Figure 9 in On the osteology and phylogenetic affinities of the Pseudasturidae - Lower Eocene stem-group representatives of parrots (Aves, Psittaciformes)

Figure 9. Distal end of left tarsometatarsus of psittaciform birds in comparison (plantar view). (A) cf. Pseudastur macrocephalus (Pseudasturidae, BMNH A 6184; Eocene) (B) Quercypsitta sudrei (Quercypsittidae; Upper Eocene), after Mourer- Chauviré (1992); (C) cf. Psittacopes (unnamed higher-level taxon; Lower Eocene), after Mayr & Daniels (1998: pl. 5, Fig. 16a); (D) Myiopsitta monachus (Psittacidae; recent). The arrows indicate the furrow for the tendon of musculus flexor perforatus digiti IV. Scale bars equal 5 mm.