Template:Isler et al., 2009

• Isler, M.L., Isler, P.R, Whitney, B.M., Zimmer, K.J. & Whittaker, A. 2009. Species limits in antbirds (Aves: Passeriformes: Thamnophilidae): an evaluation of Frederickena unduligera (Undulated Antshrike) based on vocalizations. Zootaxa, 2305: 61-68. Full article view 
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Nomenclatural acts

• Date of publication: 2009

New names

None