-
Deuterostomes (from Gr****: lit. 'second mouth') are
bilaterian animals of the
superphylum Deuterostomia (/ˌdjuːtərəˈstoʊmi.ə/),
typically characterized...
- lineages, but are not part of the
formal definition: All
chordates are
deuterostomes. This
means that,
during embryonic development, the ****
forms before...
-
become its
digestive tube (the archenteron). In the sister-clade, the
deuterostomes (lit. 'second-mouth'), the
original dent
becomes the ****
while the...
-
Pharyngeal slits are filter-feeding
organs found among deuterostomes.
Pharyngeal slits are
repeated openings that
appear along the
pharynx caudal to the...
- as arthropods, molluscs, flatworms,
annelids and nematodes; and the
deuterostomes,
which include echinoderms,
hemichordates and chordates, the latter...
-
consists of triploblastic, eucoelomate, and
bilaterally symmetrical marine deuterostome animals,
generally considered the
sister group of the echinoderms. They...
-
bilaterian animals into two
natural groupings: the
protostomes and
deuterostomes. In
animals at
least as
complex as an earthworm, a dent
forms in one...
- ago in the
beginning of the
Cambrian period.
Initially proposed as a
deuterostome,
which would have made it the
oldest known species of this superphylum...
-
phyla Mollusca, Annelida, and Arthropoda.
Deuterostomes usually exhibit enterocoely; however, some
deuterostomes like
enteropneusts can
exhibit schizocoely...
-
would preclude vetulicolians representing a
stepwise development of
deuterostome characteristics, as the
genus with the most such characteristics, Vetulicola...
