PaleoDB taxon number: 373315

Alternative combination: Falco aeruginosus

Full reference: C. Linnaeus. 1758. Systema Naturae per Regna Tria Naturae, Secundum Classes, Ordines, Genera, Species, cum Characteribus, Differentiis, Synonymis, Locis. Editio Decima 1:1-824

Belongs to Circus according to J. F. Clements et al. 2017

Sister taxa: Circus approximans, Circus assimilis, Circus buffoni, Circus cinereus, Circus cyaneus, Circus dossenus, Circus eylesi, Circus hamiltoni, Circus hudsonius, Circus macrosceles, Circus macrourus, Circus maillardi, Circus maurus, Circus melanoleucos, Circus pygargus, Circus ranivorus, Circus spilonotus, Circus spilothorax, Circus teauteensis