The largest phylogenetic analysis of ichthyosaurs to date is presented, with 114 ingroup taxa
coded at species level. Completeness of the taxa included varied from> 98% to< 2%; 10 …

Ichthyosaurs are an extinct group of fully marine tetrapods that were well adapted to aquatic
locomotion. During their approximately 160 Myr existence, they evolved from elongate and …

Aegicetus gehennae is a new African protocetid whale based on a partial skull with much of
an associated postcranial skeleton. The type specimen, Egyptian Geological Museum, Cairo …

Cetaceans represent the most diverse clade of extant marine tetrapods. Although the
restructuring of oceans could have contributed to their diversity, other factors might also be …

Hydrofoil‐shaped limbs (flipper‐hydrofoils) have evolved independently several times in
secondarily marine tetrapods and generally fall into two functional categories:(1) those that …

A new species of ichthyosauriform is recognized based on 20 specimens, including nearly
complete skeletons, and named Chaohusaurus brevifemoralis. A part of the specimens was …

The similarities between ichthyosaurs and sharks are a text-book example of convergence,
and similarities in tail morphology have led many to theorize that they had similar swimming …

The Encyclopedia of Paleontology is designed to address the shortage of general reference
works on both vertebrate and invertebrate paleontology and to serve the needs of students …