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The Neogene is a geologic period and system that spans 20.45 million years from the end of the Paleogene Period 23.03 million years ago (Mya) to the beginning of the present Quaternary Period 2.58 million years ago. The Neogene is sub-divided into two epochs, the earlier Miocene and the later Pliocene. Some geologists assert that the Neogene cannot be clearly delineated from the modern geological period, the Quaternary. The term "Neogene" was coined in 1853 by the Austrian palaeontologist Moritz Hörnes (1815–1868). The earlier term Tertiary Period was used to define the span of time now covered by Paleogene and Neogene and, despite no longer being recognized as a formal stratigraphic term, "Tertiary" still sometimes remains in informal use.
The San Diego Formation is a geologic formation in southwestern San Diego County in southern California, and northwestern Baja California (México).
Ontocetus is an extinct genus of walrus, an aquatic carnivoran of the family Odobenidae, endemic to coastal regions of the southern North Sea and the southeastern coastal regions of the U.S. during the Miocene-Pleistocene. It lived from 13.6 mya—300,000 years ago, existing for approximately 13.3 million years.
Australodelphis mirus is an extinct Pliocene dolphin. A. mirus is known from fossils found in the Sørsdal Formation, Mule Peninsula, Vestfold Hills, East Antarctica. The genus has been described as an example of convergent evolution with beaked whales.
The Rupel Group is a stratigraphic group of rock strata in the subsurface of Belgium. It is subdivided into three formations that are all marine deposits of Oligocene age.
The Aalter Formation is a geologic formation in the subsurface of northwest Belgium. The formation consists of marine clay and sand, deposited in the shallow sea that covered northern and central Belgium in the Eocene epoch.
The Torreya Formation is a Miocene geologic formation with an outcrop in North Florida. It is within the Hawthorn Group.
The Arcadia Formation and its sub-unit, the Tampa Member, are Late Oligocene geologic formations in North Florida, United States. It is part of the Hawthorn Group.
The Chipola Formation is a Late Oligocene to Early Miocene geologic formation in the Florida Panhandle and member of the Alum Bluff Group.
The Peace River Formation is a Late Oligocene to Early Miocene geologic formation in the west-central Florida peninsula.
Diunatans is an extinct genus of rorqual. It lived in the North Sea during the Early Pliocene. Two specimens have been found from the Netherlands. They were collected from the Kattendijk Formation in the province of Zeeland, which is Zanclean in age. Diunatans is considered to be a stem balaenopterid because it falls outside the Balaenoptera+Megaptera clade, which includes all living rorquals.
The Murray Basin is a Cenozoic sedimentary basin in south eastern Australia. The basin is only shallow, but extends into New South Wales, Victoria and South Australia. It takes its name from the Murray River which traverses the Basin from east to west.
The Norwich Crag Formation is a stratigraphic unit of the British Pleistocene Epoch. It is the second youngest unit of the Crag Group, a sequence of four geological formations spanning the Pliocene to Lower Pleistocene transition in East Anglia. It was deposited between approximately 2.4 and 1.8 million years ago, during the Gelasian Stage.
The Alum Bluff Group is a geologic group in the states of Georgia, Florida, and Alabama. It preserves fossils dating back to the Neogene period.
The Kern River Beds Formation is a Neogene Period geologic formation in the southeastern San Joaquin Valley, within Kern County, California.
The Coralline Crag Formation is a geological formation in England. It is a series of marine deposits found near the North Sea coast of Suffolk and characterised by bryozoan and mollusc debris. The deposit, whose onshore occurrence is mainly restricted to the area around Aldeburgh and Orford, is a series of bioclastic calcarenites and silty sands with shell debris, deposited during a short-lived warm period at the start of the Pliocene Epoch of the Neogene Period. Small areas of the rock formation are found in locations such as Boyton and Tattingstone to the south of Orford as well as offshore at Sizewell.
Gryphoca is an extinct genus of earless seals from Neogene marine deposits in the North Sea basin.
The geology of Saudi Arabia includes Precambrian igneous and metamorphic basement rocks, exposed across much of the country. Thick sedimentary sequences from the Phanerozoic dominate much of the country's surface and host oil.
Conus adversarius is an extinct species of venomous sea snail in the genus Conus. It lived from the Early Pliocene until the Early Pleistocene. It is the only species in the genus that is entirely sinistral.
Pliodelphis is a genus of small delphinid cetaceans that lived in Belgium during the Early Miocene epoch, about 5 million to 4.4 million years ago. The genus contains the type species Pliodelphis doelensis, named and described in 2021 based on a partial skull recovered from the littoral Kattendijk Formation.
References
- 1 2 Schittekat, J. (2001). "Engineering geology of the Boom clay in the Antwerp area". In Holeyman, Alain E. (ed.). Screw Piles — Installation and Design in Stiff Clay. Taylor & Francis. ISBN 9789058091925.
- ↑ van der Sijp, Jaap Willem Charles Marie, ed. (1973). New aspects of mineral and water resources in The Netherlands. The Hague: M. Nijhoff. OCLC 2367071.
- ↑ Deckers, J.; Louwye, S. (2020). "The architecture of the Kattendijk Formation and the implications on the early Pliocene depositional evolution of the southern margin of the North Sea Basin". Geologica Belgica. 23 (3–4): 323−331. doi: 10.20341/gb.2020.017 . hdl: 1854/LU-8693840 .
- ↑ Coetsiers, M.; Walraevens, K. (2009). "The Neogene Aquifer, Flanders, Belgium". In Edmunds, W. Mike; Shand, Paul (eds.). Natural groundwater quality. John Wiley & Sons. ISBN 9781444300352.
- ↑ Martin, J.W.R.; Walker, C.A.; Bonser, R.; Dyke, Gareth J. (2000). "A new species of large auk from the Pliocene of Belgium". Oryctos. 3: 53–60. Retrieved 4 November 2012.
- ↑ Belluzzo, A.; Lambert, O. (2021). "A new delphinid from the lower Pliocene of the North Sea and the early radiations of true dolphins". Fossil Record. 24 (1): 72−92. doi: 10.5194/fr-24-77-2021 .
