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Tactopoda
Tactopoda
is a
proposed
clade
of
protostome
animals
that includes the
phyla
Tardigrada
and
Euarthropoda
, supported by various
morphological
observations
.
The
competing
hypothesis
is
Arthropoda
Classification
Phylum Tardigrada
*Class
Eutardigrada
*Class
Heterotardigrada
*Class
Mesotardigrada
Phylum Arthropoda
*Class
Pycnogonida
*Clade
Arachnomorpha
**Class †Trilobita
**Order †Aglaspida
**Order †Strabopida
**Class Pycnogonida
**Order †Cheloniellida
**Subphylum
Chelicerata
***Class
Xiphosura
***Class †Eurypterida
***Class †Chasmataspidida
***Class Pycnogonida
***Class
Arachnida
*Clade
Mandibulata
**Order †Euthycarcinoidea
**Subphylum
Myriapoda
***Class
Chilopoda
***Class
Symphyla
***Class
Diplopoda
***Class
Pauropoda
**Clade
Pancrustacea
***Clade
Oligostraca
****Class
Ostracoda
****Some of
polyphyletic
class
Maxillopoda
***Clade Altocrustacea
****Clade
Multicrustacea
*****The
rest
of polyphyletic class Maxillopoda
*****Class
Malacostraca
****Clade Allotriocarida
*****Class
Branchiopoda
*****Clade Miracrustacea
******Superclass
Xenocarida
*******Class
Cephalocarida
*******Class
Remipedia
******Subphylum
Hexapoda
*******Paraphyletic class
Entognatha
*******Clade
Ectognatha
********Class
Insecta
Phylogeny