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Paleocoma
''Palaeocoma'' is an extinct genus of brittle stars that lived during the Middle Triassic to Early Jurassic Periods. Its fossils have been found in Europe. Distribution The genus ''Palaeocoma'' was revised by Hess (1960, 1962) and is known from the Middle Triassic (Ladinian) to the Lower Jurassic (Toarcian) with occurrences reported from the United Kingdom, France, Luxembourg, Germany, Switzerland, Italy, and Serbia and Montenegro. Type species ''Palaeocoma milleri'' ( Phillips, 1829) ''P. gaveyi'' and ''P. egertoni'' according to Jaselli (2015, p. 192) an Early Jurassic (Sinemurian and Pliensbachian) species recorded from France, Germany, Luxembourg, the United Kingdom and Lombardy in Italy. Synonymised names :''Ophioderma carinata'' Wright, 1866 :''Ophioderma egertoni'' ( Broderip, 1840) :''Ophioderma gaveyi'' Wright, 1854 :''Ophioderma milleri'' (Phillips, 1829) :''Ophiura egertoni'' Broderip, 1840 :''Ophiura milleri'' Phillips, 1829 :''Ophiurella milleri'' (Phillips, ...
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Ladinian
The Ladinian is a stage and age in the Middle Triassic series or epoch. It spans the time between Ma and ~237 Ma (million years ago). The Ladinian was preceded by the Anisian and succeeded by the Carnian (part of the Upper or Late Triassic). The Ladinian is coeval with the Falangian regional stage used in China. Stratigraphic definitions The Ladinian was established by Austrian geologist Alexander Bittner in 1892. Its name comes from the Ladin people that live in the Italian Alps (in the Dolomites, then part of Austria-Hungary). The base of the Ladinian Stage is defined as the place in the stratigraphic record where the ammonite species '' Eoprotrachyceras curionii'' first appears or the first appearance of the conodont ''Budurovignathus praehungaricus''. The global reference profile for the base (the GSSP) is at an outcrop in the river bed of the Caffaro river at Bagolino, in the province of Brescia, northern Italy.The GSSP was established by Brack ''et al.'' (2005) The t ...
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Pliensbachian
The Pliensbachian is an age of the geologic timescale and stage in the stratigraphic column. It is part of the Early or Lower Jurassic Epoch or Series and spans the time between 190.8 ± 1.5 Ma and 182.7 ± 1.5 Ma (million years ago). The Pliensbachian is preceded by the Sinemurian and followed by the Toarcian. The Pliensbachian ended with the extinction event called the Toarcian turnover. During the Pliensbachian, the middle part of the Lias was deposited in Europe. The Pliensbachian is roughly coeval with the Charmouthian regional stage of North America. Stratigraphic definitions The Pliensbachian takes its name from the hamlet of Pliensbach in the community of Zell unter Aichelberg in the Swabian Alb, some 30 km east of Stuttgart in Germany. The name was introduced into scientific literature by German palaeontologist Albert Oppel in 1858. The base of the Pliensbachian is at the first appearances of the ammonite species '' Bifericeras donovani'' and genera ''Apoderocer ...
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Serbia And Montenegro
Serbia and Montenegro ( sr, Cрбија и Црна Гора, translit=Srbija i Crna Gora) was a country in Southeast Europe located in the Balkans that existed from 1992 to 2006, following the breakup of the Socialist Federal Republic of Yugoslavia (SFR Yugoslavia) which bordered Hungary to the north, Romania to the northeast, Bulgaria to the southeast, Macedonia to the south, Croatia and Bosnia and Herzegovina to the west, and Albania to the southwest. The state was founded on 27 April 1992 as the Federal Republic of Yugoslavia, known as FR Yugoslavia or simply Yugoslavia which comprised the Republic of Serbia and the Republic of Montenegro. In February 2003, FR Yugoslavia was transformed from a federal republic to a political union until Montenegro seceded from the union in June 2006, leading to the full independence of both Serbia and Montenegro. Its aspirations to be the sole legal successor state to SFR Yugoslavia were not recognized by the United Nations, following t ...
