-
Ptychopariida is a large,
heterogeneous order of
trilobite containing some of the most
primitive species known. The
earliest species occurred in the second...
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diversified into the
major orders that
typified the Cambrian—Redlichiida,
Ptychopariida, Agnostida, and Corynexochida. The
first major crisis in the trilobite...
-
record along with
trilobites from the Redlichiida, Corynexochida, and
Ptychopariida orders, and were
highly diverse throughout the Cambrian. Agnostidan...
- small. The
families of
Harpetida were
formerly included in the
order Ptychopariida, but were
recently given their own
order (Ebach &
McNamara 2002). The...
- on the
taxonomy and
localities of
Ordovician trilobites (Trilobita:
Ptychopariida: Illaenidae, Panderidae) of
Leningrad Region".
BarSU Herald. Biological...
- event.
These typically small trilobites resemble those of the
order Ptychopariida, from
which the new
order Proetida was
separated in 1975 by
Fortey and...
- this order. The
first representatives of the
orders Corynexochida and
Ptychopariida also
appear very
early on and may
prove to be even
earlier than any...
-
candidates for the
first trilobites being librostomes in the
order ptychopariida; and all post-Devonian
trilobites being in the
order proetida, who are...
- and
planktonic forms like graptolites. The
trilobites Agnostida and
Ptychopariida completely died out, and the
Asaphida were much reduced. Brachiopods...
-
Conocoryphidae is a
family of
trilobites within the
order Ptychopariida.
Members of this
family have been
recorded from the
Cambrian to
early Ordivician...
