A Radiation of Coly-like Birds from the Eocene of North America (aves: Sandcoleiformes New Order)
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چکیده
A new order and family (Sandcolei formes: Sandcoleidae) is erected for the Middle Eocene genera Eobucco Feduccia and Martin 1976, Uintornis Marsh 1872, and Botauroides Shufeldt 1915 of Wyoming and three new genera, Sandcoleus, Anneavis, and Chascacocolius from the Lower Eocene of Wyoming. Sandcoleiforms were coly-like (Coliidae) in appearance, but they exhibited very different bill specializations. They were not closely related to any extant orders; nevertheless, they were probably closer to colies than to any other birds currently known.
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