ABSTRACT A new ophthalmosaurid ichthyosaur, Sveltonectes insolitus, gen. et sp. nov., is
described from a sub-complete and three-dimensionally preserved specimen from the late …

Exceptionally well-preserved remains belonging to the Australian Early Cretaceous (Albian)
ichthyosaur Platypterygius longmani Wade, 1990 are described in detail. The material is …

Instead of teeth, modern mysticetes bear hair-fringed keratinous baleen plates that permit
various bulk-filtering predation techniques (from subsurface skimming to lateral benthic …

According to a longstanding paradigm, aquatic amniotes, including the Mesozoic marine
reptile group Ichthyopterygia, give birth tail-first because head-first birth leads to increased …

The hyoid apparatus is essential for underwater feeding in marine tetrapods, but it is unclear
whether this complex has evolved as convergently as other traits, such as dentition or …

Preserved indicators of diet are extremely rare in the fossil record; even more so is
unequivocal direct evidence for predator–prey relationships. Here, we report on a unique …

Birds are some of the most diverse organisms on Earth, with species inhabiting a wide
variety of niches across every major biome. As such, birds are vital to our understanding of …

Ophthalmosaurinae is a recently recognized clade of derived ichthyosaurs (marine reptiles)
ranging from the Bajocian (Middle Jurassic) to the late Albian (late Early Cretaceous) …

Background Ichthyosaurs are reptiles that inhabited the marine realm during most of the
Mesozoic. Their Cretaceous representatives have traditionally been considered as the last …

The dolphin-like ichthyosaurs–also known as 'fish lizards'–are extinct marine reptiles that
roamed the Mesozoic oceans for some 160 million years. As for most ancient vertebrates …