- 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...
-
affinities of
Sulcusuchus erraini and the Late
Cretaceous cir****-pacific
polycotylid diversity".
Cretaceous Research. 140: 105339. Bibcode:2022CrRes.14005339O...
-
approximately 2.3–2.6
metres (7.5–8.5 ft) long.
Adult individuals of
other small polycotylids such as
Dolichorhynchops and
Scalamagnus were
closer to 3
metres (9.8 ft)...
- (neck) vertebrae,
which is an
unusually high
number compared to
other Polycotylids, such as Dolichorhynchops,
which had only 19 neck vertebrae, and Polycotylus...
-
polycotyline polycotylids Trinacromerum and Dolichorhynchops. However,
several features separate Mauriciosaurus from all
other polycotylids, warranting...
- It has more neck
vertebrae than
other polycotylids, however.
Polycotylus is
thought to be a
basal polycotylid because it has more
vertebrae in its neck...
- hesperornithids, and
plesiosaurs including elasmosaurs such as
Terminonatator and
polycotylids like
Dolichorhynchops maintained their presence until around the end...
-
Scalamagnus is an
extinct genus of
polycotylid plesiosaur from the Late
Cretaceous Tropic Shale Formation of the
United States. The
genus contains a single...
-
pliosaur that
approaches closest to the distantly-related
piscivorous polycotylids,
having convergently evolved these traits more than 10
million years...
