|
Kaupitherium
''Kaupitherium'' is an extinct dugongid sea cow that lived during the Oligocene. Fossils of the genus have been found in the Alzey Formation of Germany. Inside its flippers were finger bones that did not stick out. ''Kaupitherium'' also had the residues of back legs, which did not show externally. However, it did have a basic femur, joined to a reduced pelvis. ''Kaupitherium'' also had elongated ribs, presumably to increase lung capacity to provide fine control of buoyancy. Taxonomy "Halitheriine" dugongid remains from Oligocene deposits in Europe were previously referred to '' Halitherium schinzii'' by many authors. However, Voss (2013, 2014) dismissed ''Halitherium'' as a ''nomen dubium'' by virtue of being based on non-diagnostic remains. Voss based the opinion on the type species, ''H. schinzii'', being ''nomen dubium'', with its holotype fossil, an isolated molar, having no diagnostic value.Voss, Manja. "On the invalidity of Halitherium schinzii Kaup, 1838 (Mammalia, Sire ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Metaxytherium
''Metaxytherium'' is an extinct genus of dugong that lived from the Oligocene until the end of the Pliocene. Fossil remains have been found in Africa, Europe, North America and South America. Generally marine seagrass specialists, they inhabited the warm and shallow waters of the Paratethys, Mediterranean, Caribbean Sea and Pacific coastline. American species of ''Metaxytherium'' are considered to be ancestral to the North Pacific family Hydrodamalinae, which includes the giant Steller's sea cow. Discovery and naming The first remains of ''Metaxytherium'' were described in 1822 by Anselme-Gaëtan Demarest as a species of Hippopotamus, Hippo, ''H. medius'' before the genus name ''Metaxytherium'' was coined in 1840 by De Christol. Although the type species was initially designated to be ''M. cuvieri'', later publications argued that the two species are synonymous and ''M. medium'' thus holds precedence. The grammatical changes of the species name were made to match the rules of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Halitherium
''Halitherium'' is an extinct dugongid sea cow that arose in the late Eocene, then became extinct during the early Oligocene. Its fossils are common in European shales. Inside its flippers were finger bones that did not stick out. ''Halitherium'' also had the remnants of back legs, which did not show externally. However, it did have a basic femur, joined to a reduced pelvis. ''Halitherium'' also had elongated ribs, presumably to increase lung capacity to provide fine control of buoyancy. A 2014 review presented the opinion that the genus is dubious. Classification ''Halitherium'' is the type genus of the subfamily Halitheriinae, which includes the well-known genera '' Eosiren'' and '' Eotheroides'' and lived from the Eocene to the Oligocene. Taxonomy The genus ''Halitherium'' has had a confusing nomenclatural history. It was originally coined by Johann Jakob Kaup on the basis of a premolar from the early Oligocene (Rupelian) of southern Germany, but Kaup himself mistakenly ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dugongidae
Dugongidae is a Family (biology), family in the Order (biology), order of Sirenia. The family has one surviving species, the dugong (''Dugong dugon''), one recently Extinction, extinct species, Steller's sea cow (''Hydrodamalis gigas''), and a number of extinct Genus, genera known from fossil records. Dugongidae's body weight ranges from 217 to 307 kg for juveniles, 334 to 424 kg for subadults, and 435 to 568.5 kg for adults. Oral temperatures for individual dugongs is determined from 24° to 34.2 °C. Heart rate readings are from 40 to 96 bpm and vary between individual dugongs. Respiration rate during the out-of-water phase is from 1 to 33. Taxonomy * Family Dugongidae ** Genus extinction, †''Anisosiren'' ** Genus †''Caribosiren'' ** Genus †''Indosiren'' ** Genus †''Lentiarenium'' ** Genus †''Kaupitherium'' ** Genus †''Paralitherium'' ** Genus †''Priscosiren'' ** Genus †''Prohalicore'' ** Genus †''Sirenavus'' ** Subfamily †Halitheriinae ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Early Oligocene
The Rupelian is, in the geologic timescale, the older of two age (geology), ages or the lower of two stage (stratigraphy), stages of the Oligocene epoch (geology), Epoch/series (stratigraphy), Series. It spans the time between . It is preceded by the Priabonian Stage (part of the Eocene) and is followed by the Chattian Stage. Name The stage is named after the small river Rupel in Belgium, a tributary to the Scheldt. The Belgian Rupel Group derives its name from the same source. The name Rupelian was introduced in scientific literature by Belgian geologist André Hubert Dumont in 1850. The separation between the group (stratigraphy), group and the stage was made in the second half of the 20th century, when stratigraphers saw the need to distinguish between lithostratigraphy, lithostratigraphic and chronostratigraphy, chronostratigraphic names. Stratigraphic definition The base of the Rupelian Stage (which is also the base of the Oligocene Series) is at the extinction of the foram ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fossils Of Germany
A fossil (from Classical Latin , ) is any preserved remains, impression, or trace of any once-living thing from a past geological age. Examples include bones, seashell, shells, exoskeletons, stone imprints of animals or microbes, objects preserved in #Resin, amber, hair, petrified wood and DNA remnants. The totality of fossils is known as the ''fossil record''. Though the fossil record is incomplete, numerous studies have demonstrated that there is enough information available to give a good understanding of the pattern of diversification of life on Earth. In addition, the record can predict and fill gaps such as the discovery of ''Tiktaalik'' in the arctic of Canada. Paleontology includes the study of fossils: their age, method of formation, and evolutionary significance. Specimens are sometimes considered to be fossils if they are over 10,000 years old. The oldest fossils are around 3.48 billion years to 4.1 billion years old. Early edition, published online bef ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oligocene Germany
