Phorusrhacidae placed Psilopterus within the subfamily Psilopterinae, along with the genera Procariama and Paleopsilopterus, and divided Psilopterus into four species...

from Uruguay of new findings of phorusrachids such as a specimen of Psilopterus dating to 96,040 ± 6,300 years ago would imply that phorusrhacids survived...

scaled up versions of those of smaller, more complete relatives like Psilopterus and Patagornis, as exemplified by a frequently reproduced 1895 sketch...

larger than Psilopterus, Paleopsilopterus, and other members of the subfamily Psilopterinae. Procariama is quite similar to Psilopterus, but differs...

with Patagornis marshi. P. lemoinei and P. bachmanni are now species of Psilopterus. Moreno's rival, Ameghino, also unknowingly found or described many fossils...

about 39% of the width, which is less than in Phorusrhacos with 47% or Psilopterus with 48%. In this regard, the skull of Devincenzia more closely resembled...

 Psilopterus affinis  Psilopterus bachmanni...

general shape, with the atlas being both taller and narrower than that of Psilopterus. Following the cervical series are five thoracic dorsal vertebrae followed...

Psilopterus affinis Psilopterus bachmanni...

"Hermosiornis" was the ancestor of the modern Cariama and the descendant of Psilopterus (Pelecyornis), though this has since been disproven. The only other valid...