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Taxon:
Suborder
Sphenodontoidea
Lydekker, 1888
(reptile)
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Entity:
Rhynchocephalia (Order) - tuataras
..[†Choristoderoidea] (Suborder)
..[†Clarazidaurida] (Suborder)
..[†Clarazisaurida] (Suborder)
..[†Clarazisauroidea] (Suborder)
..[†Eosuchoidea] (Suborder)
..†Gephyrosauridae (Family)
..[†Pleurosaurida] (Suborder)
..[†Pleurosauroidea] (Suborder)
..[†Rhynchosaurida] (Suborder)
..[†Sapheosauridae] (Family)
..[†Sapheosauroidea] (Suborder)
..Sphenodontia (Clade)
..[Sphenodontida] (Suborder)
..[†Thalattosauroidea] (Suborder)
..[Sphenodontoidea] (Suborder)
....[†Palacrodontidae] (Family)
Authorship
Original name
:
Lydekker, 1888.
Original rank
:
Lydekker, 1888.
Original spelling
:
Lydekker, 1888.
Types
Type
:
Sphenodon
(Genus)
Gray, 1831
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Last updated:
28 Aug 2026