- was
traditionally broken into
Early (Tremadocian and Arenig),
Middle (
Llanvirn (subdivided into
Abereiddian and Llandeilian) and Llandeilo) and Late (Caradoc...
- The type
specimen of H. solo was
found in
marine strata of the
Arenig to
Llanvirn-aged
Zitai Formation of
Middle Ordovician southern China and is
named after...
-
evidence of
plant life on land,
dating from the mid-Ordovician (early
Llanvirn, ~470 million
years ago), a
period from
which no
macrofossils have yet...
- longest-lasting
order of strophomenates,
surviving from the
Middle Ordovician (“
Llanvirn”) up
until the Late Permian. Externally, many
orthotetides are difficult...
- ****igned to the
Cyclopygidae family, that
lived during the
Middle Ordovician (
Llanvirn), and have been
found in what are
today the
Czech Republic and in Wales...
-
scoltonensis G. clusus, was
found in the
Middle Ordovician of
Canada (
Llanvirn,
Lower Head, Newfoundland) G. cr****us, has been
identified from the Lower...
- Polarinstitutt. Turvey,
Samuel T. "Asaphoid
trilobites from the Arenig–
Llanvirn of the
South China plate."
Palaeontology 50.2 (2007): 347-399.[1] v t e...
-
Scientific Interest (or SSSI) in Anglesey,
North Wales, for its
exposures of
Llanvirn (Ordovician) rocks. It has been
designated as a Site of
Special Scientific...
-
cosmopolitan distribution and
lived from the
Middle to the
Upper Ordovician (
Llanvirn to Ashgill). It has been
found in
Canada (Quebec and Newfoundland), China...
-
slates and
shale in
Wicklow and Wexford. It may be
mentioned here that the "
Llanvirn"
Series of H.
Hicks was
equivalent to the bifidus[clarification needed]...
