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ratio of any reptile.
Plesiosauroids are
known from the Jur****ic and
Cretaceous periods.
After their discovery, some
plesiosauroids were said to have resembled...
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Franconiasaurus (meaning "Franconia reptile") is an
extinct genus of
basal plesiosauroid plesiosaurs from the
Early Jur****ic of Germany. The
genus contains a...
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Eoplesiosaurus is an
extinct genus of
basal plesiosauroid known from the
Early Jur****ic
period (most
likely earliest Hettangian stage) of the
United Kingdom...
-
Latest Tri****ic, i.e. Rhaetian)
primitive pliosauroids were very like
plesiosauroids in
appearance and, indeed, used to be
included in the
family Plesiosauridae...
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Djupedalia is an
extinct genus of
cryptoclidid plesiosauroid plesiosaur known from the
uppermost Jur****ic of
central Spitsbergen, Norway. It is named...
- Thal****iodracon (tha-LAS-ee-o-DRAY-kon) is an
extinct genus of
plesiosauroid from the
Pliosauridae that was
alive during the Late Tri****ic-Early Jur****ic...
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Spitrasaurus is an
extinct genus of
cryptoclidid plesiosauroid plesiosaur known from the
uppermost Jur****ic of
central Spitsbergen,
Norway and likely...
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Microcleididae is an
extinct family of
basal plesiosauroid plesiosaurs from the
Early Jur****ic (middle
Sinemurian to late
Toarcian stages) of France,...
- was
Nothosaurus giganteus at 7 m (23 ft) in length. The
largest known plesiosauroid was an
indeterminate specimen possibly belonging to
Aristonectes (identified...
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Plesiosaurus (Gr****: πλησίος (plesios), near to + σαῦρος (sauros), lizard) is a
genus of extinct,
large marine sauropterygian reptile that
lived during...
