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Rheiformes is an
order that
contains the
family Rheidae (rheas). It is in the
infraclass Paleognathae,
which contains all ratites.
Extant members are found...
- (flightless
birds without a keel on
their sternum bone) of the
order Rheiformes. They are
distantly related to the
African ostriches and Australia's emu...
- sole
living genus Rhea, but also
contains several extinct genera.
Order Rheiformes (Forbes, 1884) Furbringer, 1888 [Rheimorphae Bonaparte, 1849;
Rheae Forbes...
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between the four main
groups of non-ostrich
palaeognaths (Casuariiformes,
Rheiformes, Apteryformes+Aepyornithformes and Tinamiformes+Dinornithformes) are an...
-
Tinamiformes (tinamous)
Rheiformes (rheas)...
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Flightless birds are
birds that
cannot fly, as they have,
through evolution, lost the
ability to.
There are over 60
extant species,
including the well-known...
-
Notopalaeognathae is a
clade that
contains the
order Rheiformes (rheas), the
clade Novaeratitae (which
includes the c****owaries and emus, the kiwis, and...
- goddess. This
species is
placed in the
family Rheidae, and the
order Rheiformes. It
closely related to
other ratites such as emus, ostriches, c****owaries...
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Birds evolved from
certain feathered theropod dinosaurs, and
there is no real
dividing line
between birds and non-avian
dinosaurs except that some of the...
-
evolved mostly independently and thus
elevates the
families to
order rank (
Rheiformes,
Casuariformes etc.). The
longstanding story of
ratite evolution was that...
