Basal Passeriformes

Some articles on passeriformes, basal passeriformes:

Origin and Evolution - Fossil Record - Early European Passerines
... Oligocene of Frauenweiler, Germany) Jamna (Early Oligocene of Jamna Dolna, Poland) Passeriformes gen ... (Early Oligocene of Luberon, France) – suboscine or basal Passeriformes gen ... (Late Oligocene of France) – several suboscine and oscine taxa Passeriformes gen ...