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Rhynchocephalia (/ˌrɪŋkoʊsɪˈfeɪliə/; lit. 'beak-heads') is an
order of lizard-like
reptiles that
includes only one
living species, the
tuatara (Sphenodon...
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members of the
order Rhynchocephalia. The only
surviving member of the
Rhynchocephalia is the tuatara.
Squamata and
Rhynchocephalia form the
subclass Lepidosauria...
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subclass or
superorder of reptiles,
containing the
orders Squamata and
Rhynchocephalia.
Squamata also
includes lizards and snakes.
Squamata contains over...
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member of a
distinct lineage, the
previously highly diverse order Rhynchocephalia. The name
tuatara is
derived from the Māori
language and
means "peaks...
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Michael J.; Ruta,
Marcello (May 2017). "Macroevolutionary
patterns in
Rhynchocephalia: Is the
tuatara (Sphenodon punctatus) a
living fossil?". Palaeontology...
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Thomas L.; Benton,
Michael J. (2017). "Macroevolutionary
patterns in
Rhynchocephalia: is the
tuatara (Sphenodon punctatus) a
living fossil?". Palaeontology...
- two subdivisions, Squamata,
which contains lizards and snakes, and
Rhynchocephalia, the only
extant species of
which is the tuatara. Lepidosauromorphs...
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Rhynchocephalia (tuatara and
their extinct relatives)
Squamata (lizards and snakes)...
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together in the
morphospace of
sphenodontians and
early lepidosaurs.
Rhynchocephalia Indeterminate Airhead West
Silty Facies Uncertain Fragments Rhynchocephalians...
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America by the
early Late Cretaceous. The
cause of the
decline of
Rhynchocephalia remains unclear, but has
often been
suggested to be due to competition...
