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Xenorophus
''Xenorophus'' is a genus of primitive odontocete from late Oligocene ( Chattian) marine deposits in South Carolina belonging to Xenorophidae. Classification ''Xenorophus'' was originally described on the basis of a skull from the Chandler Bridge Formation of South Carolina in the collections of the USNM. Later authors, but also Remington Kellogg who described the genus, classified it in the family Agorophiidae ''Agorophius'' is an extinct genus of toothed whale that lived during the Oligocene period, approximately , in the waters off what is now South Carolina. Taxonomy The holotype of ''Agorophius pygmaeus'', MCZ 8761, was first mentioned in an 1848 ..., which eventually became a repository for primitive odontocetes. Whitmore and Sanders (1977) and Fordyce (1981), however, preferred to treat ''Xenorophus'' as Odontoceti ''incertae sedis''. A cladistic analysis by Mark Uhen published in 2008 recognized ''Xenorophus'' as belonging with '' Archaeodelphis'' and '' Albertodelp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Xenorophidae
Xenorophidae is an extinct family of odontocetes currently known from the Oligocene of the southeastern US. Known genera of xenorophids include '' Albertocetus'', '' Archaeodelphis'', ''Xenorophus ''Xenorophus'' is a genus of primitive odontocete from late Oligocene ( Chattian) marine deposits in South Carolina belonging to Xenorophidae. Classification ''Xenorophus'' was originally described on the basis of a skull from the Chandler Bri ...'', '' Cotylocara'', '' Echovenator'', and '' Inermorostrum''.. References Prehistoric toothed whales Prehistoric mammal families Oligocene cetaceans {{paleo-whale-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Archaeodelphis
''Archaeodelphis'' is an extinct genus of primitive odontocete cetacean from late Oligocene ( Chattian) marine deposits in South Carolina, and belonging to the family Xenorophidae Xenorophidae is an extinct family of odontocetes currently known from the Oligocene of the southeastern US. Known genera of xenorophids include '' Albertocetus'', '' Archaeodelphis'', ''Xenorophus ''Xenorophus'' is a genus of primitive odonto .... Description ''Archaeodelphis'' has polydont teeth, like other xenorophids.G. M. Allen. 1921. A new fossil cetacean. Bulletin of the Museum of Comparative Zoology 65(1):1-14. References Oligocene cetaceans Fossil taxa described in 1921 {{paleo-whale-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Agorophius
''Agorophius'' is an extinct genus of toothed whale that lived during the Oligocene period, approximately , in the waters off what is now South Carolina. Taxonomy The holotype of ''Agorophius pygmaeus'', MCZ 8761, was first mentioned in an 1848 report on the geology of South Carolina by Michael Tuomey. It was eventually described as ''Zeuglodon pygmaeus'' by Johannes Peter Müller in 1849. Louis Agassiz coined the name ''Phocodon holmesii'' for the same specimen, classifying it as an odontocete. Later authors considered ''Zeuglodon pygmaeus'' a species of either ''Dorudon'' or ''Squalodon'', and in 1895 Edward Drinker Cope eventually recognized it as being a distinct genus, which he named ''Agorophius''. Although the skull is lost and the tooth is the only extant part of MCZ 8761, Fordyce (1981) was able to diagnose ''Agorophius'' based on existing descriptions of the skull by Muller, Cope, and Agassiz.R. E. Fordyce. 1981. Systematics of the odontocete whale Agorophius pygmaeus a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Animal Echolocation
Echolocation, also called bio sonar, is a biological sonar used by several animal species. Echolocating animals emit calls out to the environment and listen to the echoes of those calls that return from various objects near them. They use these echoes to locate and identify the objects. Echolocation is used for navigation, foraging, and hunting in various environments. Echolocating animals include some mammals (most notably Laurasiatheria) and a few birds, especially some bat species and odontocetes (toothed whales and dolphins), but also in simpler forms in other groups such as shrews, and two cave-dwelling bird groups, the so-called cave swiftlets in the genus ''Aerodramus'' (formerly ''Collocalia'') and the unrelated oilbird ''Steatornis caripensis''. Early research The term ''echolocation'' was coined in 1938 by the American zoologist Donald Griffin, who, with Robert Galambos, first demonstrated the phenomenon in bats. As Griffin described in his book, the 18th century I ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oligocene
The Oligocene ( ) is a geologic epoch of the Paleogene Period and 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 the 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 o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species
