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Conodonts are an extinct group of agnathan (jawless) vertebrates resembling eels, classified in the class Conodonta. For many years, they were known only from their tooth-like oral elements, which are usually found in isolation and are now called conodont elements. Knowledge about soft tissues remains limited. They existed in the world's oceans for over 300 million years, from the Cambrian to the beginning of the Jurassic. Conodont elements are widely used as index fossils, fossils used to define and identify geological periods. The animals are also called Conodontophora to avoid ambiguity.
The Late Triassic is the third and final epoch of the Triassic Period in the geologic time scale, spanning the time between 237 Ma and 201.4 Ma. It is preceded by the Middle Triassic Epoch and followed by the Early Jurassic Epoch. The corresponding series of rock beds is known as the Upper Triassic. The Late Triassic is divided into the Carnian, Norian and Rhaetian ages.
Liliensternus is an extinct genus of basal neotheropod dinosaur that lived approximately 210 million years ago during the latter part of the Triassic Period in what is now Germany. Liliensternus was a moderate-sized, bipedal, ground-dwelling carnivore, that could grow up to 5.15 m (16.9 ft) long. It is the best represented Triassic theropod from Europe and one of the largest known.
The Buda Hills are a low mountain range of numerous hills which dot the Buda side of Budapest, capital of Hungary. The most famous ones located within city limits are Gellért Hill, Castle Hill, Rózsadomb, Sváb Hill, János Hill, Széchenyi Hill and Eagle Hill. These hills consist of both nature and residential areas.
Paleontology or palaeontology is the study of prehistoric life forms on Earth through the examination of plant and animal fossils. This includes the study of body fossils, tracks (ichnites), burrows, cast-off parts, fossilised feces (coprolites), palynomorphs and chemical residues. Because humans have encountered fossils for millennia, paleontology has a long history both before and after becoming formalized as a science. This article records significant discoveries and events related to paleontology that occurred or were published in the year 1975.
The Trossingen Formation, formerly the Knollenmergel, is a geological formation in Germany and Switzerland. It dates back to the late Norian-Rhaetian.
The Solling Formation is a geologic formation in Germany. Formerly considered earliest Triassic (Induan), but later dating places the formation from the Olenekian to Anisian of the Triassic period.
Jerzy Dzik is a Polish paleontologist.
Heinz Walter Kozur was a German paleontologist and stratigrapher.
Misikella is an extinct genus of conodonts.
Chirodella is an extinct genus of conodonts in the family Prioniodinidae.
Steve Etches, MBE is an English plumber, fossil collector and preparator in Kimmeridge, on the Isle of Purbeck. From an early age on, Etches began to find, collect and restore the fossils he found on the Jurassic Coast. His collection is now housed in a museum called The Etches Collection which was purpose-built, both to house the collection and to replace the deteriorating local village hall. Etches has won many prizes for his palaeontology and was made a Member of the Order of the British Empire by the Queen in 2014. In 2017, he was also awarded an Honorary Doctorate by the University of Southampton. On 22 April 2019, he appeared on the natural history podcast Trees A Crowd with David Oakes.
The Sachrang Formation or "Posidonienschiefer" Formation is a geological formation of southwestern Germany, northern Switzerland, northwestern Austria, southeast Luxembourg and the Netherlands, that spans about 3 million years during the Early Jurassic period. It is known for its detailed fossils, especially sea fauna, listed below. Composed mostly by black shale, the formation is a Lagerstätte, where fossils show exceptional preservation, with a thickness that varies from about 1 m to about 40 m on the Rhine level, being on the main quarry at Holzmaden between 5 and 14 m. Some of the preserved material has been transformed into fossil hydrocarbon Jet, specially wood remains, used for jewelry. The exceptional preservation seen on the Posidonia Shale has been studied since the late 1800s, finding that a cocktail of chemical and environmental factors let to such an impressive conservation of the marine fauna. The most common theory is the changes in the oxygen level, where the different anoxic events of the Toarcian left oxygen-depleted bottom waters, with the biota dying and falling to the bottom without any predator able to eat the dead bodies.
