- a
sister group to Leptocleididae. They are
known as
false pliosaurs.
Polycotylids first appeared during the
Albian stage of the
Early Cretaceous, before...
-
Martinectes is an
extinct genus of
polycotylid plesiosaur from the Late
Cretaceous Sharon Springs Formation of the
United States. The
genus contains a...
-
Unktaheela is an
extinct genus of
polycotylid plesiosaur from the Late
Cretaceous Sharon Springs Formation of the
United States. The
genus contains a...
-
Dolichorhynchops is an
extinct genus of
polycotylid plesiosaur from the Late
Cretaceous of
North America,
containing the
species D.
osborni and D. herschelensis...
-
Thililua is a
genus of
polycotylid plesiosaur,
containing one species, T. longicollis. The name
Thililua is
derived from that of an
ancient aquatic god...
- is
indeed a plesiosaur, it is
notable for
being the latest-surviving
polycotylid and is
currently the only one from the late Maastrichtian. However, Alhalabi...
-
Scalamagnus is an
extinct genus of
polycotylid plesiosaur from the Late
Cretaceous Tropic Shale Formation of the
United States. The
genus contains a single...
- L. and Gilette, D.D. (2009).
Unusual occurrence of
gastroliths in a
polycotylid plesiosaur from the
Upper Cretaceous Tropic Shale,
southern Utah. "PALAIOS"...
-
Trinacromerum is an
extinct genus of
sauropterygian reptile, a
member of the
polycotylid plesiosaurs. It
contains two species, T.
bentonianum and T. kirki. Specimens...
- ****ociated with 289 gastroliths,
which is
unusual in
comparison to most
polycotylid skeletons that
generally lack gastroliths.
Ranging from less than 0.1...
