate Paleontology and Paleoanthropology (IVPP), Chinese Academy of Sciences, Beijing, China.
Locality and horizon
Zhangjiagou, Beipiao City, Liaoning Province, China. Jianshangou Bed, lower Yixian Formation, Lower Cretaceous, about 125 Ma (Swisher et al. 2001).
Diagnosis
A Ctenochasmatid pterosaur with the following combination of characters that distinguish it from the other members of this clade (autapomorphies are marked with an asterisk): about 112 teeth in total (including the upper and lower jaws); the dentition occupies more than 50% of the skull length; the anterior teeth vary in size; the mandibular symphysis is longer than half of the whole mandible length*; in ventral view, an apparent symphyseal trough in the median part of the symphysis