- ISBN 978-1-4081-2501-4. Fisher,
Harvey L (1944). "The
skulls of the
Cathartid vultures" (PDF). Condor. 46 (6): 272–296. doi:10.2307/1364013. JSTOR 1364013...
- 2008-12-09.
Retrieved 2008-01-13. Fisher,
Harvey L. (1944). "The
skulls of the
Cathartid vultures" (PDF). Condor. 46 (6): 272–296. doi:10.2307/1364013. JSTOR 1364013...
- Old
World vultures)
Pandionidae (ospreys) (1 or 2 species)
Cathartidae (
Cathartid vultures and condors)
Sagittariidae (secretarybird) †Teratornithidae And...
- 2307/1363312. JSTOR 1363312. Fisher,
Harvey L. (1944). "The
skulls of the
Cathartid vultures" (PDF). The Condor. 46 (6): 272–296. doi:10.2307/1364013. JSTOR 1364013...
-
Retrieved August 28, 2014. Fisher,
Harvey L. (1944). "The
skulls of the
Cathartid vultures" (PDF). Condor. 46 (6): 272–296. doi:10.2307/1364013. JSTOR 1364013...
-
Press ISBN 87-88757-16-1 p. 88 Ligon, J. D. (1967). "Relationships of the
cathartid vultures".
Occasional Papers of the
Museum of Zoology,
University of Michigan...
-
Oligocene deposits of Weld County, Colorado,
which also
heralded the
cathartid Phasmagyps.
First described by
Alexander Wetmore, the bird was referred...
- PMID 17609382.[failed verification] Ligon, J.
David (1967). "Relationships of the
cathartid vultures".
Occasional Papers of the
Museum of Zoology,
University of Michigan...
-
Retrieved October 22, 2017. Fisher,
Harvey L (1944). "The
skulls of the
Cathartid vultures" (PDF). Condor. 46 (6): 272–296. doi:10.2307/1364013. JSTOR 1364013...
- "tree bird"), also
called the
Argentinian vulture, is an
extinct genus of
cathartid (New
World vulture),
known from Argentina. The
genus contains two species...
