-
years ago). The
Olenekian is
sometimes divided into the
Smithian and the
Spathian subages or substages. The
Olenekian follows the
Induan and is followed...
- been
linked to a
number of
smaller biotic crises,
including the Smithian-
Spathian, Olenekian-Anisian, Middle-Late Anisian, and Anisian-Ladinian extinction...
-
Dienerian subages and the
Olenekian is
subdivided into the
Smithian and
Spathian subages. The
Lower Tri****ic
series is
coeval with the
Scythian Stage, which...
- (high-quality
fossil beds), the
Dienerian aged
Guiyang biota and the
earliest Spathian aged
Paris biota stand out due to
their exceptional preservation and diversity...
-
Spathian,
periodically setting back and
restarting the
biotic recovery process. The
decline in
continental weathering towards the end of the
Spathian...
- Mammals,
which evolved from
eucynodont synapsids that
survived the Smithian–
Spathian boundary event,
diversified but
remained small and rare in the subsequent...
- Idaho. The
Paris biota was
found in
layers dating back to the
earliest Spathian, a
substage of the
Olenekian stage of the
Early Tri****ic epoch. The biostratigraphy...
- End-Guadalupian
Extinction Event, the End-Permian
Extinction Event, the Smithian-
Spathian Extinction, the Tri****ic-Jur****ic
Extinction Event, the
Toarcian Oceanic...
-
definite sauropterygian with
exact stratigraphic datum lies
within the
Spathian division of the
Olenekian age in
South China.
Early examples were small...
- Tri****ic
series be
divided into the: Griesbachian, Dienerian, Smithian, and
Spathian. The
former two
roughly correspond with the Induan. Tozer's
timescale became...
