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Ambulacraria /ˌæmbjuːləˈkrɛəriə/, or
Coelomopora /siːləˈmɒpərə/, is a
clade of
invertebrate phyla that
includes echinoderms and hemichordates; a member...
- echinoderms, and
together they form the
clade Ambulacraria, the
sister phylum of the Chordates. Chordata,
Ambulacraria, and
possibly Xenacoelomorpha are believed...
- fish)
Superclass Osteichthyes (bony fish -
includes tetrapods)
Clade Ambulacraria Phylum Hemichordata class Enteropneusta (acorn worms)
class Planctosphaeroidea...
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changed considerably since 2000. A
different hypothesis is that the
Ambulacraria are
sister to
Xenacoelomorpha together forming the Xenambulacraria. The...
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blood vessel.
Together with the echinoderms, the
hemichordates form the
Ambulacraria,
which are the
closest extant phylogenetic relatives of chordates. Thus...
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which instead posits that
Xenacoelomorpha is most
closely related to
Ambulacraria.
Which hypothesis is
correct is controversial.
Authors supporting the...
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analyses suggest that the
xenacoelomorphs are
instead the
sister group of
Ambulacraria forming the
clade Xenambulacraria and that
despite their simple body...
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colleagues (2021),
proposes a
clade Xenambulacraria for the
Xenacoelamorpha +
Ambulacraria; this is
either within Deuterostomia, as
sister to Chordata, or the Deuterostomia...
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sister group of the Hemichordata, with
which they form the
crown group Ambulacraria. Two taxa of
uncertain placement,
Vetulocystida and Yanjia****a, have...
- out of
Bilateria and
Phylum Xenacoelomorpha is
basal Phylum Chordata Ambulacraria (unranked)
Phylum Hemichordata Phylum Echinodermata Phylum Cambroernida...