The Oligocene ( ) is a geologic epoch of the Paleogene Period that extends from about 33.9 million to 23 million years before the present ( to ). As with other older geologic periods, the rock beds that define the epoch are well identified but the exact dates of the start and end of the epoch are slightly uncertain. The name Oligocene was coined in 1854 by the German paleontologist Heinrich Ernst Beyrich from his studies of marine beds in Belgium and Germany. The name comes from Ancient Greek (''olígos'') 'few' and (''kainós'') 'new', and refers to the sparsity of extant forms of molluscs. The Oligocene is preceded by the Eocene Epoch and is followed by the Miocene Epoch. The Oligocene is the third and final epoch of the Paleogene Period. The Oligocene is often considered an important time of transition, a link between the archaic world of the tropical Eocene and the more modern ecosystems of the Miocene. Major changes during the Oligocene included a global expansion of grass ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oligocene Mammals Of Europe
The Oligocene ( ) is a geologic epoch of the Paleogene Period that extends from about 33.9 million to 23 million years before the present ( to ). As with other older geologic periods, the rock beds that define the epoch are well identified but the exact dates of the start and end of the epoch are slightly uncertain. The name Oligocene was coined in 1854 by the German paleontologist Heinrich Ernst Beyrich from his studies of marine beds in Belgium and Germany. The name comes from Ancient Greek (''olígos'') 'few' and (''kainós'') 'new', and refers to the sparsity of extant forms of molluscs. The Oligocene is preceded by the Eocene Epoch and is followed by the Miocene Epoch. The Oligocene is the third and final epoch of the Paleogene Period. The Oligocene is often considered an important time of transition, a link between the archaic world of the tropical Eocene and the more modern ecosystems of the Miocene. Major changes during the Oligocene included a global expansion of gra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rupelian Life
The Rupelian is, in the geologic timescale, the older of two ages or the lower of two stages of the Oligocene Epoch/Series. It spans the time between . It is preceded by the Priabonian Stage (part of the Eocene) and is followed by the Chattian Stage. Name The stage is named after the small river Rupel in Belgium, a tributary to the Scheldt. The Belgian Rupel Group derives its name from the same source. The name Rupelian was introduced in scientific literature by Belgian geologist André Hubert Dumont in 1850. The separation between the group and the stage was made in the second half of the 20th century, when stratigraphers saw the need to distinguish between lithostratigraphic and chronostratigraphic names. Stratigraphic definition The base of the Rupelian Stage (which is also the base of the Oligocene Series) is at the extinction of the foraminiferan genus ''Hantkenina''. An official GSSP for the base of the Rupelian has been assigned in 1992 (Massignano, Italy). The transit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oligocene Sirenians
The Oligocene ( ) is a geologic epoch of the Paleogene Period that extends from about 33.9 million to 23 million years before the present ( to ). As with other older geologic periods, the rock beds that define the epoch are well identified but the exact dates of the start and end of the epoch are slightly uncertain. The name Oligocene was coined in 1854 by the German paleontologist Heinrich Ernst Beyrich from his studies of marine beds in Belgium and Germany. The name comes from Ancient Greek (''olígos'') 'few' and (''kainós'') 'new', and refers to the sparsity of extant forms of molluscs. The Oligocene is preceded by the Eocene Epoch and is followed by the Miocene Epoch. The Oligocene is the third and final epoch of the Paleogene Period. The Oligocene is often considered an important time of transition, a link between the archaic world of the tropical Eocene and the more modern ecosystems of the Miocene. Major changes during the Oligocene included a global expansion of gras ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kit Kovacs
Kit Kovacs is a marine mammal researcher, best known for her work on biology, conservation and management of whales and seals. She is based at the Norwegian Polar Institute (NPI), Tromsø and is an adjunct professor of biology, marine biology, at the University Centre in Svalbard (UNIS). Early life and education Kovacs was born in Germany and has Canadian citizenship. She received her H.B.Sc. (Biology) in 1979 from York University, Toronto, Canada. In 1982, she was awarded a Master of Science degree in Biology by the Lakehead University at Thunder Bay. Her doctorate (Ph.D) in Zoology was awarded by the University of Guelph (Guelph) in 1986. Research career Kovacs' teaching career, spanning over 12 years, started as an assistant professor at the University of Waterloo. She is now the senior research scientist for the Biodiversity Research Programme at the Centre for Ice Climate and Ecosystems (ICE) at the Norwegian Polar Institute, as well as a professor of biology at University ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Annalisa Berta
Annalisa Berta (born 23 July 1952) is an American paleontologist and professor emerita in the Department of Biology at San Diego State University. The focus of her research is the evolution and fossil history of whales and other marine mammals, and among her contributions is the description of the early pinniped ''Enaliarctos''. Berta received her Ph.D. from the Department of Paleontology at the University of California, Berkeley in 1979, after which she was a postdoctoral researcher at University of Florida before starting as a faculty member at San Diego State University in 1982. Berta served as president of the Society of Vertebrate Paleontology in 2004–2006 and she was elected a Fellow of the American Association for the Advancement of Science (AAAS) in 2015 and of the Paleontological Society The Paleontological Society, formerly the Paleontological Society of America, is an international organisation devoted to the promotion of paleontology. The Society was founded in 1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
