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A fossil discovery from Scotland has provided new information on the early evolution of lizards, during the time of the dinosaurs, reports a study involving UCL researchers. The tiny skeleton discovered on the Isle of Skye, called Bellairsia gracilis , is only 6 cm long and dates from the Middle Jurassic, 166 million years ago.

The first appearance of shark-like 'jawed fish' may have happened some 15 million years earlier than previously thought, according to new evidence. A handful of fossil teeth from a completely new species, uncovered from rock samples found in China, suggest jawed fish emerged some time at the end of the Ordovician, or beginning of the Silurian period, around 440 million years ago.

An extinct species of lizard-like reptile that belongs to the same ancient lineage as New Zealand's living tuatara has been discovered by a team involving a UCL researcher. The researchers describe the new species Opisthiamimus gregori , which once inhabited Jurassic North America about 150 million years ago alongside dinosaurs like Stegosaurus and Allosaurus , in a paper published in the Journal of Systematic Palaeontology .

Recent research regarding a dinosaur nicknamed April which previously called Manchester Museum home has revealed rare new findings. Scientists made the discovery of gastroliths (stomach stones) inside the Tenontosaurus which is unusually rare. This represents the second oldest occurrence of gastroliths in an ornithopod dinosaur and the first to be identified in a more derived ornithopod.

Researchers from the Royal Veterinary College, among other international partners across Switzerland, USA, Australia and South Africa, used 3D modelling to understand more than just the size of the megalodon An international collaborative team of researchers, including from the Royal Veterinary College (RVC), has used advanced 3D modelling to discover the movement and feeding ecology of the biggest shark to have ever roamed the oceans - the megalodon ( Otodus megalodon ).

Large dinosaur predators, such as Tyrannosaurus rex, evolved different shapes of eye sockets to better deal with high bite forces, new research has shown. While in many animals - and most dinosaurs - the eye socket is just a circular hole in the skull housing the eyeball, this is very different in large carnivores.

Fossils discovered in Scotland represent some of the world's oldest salamanders, according to a new study led by UCL researchers. The research team analysed 166-million-year-old fossils of a type of animal called Marmorerpeton , found in Middle Jurassic rocks on the Isle of Skye. They found that it has several key salamander traits, but is not part of the modern group of salamanders.

Scientists have finally put to bed a long-standing question over the role of Earth's orbit in driving global ice age cycles. In a new study published today , the team from Cardiff University has been able to pinpoint exactly how the tilting and wobbling of the Earth as it orbits around the Sun has influenced the melting of ice sheets in the Northern Hemisphere over the past 2 million years or so.

An international team of scientists from UCL, the Swedish Museum of Natural History, the University of Florence and Natural History Museum have found a remarkable type of fossilization that has remained almost entirely overlooked until now. The fossils are microscopic imprints, or "ghosts", of single-celled plankton, called coccolithophores, that lived in the seas millions of years ago, and their discovery is changing our understanding of how plankton in the oceans are affected by climate change.

A fragment of the asteroid that hit the Earth 66 million years ago and led to the extinction of the dinosaurs, and the first ever fossilised remains of a dinosaur killed by the asteroid impact, are thought to be amongst the latest finds unearthed by University of Manchester palaeontologist Robert DePalma at a dig site he named Tanis in North Dakota.

A new study published in Nature reveals that Spinosaurus, among the largest carnivorous dinosaurs ever discovered, could hunt underwater. New research by a multi-institution team including the Field Museum of Natural History, Chicago, the University of Oxford and the University of Cambridge used X-ray imaging of fossilised bones to analyse bone density.

The fossilised remains of Britain's largest ichthyosaur, colloquially known as a 'Sea Dragon', have been discovered at the Rutland Water Nature Reserve, owned and run by Anglian Water. It is the biggest and most complete skeleton of its kind found to date in the UK and is also thought to be the first ichthyosaur of its species found in the country.

The most detailed timeline of mammal evolution to date has been set out in a new study co-led by UCL researchers. The Nature paper describes a new and fast computational approach to obtain precisely dated evolutionary trees, known as 'timetrees'. The authors used the novel method to analyse a mammal genomic dataset and answer a long-standing question around whether modern placental mammal groups originated before or after the Cretaceous-Palaeogene (K-Pg) mass extinction, which wiped out over 70% of all species, including all dinosaurs.

A 72- to 66-million-year-old embryo found inside a fossilised dinosaur egg sheds new light on the link between the behaviour of modern birds and dinosaurs, according to a new study. The embryo, dubbed 'Baby Yingliang', was discovered in the Late Cretaceous rocks of Ganzhou, southern China and belongs to a toothless theropod dinosaur, or oviraptorosaur.

Giant, long-necked sauropods, thought to include the largest land animals ever, preferred to live in warmer regions on Earth, suggesting they may have had a different physiology from other dinosaurs, finds a new study led by researchers at UCL and the University of Vigo. The study, published in the journal Current Biology , investigated the enigma of why sauropod fossils are only found at lower latitudes, while fossils of other main dinosaur types seem ubiquitously present, with many located in the polar regions.

Theropod dinosaurs evolved more robust jaws through time allowing them to consume tougher food, a new study reveals. Researchers used digital modelling and computer simulation to uncover a common trend of jaw strengthening in theropods - expanding the rear jaw portion in all groups, as well as evolving an upturned jaw in carnivores and a downturned jaw in herbivores.

An international team led by researchers from The University of Manchester today published in Scientific Reports a groundbreaking study that sheds new light on the timing associated with the dinosaur-killing asteroid impact that occurred 66 million years ago. The study, " Seasonal calibration of the end-Cretaceous Chicxulub Impact Event ", provides new evidence that helps us to understand the significance of the timing for the events that brought an end to the dinosaurs—and 75% of life on Earth.

A research team led by scientists from Cardiff University has provided the first ever 3D visualisation of an ammonite - a marine mollusc group that became extinct with the dinosaurs around 66 million years ago. The new images have allowed the team to analyse the muscles and organs of an ammonite for the very first time, throwing new light on how the cephalopod mollusc was able to swim through the oceans and defend itself from predators.

A Triassic herbivore, known for its supposed similarities to a modern-day ostrich, has been revealed to have an entirely different approach to feeding from previously thought, according to research involving UCL and University of Birmingham researchers. The new findings, published in The Anatomical Record , reveal a much broader diversity of herbivore behaviour during the Triassic period than has been recognised to date.

Scientists from the Natural History Museum and the University of Birmingham have described a new species of dinosaur from specimens found in a quarry in Pant-y-ffynnon in southern Wales. Following on from a new species of ankylosaur , Pendraig milnerae marks the second new species of dinosaur described by Museum scientists in the last few weeks.