The Ciechocinek Formation is a Jurassic geologic formation which extends across the Baltic coast from Grimmen, Germany, to Nida, Lithuania, with its major sequence in Poland and boreholes in Kaliningrad. Dinosaur species uncovered here, including Emausaurus and other unclassified genus.
The Besano Formation is a geological formation in the southern Alps of northwestern Italy and southern Switzerland. This formation, a short but fossiliferous succession of dolomite and black shale, is famous for its preservation of Middle Triassic (Anisian–Ladinian) marine life including fish and aquatic reptiles. It is exposed in the vicinity of Monte San Giorgio and is among the formations responsible for the area being designated as a UNESCO World Heritage Site. In Switzerland, it is also known as the Grenzbitumenzone. The Anisian-Ladinian boundary lies in the upper part of the Besano Formation.
Oncodella is an extinct genus of Late Triassic conodont. The genus was given the type species Oncodella idiodentica by Mosher (1968), on the basis of fossils from the Late Triassic of Austria. However, Mosher (1969) later revised the species name to Oncodella paucidentata, since identical fossils from the same area were previously given the name Hindeodella paucidentata by Mostler (1967).
Rhomphaiodon is an extinct genus of prehistoric sharks in the order Synechodontiformes that has been found in Late Triassic and Early Jurassic deposits located in Europe. The type species R. minor was originally named as a species of Hybodus in 1837 by Louis Agassiz. A second species, R. nicolensis, was added when the genus was named in 1993.
Parvigondolella is an extinct genus of Late Triassic conodonts. The most common species in the genus, Parvigondolella andrusovi, is used as an index fossil for part of the Sevatian substage of the Norian stage. Kozur & Mock, 1991 named two additional species, P. rhaetica and P. vrielyncki. Moix et al. (2007) later argued that "Misikella" rhaetica was a species of Parvigondolella. In order to prevent having two different species with the same name within the genus, they renamed Kozur & Mock (1991)'s P. rhaetica to P. prorhaetica. However, this would be unnecessary if "Misikella" rhaetica was not related to Parvigondolella. Parvigondolella is typically considered a direct descendant of Mockina/Epigondolella bidentata.
Zieglericonus is an extinct genus of Late Triassic (Rhaetian-age) conodonts, with a simple conical form.
Amphissites is an extinct genus of ostracod belonging to the suborder Beyrichicopina and family Amphissitinae. Species belonging to the genus lived from the Devonian to the Permian in Europe, North America, Australia, and east Asia. The genus were likely deposit-feeders, and may have survived briefly into the Triassic.
References
- 1 2 3 Kozur, Heinz; Mock, Rudolf (1991). "New Middle Carnian and Rhaetian Conodonts from Hungary and the Alps. Stratigraphic Importance and Tectonic Implications for the Buda Mountains and Adjacent Areas" (PDF). Jahrbuch der Geologischen Bundesanstalt. 134 (2): 271–297.
- ↑ Palfy, J.; et al. (2007). "Triassic/Jurassic boundary events inferred from integrated stratigraphy of the Csővár section, Hungary". Palaeogeography, Palaeoclimatology, Palaeoecology . 244 (1–4): 11–33. Bibcode:2007PPP...244...11P. doi:10.1016/j.palaeo.2006.06.021.
- 1 2 3 4 5 6 7 Kozur, Heinz; Mostler, Helfried (1970). "Neue Conodonten aus der Trias" (PDF). Berichte des Naturwissenschaftlich-medizinischen Vereins in Innsbruck. 58: 429–464.
- 1 2 Götz, Annette (1995). "Neue Conodonten aus dem Unteren Muschelkalk (Trias, Anis) des germanischen Beckens" (PDF). Geologisch-Paläontologische Mitteilungen Innsbruck. 20: 51–59.
- 1 2 Tatge, Von Ursula (1956). "Conodonten aus dem germanischen Muschelkalk" (PDF). Paläontologische Zeitschrift . 30 (1/2): 108–127. doi:10.1007/BF03041876. S2CID 129693776.
- ↑ Thang, Bui Duc (1989). "Lower Triassic conodonts from North Vietnam" (PDF). Acta Palaeontologica Polonica . 34 (4): 391–416.
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