-
their bodies divided into segments, but
echiurans have
secondarily lost
their segmentation. The
majority of
echiurans live in
burrows in soft
sediment in...
- right; but a
molecular phylogenetics analysis in 1997
concluded that
echiurans are annelids.
Myzostomida live on
crinoids and
other echinoderms, mainly...
-
trochozoan clade,
which include the entoprocts, molluscs,
annelids (including
echiurans and sipunculans) and nemerteans. Together,
these phyla make up part of...
- mesoderm) is
derived from the 4d cell. Some of the
ectomesoderm in annelids,
echiurans and
molluscs is
derived from
cells 3a and 3b,
while the
ectomesoderm of...
- DNA has
confirmed their close relationship to the
Annelida (including
echiurans and pogonophorans). It has also been
shown that a
rudimentary neural segmentation...
-
polychaetes include the ****ellates (earthworms and leeches), sipunculans, and
echiurans. The
Pogonophora and
Vestimentifera were once
considered separate phyla...
-
Bonellia viridis, the
green spoonworm, is a
marine worm (class Polychaeta,
phylum Annelida)
noted for
displaying exceptional ****ual
dimorphism and for...
-
Listriolobus is a
genus of
echiurans belonging to the
family Echiuridae. The
genus has
almost cosmopolitan distribution. Species:
Listriolobus bahamensis...
-
Alaska plaice feed
mostly on polychaetes, but also eat
amphipods and
echiurans. Most
commercial fisheries do not
target Alaska plaice, and
bycatch by...
-
Urechis unicinctus,
known as the fat
innkeeper worm or **** fish, is a
species of
marine spoon worm in East Asia. It is
found in
Bohai Gulf of
China and...
