Confuciusornis sanctus, a new Late Jurassic sauriurine bird from China

In this note we report a new sauriurine bird from the Late Jurassic of Liaoning,China: Confuciusornis sanctus. This bird can be morphologically distinguished from the twoinfraclasses in Sauriurae by significant features, such as the presence of horny bill, a pneu-matic foramen at the proximal end of the humerus and extraordinary long ungual phalangeof the first manual digit. It is referred to a new order: Confuciusornithiformes ord. nov..under the subclass of Sauriurae.