Andrewsornis Patterson, 1941

Alvarenga, Herculano M. F. & Höfling, Elizabeth, 2003, Systematic Revision Of The Phorusrhacidae (Aves: Ralliformes), Papéis Avulsos de Zoologia 43 (4), pp. 55-91 : 78

Genus Andrewsornis Patterson, 1941

Type Species – Andrewsornis abbotti Patterson, 1941 .

Included Species – Only the type species.

Distribution – Middle to Upper Oligocene of Argentina.

Diagnos i s Revised – The largest of the known Patagornithinae . On the skull, the rostral edge of the antorbital fenestra is very inclined. When compared with Patagornis and Andalgalornis , the mandibular symphysis is proportionally smaller and the mandibular fenestra bigger and oval-shaped ( Fig. 26A ).

Figures

FIGURE 26. Skulls of the Patagornithinae (A-C), Mesembriornithinae (D) and Psiloterinae (E-J). A - Andrewsornis abbotti (FM-P13417; from Patterson, 1941), B - Patagornis marshi (BMNH-A-516; from Andrews, 1899), C - Andalgalornis steulleti (FM-P14357); D - Mesembriornis milneedwardsi (MMP-S155); E - Procariama simplex (FM-P14525); F - Psilopterus lemoinei (FM-P13257); G - Psilopterus lemoinei (PUM-15402); H - Psilopterus lemoinei (AMNH-9157); I - Psilopterus lemoinei (PUM-15109); J - Psilopterus bachmanni (PUM-15904). G-J inverted figures from Sinclair & Farr (1910).