Figure 41. Character 85 in Morphology-based phylogenetic analysis and classification of the family Rhinocryptidae (Aves: Passeriformes)

Figure 41. Character 85 and its postulated states. Syrinx and lower trachea, dorsoventral intrinsic muscle: A, absent – 85.0; B, present – 85.1. Stippled areas are cartilaginous tissue, non-stippled areas are calcified structures. A1/B1 elements are indicated. Syringes of (A) Myornis senilis (QCAZ 3724) and (B) Pteroptochos castaneus (AMNH 11694) in lateral view. Scale bars 2 mm.