Paleontology (/ˌpeɪliɒnˈtɒlədʒi,ˌpæli-,-ən-/), also spelled palaeontology or palæontology, is the scientific study of life that existed prior to, and sometimes including, the start of the Holoceneepoch (roughly 11,700 years before present). It includes the study of fossils to classify organisms and study their interactions with each other and their environments (their paleoecology). Paleontological observations have been documented as far back as the 5th century BCE. The science became established in the 18th century as a result of Georges Cuvier's work on comparative anatomy, and developed rapidly in the 19th century. The term itself originates from Greekπαλα ('palaios', "old, ancient"), ὄν ('on', (gen.'ontos'), "being, creature"), and λόγος ('logos', "speech, thought, study").
Paleontology lies on the border between biology and geology, but differs from archaeology in that it excludes the study of anatomically modern humans. It now uses techniques drawn from a wide range of sciences, including biochemistry, mathematics, and engineering. Use of all these techniques has enabled paleontologists to discover much of the evolutionary history of life, almost all the way back to when Earth became capable of supporting life, nearly 4 billion years ago. As knowledge has increased, paleontology has developed specialised sub-divisions, some of which focus on different types of fossil organisms while others study ecology and environmental history, such as ancient climates. (Full article...)
Selected article on the prehistoric world and its legacies
Dromaeosauroides is a genus of dromaeosauridtheropoddinosaur from the Early Cretaceous of what is now Denmark. It is known from two teeth, the first of which was found in 2000. Based on the first tooth, the genus and species Dromaeosauroides bornholmensis was named in 2003. The genus name means "Dromaeosaurus-like", due to the similarity to the teeth of that genus, and the species name means "from Bornholm". The holotype tooth is 21.7 millimetres (0.85 in) long, and the second tooth is 15 millimetres (0.59 in). They are curved and finely serrated. In life, Dromaeosauroides would have been 3 to 4 metres (10 to 10 ft) in length, and weighed about 40 kilograms (88 lb). As a dromaeosaur it would have been feathered, and had a large sickle claw on its feet like its relatives Dromaeosaurus and Deinonychus. Some teeth from Britain that have been referred to the genus Nuthetes may also belong to Dromaeosauroides. Coprolites containing fish remains found in the Jydegaard Formation may belong to this animal.
Dromaeosauroides was discovered in the Jydegaard Formation in Robbedale, on the island of Bornholm in the Baltic Sea. It is one of the oldest known dromaeosaurs in the world, and the first known uncontested dromaeosaur from the Early Cretaceous of Europe. It lived in a coastal lagoon environment with sauropods, as evidenced by a possible titanosaur tooth. Remains and tracks of other dinosaurs have been found in several formations on Bornholm. (see more...)
The Petrified Forest is known for its fossils, especially fallen trees that lived in the Late Triassic, about 225 million years ago. The sediments containing the fossil logs are part of the widespread and colorful Chinle Formation, from which the Painted Desert gets its name. Beginning about 60 million years ago, the Colorado Plateau, of which the park is part, was pushed upward by tectonic forces and exposed to increased erosion. All of the park's rock layers above the Chinle, except geologically recent ones found in parts of the park, have been removed by wind and water. In addition to petrified logs, fossils found in the park have included Late Triassic ferns, cycads, ginkgoes, and many other plants as well as fauna including giant reptiles called phytosaurs, large amphibians, and early dinosaurs. Paleontologists have been unearthing and studying the park's fossils since the early 20th century. (see more...)