- are
several species of
hemichordates, with a
moderate diversity of
embryological development among these species.
Hemichordates are
classically known to...
-
fourth chordate subphylum, but now is
treated as a
separate phylum.
Hemichordates are now
thought to be
closer to the Echinoderms, and
together they form...
-
involved in oral jaw formation. The
presence of
pharyngeal slits in
hemichordates led to
debates of
whether this
structure was
homologous to the slits...
-
found in all chordates,
including tunicates (in the
larval stage). Some
hemichordates also have a
tubular nerve cord. In the
early embryonic stage, it looks...
-
developmental biology:
hemichordates. Development, 139:2463-2475. Sato, A. & Holland, P. (2008).
Asymmetry in a
Pterobranch Hemichordate and the Evolution...
- ; and the deuterostomes,
which include the
three phyla echinoderms,
hemichordates and chordates, the
latter with the
vertebrates being its most successful...
-
ventral side in a protochordate. Some
biologists have
proposed that the
Hemichordates (specifically the Enteropneusta) may
represent an
intermediate body...
- Echinoderms,
hemichordates, cephalochordates,
urochordates Vertebrates...
-
echinoderms and
hemichordates; a
member of this
group is
called an ambulacrarian.
Phylogenetic analysis suggests the
echinoderms and
hemichordates separated...
-
worms (Enteropneusta). It has
zoological importance because,
being hemichordates, they are an "evolutionary link"
between invertebrates and vertebrates...