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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...
-
animal species.
Bilaterians are
traditionally classified as
either deuterostomes or protostomes,
based on
whether the
blastopore becomes the **** or...
- 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...
-
separated around 533
million years ago. The
Ambulacraria are part of the
deuterostomes, a
clade that also
includes the many Chordata, and the few
extinct species...
-
bilaterian animals into two
natural groupings: the
protostomes and
deuterostomes. In
animals at
least as
complex as an earthworm, a dent
forms in one...
-
would preclude vetulicolians representing a
stepwise development of
deuterostome characteristics, as the
genus with the most such characteristics, Vetulicola...
