- true ichthyosaurs.
Fossil remains of
derived marine ichthyopterygians, and the
oldest ichthyopterygian remains to date, are
known from the
Olenekian aged...
-
snout gently tapers,
compared to the more
rounded one of more
derived ichthyopterygians. The
postorbital underlaps the
elongate posterior process of the postfrontal...
-
phylogenetic placement of
other main
groups of
fossil sea
reptiles – the
ichthyopterygians (including ichthyosaurs) and the sauropterygians,
which evolved in...
- names, and
genera that are no
longer considered ichthyopterygian. Non-ichthyosaur
ichthyopterygians shall be
noted as such. This list
contains 108 genera...
-
studies of
ichthyopterygians did not
support this dichotomy.: 143 Motani's 1999
cladistic analysis found various Early Tri****ic
ichthyopterygians, such as...
-
Utatsusaurus is the earliest-known
ichthyopterygian....
-
smallest known ichthyopterygians,
measuring about 0.7–1 m (2.3–3.3 ft) long and
weighing 1.3–3.1 kg (2.9–6.8 lb).
Being a
basal ichthyopterygian, Chaohusaurus...
- sense, as
defined by
Motani in 1999,
differ from
their closest basal ichthyopterygian relatives in
certain traits.
Motani listed a
number of these. The external...
-
study recorded the
fossils of a
derived marine ichthyosauromorph (an
ichthyopterygian) in
earliest Tri****ic
rocks of Spitsbergen, Norway, just 2 million...
-
named by
Ryosuke Motani in his 1999
analysis of the
relationships of
ichthyopterygian marine reptiles and was
defined in
phylogenetic terms as a stem-based...
