Alternative Title: Archaeopteryx lithographica Archaeopteryx , genus of feathered dinosaur that was once thought to be the oldest known fossil bird . The specimens date to approximately 150 million years ago, during the Late Jurassic Epoch (163.5 million to 145 million years ago), and all were found in the Solnhofen Limestone Formation in Bavaria , Germany, starting in 1861 L' archeotterige, o archeopterige, (Archaeopteryx, dal greco ἀρχαῖος, archàios, antico, e πτέρυξ, ptéryx, piuma o ala; AFI: /arkeotˈtɛriʤe/) è un genere estinto di dinosauro simile ad un uccello, una forma transitoria tra i dinosauri piumati non-aviari e i moderni uccelli
Az Archaeopteryx lithographica az Archaeopteryx nem jelenlegi egyetlen érvényes faja.Minden ismert példánya a solnhofeni litográf pala kemény, lemezes mészkövéből került elő. A késő jura során élt, a leletek egy korabeli nagy, erősen sós vízű lagúna meszes iszapjában konzerválóldtak.. Az 1990-es évekig úgy gondolták, hogy az A. lithographica volt az egyetlen tollas. Archaeopteryx is an iconic fossil, often thought of as the 'missing-link' between dinosaurs and birds.It was first described in 1861 by the German palaeontologist Hermann von Meyer (1801-1869). Since then Archaeopteryx has been the focus of controversy surrounding the origin of birds and their links with dinosaurs.. Only eleven specimens and an isolated feather have so far been found, all. Archaeopteryx: An Early Bird - University of California, Berkeley Museum of Paleontology. Hozzáférés ideje: 2006-OCT-18. Archaeopteryx lithographica - Nick Longrich, University of Calgary. Discusses how many wings an Archaeopteryx had and other questions. Journal of Dinosaur Paleontology - With many articles on dinosaur-bird links A particulary important and still contentious discovery is Archaeopteryx lithographica, found in the Jurassic Solnhofen Limestone of southern Germany, which is marked by rare but exceptionally well preserved fossils. Archaeopteryx is considered by many to be the first bird, being of about 150 million years of age There are two species of Archaeopteryx: A. lithographica and A. siemensii. Archaeopteryx lived around 150 million years ago — during the early Tithonian stage in the late Jurassic Period — in what..
Archaeopteryx looked very similar to some modern birds, and several of the specimens clearly show what appear to be true feathers. Upon closer examination, however, scientists have found some striking differences between Archaeopteryx and modern birds. Archaeopteryx had a long, stiff, bony tail, unlike modern birds. Each wing had two separate. archaeopteryx lithographica, arheopteryx, prehistoric bird, prehistoric, the prehistoric, dinosaur, carnivore, bird, skeleton, fossil Public Domai