- The
Katian is the
second stage of the
Upper Ordovician. It is
preceded by the
Sandbian and
succeeded by the
Hirnantian Stage. The
Katian began 452.8 million...
-
covers the
Sandbian and the
first half of the
Katian. The
Ashgill represents the
second half of the
Katian, plus the Hirnantian. The
Ashgill Epoch, the...
- and
Europe throughout the Ordovician,
though most
species occur in the
Katian stage of the Late Ordovician.
Reports of
Cameroceras fossils from the Wenlock...
- the late
Katian, just
before the
Katian-Hirnantian boundary,
likely reflects a
global enlargement of
oxygen minimum zones.
During the late
Katian, thallium...
-
during the
Katian:
three very
short glaciations during the
early Katian, the
Rakvere glaciation during the late
early Katian, a
middle Katian glaciation...
- The
Cottian Alps (/
ˈkɒtiən ˈælps/; French:
Alpes Cottiennes [alp kɔtjɛn]; Italian: Alpi
Cozie [ˈalpi ˈkɔttsje]) are a
mountain range in the southwestern...
- the
Upper Ordovician. It
follows the
Darriwilian and is
succeeded by the
Katian. Its
lower boundary is
defined as the
first appearance datum of the graptolite...
-
large community on the
Butterfield Overland Mail
stagecoach route. The
Katian Age of the
Ordovician Period of
geological time is
named for Katy Lake,...
- Kröger, B. (2025). "The
Lyckholm acme of
cephalopods –
Review of the late
Katian (Vormsi–Pirgu
regional stages)
Ordovician cephalopods of Estonia". European...
- graptolites, trilobites, bivalves,
corals and conodonts. 445.2 ± 0.9 *
Katian 452.8 ± 0.7 *
Sandbian 458.2 ± 0.7 *
Middle Darriwilian 469.4 ± 0.9 * Dapingian...
