New Ctenochasmatid Pterosaur found from the lower cretaceous of China

Dec 16, 2011
Fig. 1: Pterofiltrus qiui gen. et sp. nov., IVPP V12339; photograph (A); line drawing (B) showing the general position of the elements; their relationship (C), blue, rostrum; green, mandible; red, posterior part of the skull; white, indeterminate. Credit: JIANG Shunxing

Drs. JIANG Shunxing and WANG Xiaolin from Institute of Vertebrate Paleontology and Paleoanthropology (IVPP), Chinese Academy of Sciences, described a new ctenochasmatid pterosaur, Pterofiltus qiui gen. et sp. nov., from the Lower Cretaceous deposits of Liaoning, China, as reported in Annals of the Brazilian Academy of Sciences (2011) 83(4): 1243-1249, providing further information on the global distribution of the ctenochasmatid, in Asia, Europe and America.

The new specimen (IVPP V12339) was collected from the shale of the lower Yixian Formation (about 125 Million years ago) at the Zhangjiagou locality, consisting of most part of skull and mandibles, and first two cervical vertebrae, which is housed in the Institute of and , , Beijing, China. In the same locality, there are many other vertebrate fossils such as Dendrorhynchoides curvidentatus, Protarchaeopteryx robusta, Caudipteryx dongi , Caudipteryx zoui, and an immature iguanodontian unearthed.

Five genera and species of ctenochasmatids has been reported before in : Huanhepterus quingyangensis, Beipiaopterus chenianus, Cathayopterus grabaui, Gegepterus changae and Elanodactylus prolatus. Beipiaopterus and Elanodactylus are known only postcranial skeletons, whereas Huanhepterus, Cathayopterus and Gegepterus have partial or nearly complete skulls.

Pterofiltrus qiui differs from other ctenochasmatid by 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.

“Pterofiltrus qiui is assigned to the Ctenochasmatidae based on the extremely elongated rostrum, a large number of slender teeth, and the upper anterior teeth inclined ventroanteriorly”, said WANG Xiaolin, coauthor and research designer, “The Jehol Biota comprises many pterosaurs and ctenochasmatids play a very important role. The amount of clade members is not big, but this clade has more taxa than many others. This new member provides further information on the global distribution of the ctenochasmatid, in Asia, Europe and America”.

Explore further: Fallen Egypt archaeologist wants international Grand Museum

Related Stories

New Eosauropterygian found in Eastern Yunnan, China

Jun 01, 2011

The marine Triassic deposits in southwestern China have yielded numerous vertebrate fossils (ichthyosaurians, sauropterygians, thalattosaurians, and fishes). A new eosauropterygian, Diandongosaurus acutidentatus ...

New captorhinid reptile found in China

May 23, 2011

A new captorhinid reptile, Gansurhinus qingtoushanensis, gen. et sp. nov., was found from Xidagou Formation (Middle Permian) at Qingtoushan (Dashankou) locality near Yumen, Gansu Province, and from Naobao ...

Early cretaceous birds with crops found in China

Sep 06, 2011

The crop is characteristic of seed-eating birds today, yet little is known about its early history despite remarkable discoveries of many Mesozoic seed-eating birds in the past decade. Scientists from Institute ...

Recommended for you

New Sesotho-named dinosaur from South Africa

Jun 24, 2015

South African and Argentinian palaeontologists have discovered a new 200 million year old dinosaur from South Africa, and named it Sefapanosaurus, from the Sesotho word "sefapano".

User comments : 0

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.