A New Ophthalmosaurid (Ichthyosauria) from Svalbard, Norway, and Evolution of the Ichthyopterygian Pelvic Girdle. [PDF]
PLoS ONE, 2017 In spite of a fossil record spanning over 150 million years, pelvic girdle evolution in Ichthyopterygia is poorly known. Here, we examine pelvic girdle size relationships using quantitative methods and new ophthalmosaurid material from the Slottsmøya ...
Lene Liebe Delsett +3 more
doaj +6 more sources
First three-dimensional skull of the Middle Triassic mixosaurid ichthyosaur Phalarodon fraasi from Svalbard, Norway [PDF]
Acta Palaeontologica Polonica, 2022 The marine Middle Triassic sediments of Svalbard are rich in fossiliferous material and are particularly well-known for marine reptile fossils. Here, we present a new specimen of the small-bodied mixosaurid ichthyosaur Phalarodon fraasi from the ...
AUBREY JANE ROBERTS +2 more
doaj +6 more sources
A prevalence of Arthropterygius (Ichthyosauria: Ophthalmosauridae) in the Late Jurassic—earliest Cretaceous of the Boreal Realm [PDF]
PeerJ, 2019 The ichthyosaur genus Arthropterygius Maxwell, 2010 is considered as rare and poorly known. However, considering the existing uncertainty regarding its position in respect to ophthalmosaurid subfamilies in recent phylogenies, it is among the key taxa for
Nikolay G. Zverkov +1 more
doaj +6 more sources
Pseudosuchian thermometabolism: A review of the past two decades. [PDF]
Anat Rec (Hoboken)Abstract Pseudosuchia, one of the two main clades of Archosauria, is today only represented by some 20 extant species, the crocodilians, representing only a fraction of its extinct diversity. Extant crocodilians are ectotherms but present morphological and anatomical features usually associated with endothermy.
Faure-Brac MG.
europepmc +2 more sources
OPHTHALMOSAURIDS (ICHTHYOSAURIA: THUNNOSAURIA): ALPHA TAXONOMY, CLADES AND NAMES [PDF]
Publicación Electrónica de la Asociación Paleontológica Argentina, 2015 . Thunnosaurian ichthyosaurs represent the paradigm of reptilian body designed for a pelagic life style. Most derived thunnosaurian, the ophthalmosaurids, have been traditionally considered as members of a declining lineage.
Marta S. Fernandez, Lisandro Campos
doaj +5 more sources
A large new Middle Jurassic ichthyosaur shows the importance of body size evolution in the origin of the Ophthalmosauria [PDF]
BMC Ecology and EvolutionThe Middle Jurassic is an important time period for the evolutionary history of marine reptiles as it represented a transitional phase for many clades. Notably, in ichthyosaurs, many early parvipelvian taxa went extinct.
Feiko Miedema +4 more
doaj +2 more sources
Postcranial anatomy of Besanosaurus leptorhynchus (Reptilia: Ichthyosauria) from the Middle Triassic Besano Formation of Monte San Giorgio (Italy/Switzerland), with implications for reconstructing the swimming styles of Triassic ichthyosaurs [PDF]
Swiss Journal of PalaeontologyBesanosaurus leptorhynchus Dal Sasso & Pinna, 1996 was originally described on the basis of a single complete fossil specimen excavated near Besano (Italy).
Gabriele Bindellini +4 more
doaj +2 more sources
Osteology and phylogeny of Late Jurassic ichthyosaurs from the Slottsmøya Member Lagerstätte (Spitsbergen, Svalbard) [PDF]
Acta Palaeontologica Polonica, 2019 Phylogenetic relationships within the important ichthyosaur family Ophthalmosauridae are not well established, and more specimens and characters, especially from the postcranial skeleton, are needed.
Lene L. Delsett +3 more
doaj +1 more source
Biological Reviews, Volume 96, Issue 5, Page 2229-2257, October 2021., 2021 ABSTRACT The morphology of the temporal region in the tetrapod skull traditionally has been a widely discussed feature of vertebrate anatomy. The evolution of different temporal openings in Amniota (mammals, birds, and reptiles), Lissamphibia (frogs, salamanders, and caecilians), and several extinct tetrapod groups has sparked debates on the ...
Pascal Abel, Ingmar Werneburg
wiley +1 more source
Ichthyosauria de Blainville 1835
, 2023 Ichthyosauria gen. et sp. indet. (Fig. 4) MATERIAL. — 001-Pad1, 001-Pad2, 001-Pad3, 001-Pad4, 001- Pad5: nine articulated anterior caudal centra and an isolated centrum fragment. LOCALITY AND HORIZON. — Paderna (Neviano degli Arduini municipality, Parma Province), Termina valley; “ Argille Varicolori della Val Samoggia ” Formation (AVS); lower Aptian ...
Freschi, Alessandro +6 more
openaire +1 more source