Cladistic matrix targeted at resolving relationships between fossil birds from the Changma locality of the Lower Cretaceous Xiagou Formation

Jingmai O'Connor, Thomas Stidham, Jerald Harris, Matthew Lamanna, Alida Bailleul, Han Hu, Min Wang & Hailu You
We describe six specimens consisting of cranial remains and associated partial presacral axial series belonging to ornithuromorph birds from the Changma locality of the Lower Cretaceous Xiagou Formation of northwestern Gansu Province, China. Comparison among specimens is limited by the paucity of overlapping elements, their differing exposed views, and, in some specimens, poor preservation. Despite this, three separate taxa are represented, evidenced by differences in their dentary dentitions: one specimen is edentulous, another has sharp,...
1 citation reported since publication in 2021.
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