- vertebrates). The
subphylum was at one time
called Urochordata, and the term
urochordates is
still sometimes used for
these animals. They are the only chordates...
-
eliminated some
older ideas, but
opened up the
possibility that
tunicates (
urochordates) are "basal deuterostomes",
surviving members of the
group from which...
- Echinoderms, hemichordates, cephalochordates,
urochordates Vertebrates...
- Echinoderms, hemichordates, cephalochordates,
urochordates Vertebrates...
-
genetic studies of
these pharyngeal structures between hemichordates and
urochordates have
brought about important insights regarding the
evolution of the...
-
filaments that have been
found only in
chordates (vertebrates, amphioxus,
urochordates).
Nematodes and many
other non-chordate
animals seem to have only type...
- filter-feeding, and is
found in
adult cephalochordates (lancelets) and
urochordates (sea squirts,
salps and larvaceans), as well as in the
larvae of some...
- that is
comparable to
segmentation in vetulicolians, that the **** of
urochordates is
within the atrium,
while that of
vetulicolians is
positioned at the...
-
swimming tadpole larvae,
which are the
common larval stage for
other urochordates.
Pyrosomes are ovoviviparous,
meaning the eggs
develop inside the "mother"...
-
include cnidarians, ctenop****s, chaetognaths, molluscs, arthropods,
urochordates, and
annelids such as polychaetes. Many
larger animals begin their life...
