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Theria alongside Eutheria,
which contains the placentals.
Remains of
metatherians have been
found on all of Earth’s continents.
Distinctive characteristics...
-
Theria includes the
eutherians (including the
placental mammals) and the
metatherians (including the marsupials) but
excludes the egg-laying
monotremes and...
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Thylacosmilus is an
extinct genus of saber-toothed
metatherian mammals that
inhabited South America from the Late
Miocene to
Pliocene epochs.
Though Thylacosmilus...
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called metatherians,
probably split from
those of
placentals (eutherians)
during the mid-Jur****ic period,
though no
fossil evidence of
metatherians themselves...
- Luo and John Wible.
While initially suggested to be the
oldest known metatherian,
later studies interpreted it as a eutherian. Only one
fossil specimen...
- ὀδόντος [odous, odontos], tooth) is an
extinct order of
carnivorous metatherian mammals native to
South America,
related to
modern marsupials. They were...
-
Stagodontidae is an
extinct family of
carnivorous metatherian mammals that
inhabited North America and
Europe during the late Cretaceous, and possibly...
-
years ago) and is at most no
older than
Oligocene in age. Many
extinct metatherians, such as Alphadon, Peradectes, Herpetotherium, and Pucadelphys, were...
- "creodont"
genera Machaeroides and Apataelurus; and two
extinct lineages of
metatherian mammals, the
thylacosmilids of Spar****odonta, and deltatheroideans, which...
- Jur****ic or
early Cretaceous; it is
found in the
eutherian Eomaia and the
metatherian Sinodelphys, both
dated to 125 million
years ago.
Epipubic bones, a feature...