In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. Other ways of defining species include their karyotype, DNA sequence, morphology, behaviour or ecological niche. In addition, paleontologists use the concept of the chronospecies since fossil reproduction cannot be examined. The most recent rigorous estimate for the total number of species of eukaryotes is between 8 and 8.7 million. However, only about 14% of these had been described by 2011. All species (except viruses) are given a two-part name, a "binomial". The first part of a binomial is the genus to which the species belongs. The second part is called the specific name or the specific epithet (in botanical nomenclature, also sometimes i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chattian
The Chattian is, in the geologic timescale, the younger of two ages or upper of two stages of the Oligocene Epoch/Series. It spans the time between . The Chattian is preceded by the Rupelian and is followed by the Aquitanian (the lowest stage of the Miocene). Stratigraphic definition The Chattian was introduced by Austrian palaeontologist Theodor Fuchs in 1894. Fuchs named the stage after the Chatti, a Germanic tribe.Berry, Edward W"The Mayence Basin, a Chapter of Geologic History" ''The Scientific Monthly'', Vol. 16, No. 2, February 1923. pp. 114. Retrieved March 18, 2020. The original type locality was near the German city of Kassel. The base of the Chattian is at the extinction of the foram genus ''Chiloguembelina'' (which is also the base of foram biozone P21b). An official GSSP for the Chattian Stage was ratified in October of 2016. The top of the Chattian Stage (which is the base of the Aquitanian Stage, Miocene Series and Neogene System) is at the first appearance o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chandler Bridge Formation
The Chandler Bridge Formation is a geologic formation in South Carolina. It preserves fossils dating back to the Chattian (Late Oligocene) of the Paleogene period, corresponding to the Arikareean in the NALMA classification.Chandler Bridge Formation at .org The formation overlies the and is overlain by the Edisto Formation. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Remington Kellogg
Arthur Remington Kellogg (5 October 1892 – 8 May 1969) was an American naturalist and a director of the United States National Museum. His work focused on marine mammals. Early life and career Kellogg was born in Davenport, Iowa, and quickly dropped the name "Arthur". From a young age he devoted his free time to the study of wildlife. He built up his own small collection of mounted birds and mammals and by the time he came to choose a university he had determined he would become a naturalist. Choosing the University of Kansas as it offered courses in his chosen field, he first studied entomology, later switching to the study of mammals. From 1913 to 1916 he worked under Charles D. Bunker, the curator of birds and mammals at the university's Museum of Natural History. He published his first paper as a result of his work with Bunker. Kellogg graduated in 1915 and received his M.A. the following year. After graduating, he immediately began work with the United States Bureau ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Simocetus
''Simocetus'' (from ''simus'', "pug-nosed", and ''cetus'', "whale") is an extinct genus of toothed whale that lived during the Oligocene period, approximately , making it the oldest named toothed whale, although older unnamed toothed whales exist. ''Simocetus'' is known from a single fossil, a skull, found in marine siltstone deposits of the Alsea Formation on the banks of Oregon's Yaquina River in 1977 by fossil hunter of the region, Douglas Emlong. It was first named by New Zealand paleontologist Ewan Fordyce Ewan is an anglicisation of the Scottish Gaelic name Eòghann. It is possibly a derivative of the Pictish name, ''Vuen'' (or 'Wen'), "The Warrior" or "born of the mountain". It is most common as a male given name in Scotland and Canada. It is a ... in 2002 and contains a single species, ''S. rayi''. He found its teeth and jaw different from any other known whale's, and thought it might have been a bottom feeder that fed by suction on marine invertebrates. Features ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Echovenator
''Echovenator'' ("echolocation hunter") is a genus of primitive odontocete from late Oligocene (Chattian) marine deposits in South Carolina belonging to Xenorophidae. Description and paleobiology ''Echovenator'' is distinguishable from other xenorophids in having a paranaris fossa Fossa may refer to: Animals * Fossa (animal), the common name of a carnivoran mammal of genus ''Cryptoprocta'' endemic to Madagascar * ''Fossa'', the Latin genus name of the Malagasy civet, a related but smaller mammal endemic to Madagascar Pla ... and fused fronto-nasal and maxillo-premaxillary sutures. The earbone structure shows that this odontocete was clearly capable of echolocation.. References Oligocene cetaceans Fossil taxa described in 2016 {{paleo-whale-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
