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Tetrapulmonata is a non-ranked supra-ordinal
clade of arachnids. It is
composed of the
extant orders Uropygi (whip scorpions),
Schizomida (short-tailed...
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Arachnida into two main groups: The
pulmonate arachnids book
lungs present;
Tetrapulmonata (whip scorpions, Schizomida, Amblypygi, and spiders) and
scorpions The...
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slowly evolving genes;
dashed lines represent uncertain placements.
Tetrapulmonata, here
consisting of Araneae,
Amblypygi and
Uropygi (Thelyphonida s.s...
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pincers (second appendages) of scorpions.
Scorpiones is
sister to the
Tetrapulmonata, a
terrestrial group of
pulmonates containing the
spiders and whip scorpions...
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Uraraneida in the
Tetrapulmonata, a
clade of
arachnids defined by the
apomorphy (derived feature) of two
pairs of book lungs. The
Tetrapulmonata divide into...
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elements are also
present in the
exoskeleton of the
other members of
Tetrapulmonata.
Amblypygids have
eight legs, but use only six for walking,
often in...
- Gerhard; Kamenz,
Carsten (2006). "The book
lungs of
Scorpiones and
Tetrapulmonata (Chelicerata, Arachnida):
evidence for
homology and a
single terrestrialisation...
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composed of two segments. This type of
chelicera occurs exclusively in the
Tetrapulmonata.
Jackknife chelicera are
described in two
different forms: orthognathous...
- Arachnidea, etc.), but for
which the name
Tetrapulmonata has
become most widespread.
Members of the
Tetrapulmonata include spiders (Araneae), whip spiders...
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second pair on
third abdominal segment found in the
other orders of
Tetrapulmonata is lost.
Schizomids are
generally tropical and
subtropical creatures...