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Budva
Budva ( cnr, Будва, or ) is a Montenegrin town on the Adriatic Sea. It has 19,218 inhabitants, and it is the centre of Budva Municipality. The coastal area around Budva, called the Budva riviera, is the center of Montenegrin tourism, known for its well-preserved medieval walled city, sandy beaches and diverse nightlife. Budva is 2,500 years old, which makes it one of the oldest settlements on the Adriatic coast. Etymology In Montenegrin the town is known as Будва or ''Budva''; in Italian and Latin as ''Budua''; in Albanian as ''Budua'' and in ancient Greek as Bouthoe (Βουθόη). According to Ernst Eichler and others, Budva, Butua and Βουθόη (Bouthóē) is ultimately derived from Proto-Albanian ''*bukta-. ( Modern Albanian butë.)'' (meaning "soft, mild") The etymology may refer to the climate of the place. History Extensive archaeological evidence places Budva among the oldest urban settlements of the Adriatic coast. Substantial documentary ev ...
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Wengener Schichten Formation
The Wengener Schichten Formation is a geologic formation in Montenegro. It preserves bivalve and brittle star fossils dating back to the Ladinian of the Triassic period.Wengener Schichten Formation
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Fossil content

The following fossils were reported from the formation:Bachmayer & Kollmann, 1968 * s **

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Franz Toula
Franz Toula (20 December 1845 in Vienna – 3 January 1920 in Vienna) was an Austrian geologist, mineralogist and paleontologist. Beginning in 1863 he studied at the Vienna University of Technology, Polytechnic Institute in Vienna (later on, known as ''Technische Hochschule Wien''), where he was a pupil and assistant to Ferdinand von Hochstetter. Later on, he worked for several years as a gymnasium instructor in Vienna. In 1880 he became an associate professor at the ''Technische Hochschule'', where from 1884 to 1917 he served as a full professor of mineralogy and geology.Toula, Franz Edler von (1845–1920), Geologe, Paläontologe und Mineraloge
Österreichisches Biographisches Lexikon und biographische Dokumentation
In 1893/94 he served as rector (academia), ...
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Psiloceras
''Psiloceras'' is an extinct genus of ammonite. ''Psiloceras'' is among the earliest known Jurassic ammonites, and the appearance of the earliest ''Psiloceras'' species form the definition for the base of the Jurassic. Unlike most earlier ammonites, which had complex shell shapes and ornamentation, ''Psiloceras'' had a smooth shell. Taxonomy Almost all ammonites, with the sole exemption of a few members of the family Psiloceratidae, including ''Psiloceras'' were wiped out at the Triassic–Jurassic extinction event (201.3 million years ago). Most authors assume that ''Psiloceras'' descended from the Phyllocerataceae. ''P. spelae'' is probably the earliest species of ''Psiloceras''. Biostratigraphic significance The International Commission on Stratigraphy (ICS) has assigned the First Appearance Datum of the ''Psiloceras spela''-group as the defining biological marker for the start of the Hettangian, 201.3 ± 0.2 million years ago, the earliest stage of the Jurassic, with the G ...
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Hettangian
The Hettangian is the earliest age and lowest stage of the Jurassic The Jurassic ( ) is a Geological period, geologic period and System (stratigraphy), stratigraphic system that spanned from the end of the Triassic Period million years ago (Mya) to the beginning of the Cretaceous Period, approximately Mya. The J ... Geological time scale, Period of the geologic timescale. It spans the time between 201.3 ± 0.2 annum, Ma and 199.3 ± 0.3 Ma (million years ago). The Hettangian follows the Rhaetian (part of the Triassic Period) and is followed by the Sinemurian. In European stratigraphy the Hettangian is a part of the time span in which the Lias Group, Lias was deposited. An example is the British Blue Lias, which has an upper Rhaetian to Sinemurian age. Another example is the lower Lias from the Northern Limestone Alps where well-preserved but very rare ammonites, including Alsatites, have been found. Stratigraphic definitions The Hettangian was introduced in the literature by ...
