Key words: Cretaceous, Argentina, Patagonia, coracoid, Neornithes, Cimolopterygidae.
RESUMEN: En el presente articulo, se describe el nuevo genero y especie de ave Neornithes Lamarqueavis australis.
Palabras clave: Cretacico, Argentina, Patagonia, coracoides, Neornithes, Cimolopterygidae.
2007), stem ornithurines (CLARKE & CHIAPPE, 2001; AGNOLIN & MARTINELLI, 2009), and Neornithes or neornithine-like birds (OLsoN, 1992; CHIAPPE, 1996; HOPE, 2002; AGNOLIN & MARTINELLI, 2009).
Before the end of the Cretaceous, Neornithes become abundant, and were the only group (or nearly so) that survived in the Tertiary with little changes (HOPE, 2002; see MAYR, 2005).
The aim of the present paper is to report isolated bones belonging to the clade of Neornithes or "modern birds" collected in northwestern Patagonia, Argentina.
In fact this genus could be included within Neornithes on the basis of the following apomorphic feature: humeral articular surface not extended sternally beyond the omal margin of the scapular cotyla (see figure 3).