Pygostylia

Pygostylia is a group of avialans which includes the Confuciusornithidae and all of the groups more closely related to modern birds.

Vorona berivotrensis ( ; Malagasy for "bird", berivotrensis, "from Berivotra") is a monotypic genus of prehistoric birds. It was described from fossils found in a Maevarano Formation quarry near the village of Berivotra, Mahajanga Province, Madagascar. The age of the fossilised specimen is Late Cretaceous, probably Maastrichtian (72.1-66.0 mya). V. berivotrensis is known from scattered remains, possibly from a single individual (UA 8651 and FMNH PA715).

Xinghaiornis is an extinct genus of toothless basal ornithothoracine dinosaur known from the Early Cretaceous Yixian Formation (Aptian stage) of western Liaoning Province, northeastern China. Xinghaiornis was first named by Xuri Wang, Luis M. Chiappe, Fangfang Teng and Qiang Ji in 2013 and the type species is Xinghaiornis lini. Xinghaiornis was prepared by Maureen Walsh at the Dalian Museum of Prehistory, Dalian, China.