-
Ptychopariida is a large,
heterogeneous order of
trilobite containing some of the most
primitive species known. The
earliest species occurred in the second...
- what are now
members of
orders Ptychopariida, Asaphida,
Proetida and
Harpetida were
grouped together as
order Ptychopariida;
subclass Librostoma was erected...
- 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...
-
record along with
trilobites from the Redlichiida, Corynexochida, and
Ptychopariida orders, and were
highly diverse throughout the Cambrian. Agnostidan...
- and
planktonic forms like graptolites. The
trilobites Agnostida and
Ptychopariida completely died out, and the
Asaphida were much reduced. Brachiopods...
- †Redlichiida
Order †Lichida
Order †Phacopida
Order †Proetida
Order †
Ptychopariida Order †Isoxyida
Order †Hymenocarina
Order †Mollisoniida
Order †Bradoriida...
- 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...
- event.
These typically small trilobites resemble those of the
order Ptychopariida, from
which the new
order Proetida was
separated in 1975 by
Fortey and...
- 2011.
Archived from the
original on 2020-11-12.
Retrieved 2023-01-21. "Order
Ptychopariida". A
Guide to the
Orders of Trilobites. Sam Gon III. 2009....