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Switzerland
). Swiss law does not designate a ''capital'' as such, but the federal parliament and government are installed in Bern, while other federal institutions, such as the federal courts, are in other cities (Bellinzona, Lausanne, Luzern, Neuchâtel, St. Gallen a.o.). , coordinates = , largest_city = Zürich , official_languages = , englishmotto = "One for all, all for one" , religion_year = 2020 , religion_ref = , religion = , demonym = , german: Schweizer/Schweizerin, french: Suisse/Suissesse, it, svizzero/svizzera or , rm, Svizzer/Svizra , government_type = Federalism, Federal assembly-independent Directorial system, directorial republic with elements of a direct democracy , leader_title1 = Federal Council (Switzerland), Federal Council , leader_name1 = , leader_title2 = , leader_name2 = Walter Thurnherr , legislature = Fe ...
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Canton Of Aargau
Aargau, more formally the Canton of Aargau (german: Kanton Aargau; rm, Chantun Argovia; french: Canton d'Argovie; it, Canton Argovia), is one of the 26 cantons forming the Swiss Confederation. It is composed of eleven districts and its capital is Aarau. Aargau is one of the most northerly cantons of Switzerland. It is situated by the lower course of the Aare River, which is why the canton is called ''Aar- gau'' (meaning "Aare province"). It is one of the most densely populated regions of Switzerland. History Early history The area of Aargau and the surrounding areas were controlled by the Helvetians, a member of the Celts, as far back as 200 BC. It was eventually occupied by the Romans and then by the 6th century, the Franks. The Romans built a major settlement called Vindonissa, near the present location of Brugg. Medieval Aargau The reconstructed Old High German name of Aargau is ''Argowe'', first unambiguously attested (in the spelling ''Argue'') in 795. The term ...
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Mülligen
Mülligen is a municipality in the district of Brugg in canton of Aargau in Switzerland. History The earliest known settlement was in the Early Middle Ages, though the only traces of the settlement are two groups of graves. Mülligen is first mentioned in the 12th Century as ''Mülinon''. Until the 17th Century it was known as ''Mülinen''. The rights to high and low justice were held by the Habsburgs through Königsfelden Abbey. After the secularization of the Abbey, those rights were held by Bern. Originally the major economic activity in Mülligen was agriculture and viticulture. After 1730, small scale textile production provided another source of income. Then in 1849 a Gypsum processing plant opened in the village. Starting about 1830, the residents of Mülligen worked in the spinning mill in Windisch, and the first industrial plant in Mülligen opened in 1909. In 1924, a gravel plant opened in the village, and it was expanded in 1955. In 1964 the bovine artific ...
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Staffelegg Formation
The Staffelegg Formation (German: Staffelegg-Formation, French: Formation de la Staffelegg, Italian: Formazione della Staffelegg) is a formation of Early Jurassic age ( late Hettangian to early Toarcian stages) in the Canton of Aargau of northern Switzerland. The siltstones, marls, limestones and intermittent sandstones of the formation were deposited on the Northern Tethyan Carbonate Platform (NTCP). The Staffelegg Formation has provided fossils of the ichthyosaur '' Eurhinosaurus longirostris'' and the ammonite '' Catacoeloceras raquinianum''. Description The formation is found in the northern canton of Aargau of Switzerland and has a thickness of , and in the Mont Terri area approximately . The Staffelegg Formation is named after the Staffelegg Pass, overlies the Keuper Group and is overlain by the Opalinus Clay. The formation comprises siltstones and marls. Additionally, limestones and subordinately also sandstones may occur especially in the Sinemurian part. In the Folde ...
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