Werkkalk Formation Stratigraphic range: Jurassic Oxfordian (stage) | |
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Type | Formation |
Lithology | |
Primary | Lime mudstone or marl |
Location | |
Coordinates | 49.0° N, 11.3° E |
Approximate paleocoordinates | 40.2° N, 19.5° E [1] |
Country | Bavaria, Germany |
The Werkkalk Formation is a geologic formation in Germany. It preserves radiolarian fossils dating back to the Oxfordian Stage of the Late Jurassic Period. The fossils may be pyritised. [1]
Germany, officially the Federal Republic of Germany, is a country in Central and Western Europe, lying between the Baltic and North Seas to the north, and the Alps, Lake Constance and the High Rhine to the south. It borders Denmark to the north, Poland and the Czech Republic to the east, Austria and Switzerland to the south, France to the southwest, and Luxembourg, Belgium and the Netherlands to the west.
The Oxfordian is, in the ICS' geologic timescale, the earliest age of the Late Jurassic epoch, or the lowest stage of the Upper Jurassic series. It spans the time between 163.5 ± 4 Ma and 157.3 ± 4 Ma. The Oxfordian is preceded by the Callovian and is followed by the Kimmeridgian.
The Late Jurassic is the third epoch of the Jurassic period, and it spans the geologic time from 163.5 ± 1.0 to 145.0 ± 0.8 million years ago (Ma), which is preserved in Upper Jurassic strata.
The Solnhofen Plattenkalk, or Solnhofen Limestone, is a Jurassic Konservat-Lagerstätte that preserves a rare assemblage of fossilized organisms, including highly detailed imprints of soft bodied organisms such as sea jellies. The most familiar fossils of the Solnhofen Plattenkalk include the early feathered theropod dinosaur Archaeopteryx preserved in such detail that they are among the most famous and most beautiful fossils in the world. The Solnhofen beds lie in the German state of Bavaria (Bayern), halfway between Nuremberg (Nürnberg) and Munich (München) and were originally quarried as a source of Lithographic limestone. The Jura Museum situated in Eichstätt, Germany has an extensive exhibit of Jurassic fossils from the quarries of Solnhofen and surroundings, including marine reptiles, pterosaurs, and one specimen of the early bird Archaeopteryx.
Turiasaurus is a genus of sauropod dinosaurs. It is known from a single fossil specimen representing the species T. riodevensis, found in the Kimmeridgian Villar del Arzobispo Formation of Teruel, Spain.
Eretmosaurus is an extinct genus of plesiosaur.
The Posidonia Shale is an Early Jurassic geological formation of south-western Germany, including exceptionally well-preserved complete skeletons of fossil marine fish and reptiles. The Posidonienschiefer, as German paleontologists call it, takes its name from the ubiquitous fossils of Posidonia bronni that characterize its fauna. The formation comprises finely laminated layers of oil shales formed of fine-grained sediments intercalated with bituminous limestones and crops out in a number of locations in southwestern Germany, although most remains are from near the village of Holzmaden. The European oil shales deposited on a sea floor during the Early Toarcian in the ancient Tethys Ocean are described as being deposited in an anoxic, or oxygen-depleted, deep water environment, although the details of the depositional environment are the subject of debate by researchers of the formation.
Coelodus is an extinct genus of prehistoric ray-finned fish from the Late Jurassic, Cretaceous and early Paleocene (Danian). Fossils of the genus have been found in:
Saurillodon was a genus of prehistoric lizard of the Late Jurassic of Portugal, UK and Morrison Formation of Western North America.
The Baños del Flaco Formation is a Late Jurassic to Early Cretaceous (Tithonian to Berriasian geologic formation in central Chile. The formation comprises limestones and sandstones deposited in a shallow marine to fluvial environment. Fossil ornithopod tracks have been reported from the formation.
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