- the
Roadian is an age or
stage of the Permian. It is the
earliest or
lower of
three subdivisions of the
Guadalupian Epoch or Series. The
Roadian lasted...
-
There are
three stages in the guadalupian, they are the
Roadian, Wordian, and Capitanian. The
Roadian Stage was
between 272.3 ± 0.5 – 268.8 ± 0.5 Mya. Olson's...
- late
Lower Permian (Kungurian) and
possibly the
early Middle Permian (
Roadian) in what is now
Texas and Oklahoma. The
large number of
specimens found...
-
years ago (Ma). It was
preceded by the
Artinskian and
followed by the
Roadian. The
Kungurian is
named after the
Russian city of
Kungur in Perm Krai....
- and
colleagues in 1992
proposed a
tripartite scheme,
advocating that the
Roadian-Capitanian was
distinct from the rest of the Late Permian, and
should be...
- the last
known caseids come from the
strata of the
middle Permian (Upper
Roadian-Wordian) of
France and
European Russia,
where they
cohabited notably with...
- or
earliest Permian (****elian) to the
early Guadalupian epoch (latest
Roadian stage) of
North America, China, Germany,
Russia and France. The bolosaurids...
- zone of
Afganella schenki Olson’s Extinction, in the
early Guadalupian (
Roadian, Wordian), led to an
extended period of low
diversity when
worldwide two-thirds...
- doi:10.18814/epiiugs/1998/v21i1/003.
Retrieved 7
December 2020. "GSSP for
Roadian Stage".
International Commission on Stratigraphy.
Retrieved 13 December...
-
Ophiacodontidae died out
around the Kungurian–
Roadian boundary,
while Caseidae and
Therapsida diversified;
later in the
Roadian or
slightly later Sphenacodontidae...
