Temporal range: Early Eocene (Itaboraian-Casamayoran) ~53–48.6 Ma
PreꞒ
Ꞓ
O
S
D
C
P
T
J
K
Pg
N
↓
Scientific classification
Domain:
Eukaryota
Kingdom:
Animalia
Phylum:
Chordata
Class:
Aves
Infraclass:
Palaeognathae
Order:
Casuariiformes
Genus:
†Diogenornis Alvarenga 1983
Type species
†Diogenornis fragilis
Alvarenga 1983
Diogenornis is an extinct genus of ratites, that lived during the Early Eocene (Itaboraian to Casamayoran in the SALMA classification).[1] It was described in 1983 by Brazilian scientist Herculano Marcos Ferraz de Alvarenga based on fossils found in the Itaboraí Formation in southeastern Brazil.[2] The type species is D. fragilis. It grew to about two thirds the size of the modern greater rhea, at about 90 centimetres (3.0 ft) of height.[3]
^Diogenornis at Fossilworks.org
^Alvarenga, H.M.F. (1983) Uma ave ratitae do Paleoceno Brasileiro: bacia calcária de Itaboraí, Estado do Rio de Janeiro, Brasil. Boletim do Museu Nacional, Nova Série, Geologia 41: 1–8
^Cite error: The named reference mayr2009 was invoked but never defined (see the help page).
Diogenornis is an extinct genus of ratites, that lived during the Early Eocene (Itaboraian to Casamayoran in the SALMA classification). It was described...
1849; Rheae Forbes 1884] Family †Opisthodactylidae Ameghino 1895 Genus ?†Diogenornis de Alvarenga 1983 (Late Paleocene) – possibly a member of Casuariiformes...
fossils date to the Paleocene epoch about 56 million years ago (e.g., Diogenornis, a possible early relative of the rhea). However, more primitive paleognaths...
sufficient size are known from that time and place; while the large Diogenornis and Eremopezus are known from the Eocene, the former lived in South America...
Global Information