-
feature among most
bilaterians,
where the
special sense organs and
central nerve ganglia become concentrated at the
front end.
Bilaterians constitute one...
- It is
often suggested that the
basalmost bilaterians are the Xenacoelomorpha, with all
other bilaterians belonging to the
subclade Nephrozoa. However...
-
other bilaterians. However, a 2007
study concluded that
Acoela and
Nemertodermatida were two
distinct groups of
bilaterians. Xenoturbella, a
bilaterian whose...
- and
molecular markers that are
present in
bilaterians and
absent in cnidarians, ctenop****s, and
bilaterians. Steinmetz, Kraus, et al.
showed that the...
-
Nephrozoa is a
proposed major clade of
bilaterian animals. It
includes all
bilaterians other than Xenacoelomorpha. It
contrasts with the Xenambulacraria...
-
cnidarians and
bilaterians. The
first suggestion is that an
ancestral animal had no
symmetry (was asymmetric)
before cnidarians and
bilaterians separated into...
- have
striated muscle,
which in
bilaterians arises from the mesoderm. They did not
commit themselves on
whether bilaterians evolved from
early cnidarians...
-
estimates are
compatible with an
Ediacaran bilaterian,
although it is possible,
especially if
early bilaterians were small, that the
bilateria had a long...
- of the
nervous system in
radiata is
relatively unstructured.
Unlike bilaterians,
radiata only have two
primordial cell layers,
endoderm and ectoderm...
- be
first detected in
flatworms and the more
derived phyla, i.e. the
bilaterians. The less-advanced taxa (i.e. Placozoa, Porifera,
Ctenophora and Cnidaria)...
