- with
their common ancestor,
Plionarctos, in the
Middle Hemphillian (earliest Late Miocene, ~10Ma) of
North America;
Plionarctos is last
recorded in the early...
- 7—9.2 Mya)
preceded Plionarctos by only a few
thousand years and was a
contemporary of that bear and
shared its habitat.
Plionarctos preceded and was also...
-
living genus under the
Tremarctinae subfamily, with the
other genera,
Plionarctos, Arctodus, and
Arctotherium all
being extinct. †Tremarctos florid****...
- with
their common ancestor,
Plionarctos, in the
Middle Hemphillian (earliest Late Miocene, ~10 Ma) of
North America;
Plionarctos is last
recorded in the early...
-
formation of the
Isthmus of Panama.
Their earliest fossil representative is
Plionarctos in
North America (c. 10–2 Ma). This
genus is
probably the
direct ancestor...
- 5–0.010 Mya) A.
vetustum (0.7–0.3 Mya) A.
wingei (0.1–0.012 Mya)
Genus Plionarctos† (10.3–1.8 Mya) P.
edensis (10.3–4.9 Mya) P.
harroldorum (4.9–1.8 Mya)...
- †Arctodus †Arctotherium †
Plionarctos Tremarctos †T. florid****...
- †Arctodus †Arctotherium †
Plionarctos Tremarctos †T. florid****...
- in the form of
Plionarctos. The medium-sized
Arctodus pristinus,
Tremarctos florid**** and
Arctotherium sp.
evolved from
Plionarctos in the
Blancan age...
- †
Plionarctos...
