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Graptolites are a
group of
colonial animals,
members of the
subclass Graptolithina within the
class Pterobranchia.
These filter-feeding
organisms are...
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Dictyonema is a
genus of
dendroid graptolites in the
order Dendroidea.
Fossils of
Dictyonema are
found from the
Upper Cambrian to the
Devonian (age range:...
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Graptolite Island is an
island 0.8 km (0.50 mi) long in the north-east part of
Fitchie Bay,
lying off the south-east
portion of
Laurie Island in the South...
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clade as the
extinct graptolites, and
phylogenetic analysis suggests that the
pterobranchs are
living members of the
graptolite clade.
Pterobranchs are...
-
commonly called acorn worms, and the Pterobranchia,
which includes the
graptolites. A
third class, Planctosphaeroidea, is
proposed based on a
single species...
-
geologist who
developed original theories regarding the life and
habits of
graptolites. She was a protégée of Owen
Thomas (O.T.) Jones, a
Welsh geology professor...
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Axonophora is an
extinct suborder of
graptolites. It
primarily consists of the
biserial graptolites, and also
includes the
retiolitids and monograptids...
-
boundary of the
Darriwilian is
defined as the
first appearance of the
graptolite species Undulograptus austrodentatus around 469.4
million years ago. It...
- This list of
graptolites is an
attempt to
create a
comprehensive listing of all
genera from the
fossil record that have ever been
considered to be members...
- 1974. The
boundaries were
established by the
fauna of
conodonts and/or
graptolites. In 1995, the
Subcommission on
Ordovician Stratigraphy, with the support...
