. Bonner zoologische Beiträge : Herausgeber: Zoologisches Forschungsinstitut und Museum Alexander Koenig, Bonn. Biology; Zoology. Heft 1—3 26,1975 Syringeal morphology in Muscicapidae 117 birds, the generalized pattern may logically be assumed to represent the primitive condition. One phylogenetic route (Fig. 2 a) assumes the acquisition of the turdine pattern (solid line) in a stock that produced both the Turdinae and the Muscicapinae, followed by a return to the primitive condition (dashed line) in at least three lines of thrushes (leading, respectively, to Zeledonia, to Modulatiix, and to t
. Bonner zoologische Beiträge : Herausgeber: Zoologisches Forschungsinstitut und Museum Alexander Koenig, Bonn. Biology; Zoology. Heft 1—3 26,1975 Syringeal morphology in Muscicapidae 117 birds, the generalized pattern may logically be assumed to represent the primitive condition. One phylogenetic route (Fig. 2 a) assumes the acquisition of the turdine pattern (solid line) in a stock that produced both the Turdinae and the Muscicapinae, followed by a return to the primitive condition (dashed line) in at least three lines of thrushes (leading, respectively, to Zeledonia, to Modulatiix, and to the Myadestes-Phaeornis-Stizorhina-Neocossyphus group) and at least two lines of flycatchers (to Newtonia and to Microeca). To attain even this degree of monophyly, one must consider the Turdinae Turdinae Muscicapinae i v. Generalized Ancest ral Syrinx Fig. 2 a Fig. 2. Dendrograms of possible phylogenies of the generalized and turdine syringeal types, within the framework of the prevailing taxonomic groupings. Dashed lines: generalized syrinx type. Solid lines: turdine syrinx type, a, Assuming that the turdine condition was acquired only once and then lost in lines leading to Turdinae and Muscicapinae with generalized syringes, b, Assuming that members of the Turdinae and Muscicapinae with generalized syringes have retained this type from the primitive condition, c, Assuming that the turdine condition was acquired only once in the evolution of the Turdinae and Muscicapinae and never subsequently Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Zoologisches Forschungsinstitut und Museum Alexander Koenig. Bonn : Das Forschungsinstitut
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