- The
Ordovician (/ɔːrdəˈvɪʃi.ən, -doʊ-, -ˈvɪʃən/ or-də-VISH-ee-ən, -doh-, -VISH-ən) is a
geologic period and system, the
second of six
periods of the...
- Cap Late D O–S The Late
Ordovician m****
extinction (LOME),
sometimes known as the end-
Ordovician m****
extinction or the
Ordovician-Silurian extinction, is...
- The Late
Ordovician, also
called the
Upper Ordovician by geologists, is the
third and
final epoch of the
Ordovician period. At this time,
Western and Central...
- The
Early Ordovician is the
first epoch of the
Ordovician period,
corresponding to the
Lower Ordovician series of the
Ordovician system. It
began after...
-
geologic period and
system spanning 24.6
million years from the end of the
Ordovician Period, at 443.8
million years ago (Mya), to the
beginning of the Devonian...
-
appearing in the
Ordovician include:
Cyclopyge (Early to Late
Ordovician)
Selenopeltis (Early to Late
Ordovician)
Parabolina (Early
Ordovician)
Cheirurus (Middle...
-
subdivided into six
geologic periods (from
oldest to youngest), Cambrian,
Ordovician, Silurian, Devonian,
Carboniferous and Permian. Some
geological timescales...
- The
Great Ordovician Biodiversification Event (GOBE), was an
evolutionary radiation of
animal life
throughout the
Ordovician period, 40
million years after...
- Ice Age (EPIA), the
Early Paleozoic Icehouse, the Late
Ordovician glaciation, or the end-
Ordovician glaciation,
occurred during the
Paleozoic from approximately...
- K–Pg Tr–J P–Tr Cap Late D O–S The Cambrian–
Ordovician extinction event, also
known as the Cambrian-
Ordovician boundary event, was an
extinction event that...
