- The
Devonian (/dəˈvoʊni.ən, dɛ-/ də-VOH-nee-ən, deh-) is a
geologic period and
system of the
Paleozoic era
during the
Phanerozoic eon,
spanning 60.3 million...
- the end of the
Emsian age. The
Middle Devonian epoch is
subdivided into two stages:
Eifelian and Givetian. In the
middle Devonian the
armored jawless fish...
- time in
particular the
Devonian,
which has been
dubbed the "
age of fishes" for the many
changes during that period. The Late
Devonian extinctions pla**** a...
-
years ago, at the
boundary between the
Frasnian age and the
Famennian age, the last
age in the
Devonian Period. Overall, 19% of all
families and 50% of...
- The
Early Devonian is the
first of
three epochs comprising the
Devonian period,
corresponding to the
Lower Devonian series. It
lasted from 419.2 ± 3.2 to...
- state, a north-trending fossil-rich
carbonate shelf of
Ordovician to
Devonian age,
termed the
carbonate or
eastern ****emblage,
gives way
westward to a...
-
approximate to the Lower,
Middle and
Upper divisions of the
Devonian.
Rocks of
probable lower Devonian age are
exposed near Yesnaby, on
western Mainland. A ridge...
-
except the
conifers and
flowering plants.
Fossil stoneworts of
early Devonian age that are
similar to
those of the
present day have been
described from...
- hills.
Numerous ****s of
different lithologies largely of
Devonian age but some of
Carboniferous age and with a
generally NE-SW
alignment occur throughout...
- ORS, is an ****emblage of
rocks in the
North Atlantic region largely of
Devonian age. It
extends in the east
across Great Britain,
Ireland and Norway, and...
