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Taxon:
Family †
Polycotylidae
Williston, 1908
(reptile)
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Hierarchy
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Entity:
†Plesiosauroidea (Suborder)
..†Cimoliasauridae (Family)
..†Cryptoclididae (Family)
..†Elasmosauridae (Family)
..†Plesiosauridae (Family)
..†Polycotylidae (Family)
Synonyms
Synonymous name
:
†
Dolichorhynchopidae
(Family)
Welles, 1962
Ref:
PBDB
: 30 Apr 2013.
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Last updated:
21 Sep 2025