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Aglaocetus
''Aglaocetus'' is a genus of extinct baleen whales known from the Miocene of Patagonia, the US Eastern Seaboard, Japan and the Low Countries. It was once considered a member of Cetotheriidae along with many other putative cetotheres, but was recently recognized as representing a distinct family from true Cetotheriidae. Species There are four currently recognized valid species: ''Aglaocetus moreni'', ''A. latifrons'', ''A. burtini'', and ''A. rotundus''. The type species, ''Aglaocetus moreni'', was originally described as a species of ''Cetotherium'', but later recognized as generically distinct from the latter. ''"Aglaocetus" patulus'', described from the Calvert Formation by Remington Kellogg in 1968, was recovered by Bisconti et al. (2013) in a different phylogenetic position than the ''Aglaocetus'' type species. In 2020, ''A. patulus'' was renamed '' Atlanticetus''.Bisconti, M., Damarco, P., Mao, S., Pavia, M. and Carnevale, G. (2020). The earliest baleen whale from the Me ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aglaocetus Moreni Skull
''Aglaocetus'' is a genus of extinct baleen whales known from the Miocene of Patagonia, the US Eastern Seaboard, Japan and the Low Countries. It was once considered a member of Cetotheriidae along with many other putative cetotheres, but was recently recognized as representing a distinct family from true Cetotheriidae. Species There are four currently recognized valid species: ''Aglaocetus moreni'', ''A. latifrons'', ''A. burtini'', and ''A. rotundus''. The type species, ''Aglaocetus moreni'', was originally described as a species of ''Cetotherium'', but later recognized as generically distinct from the latter. ''"Aglaocetus" patulus'', described from the Calvert Formation by Remington Kellogg in 1968, was recovered by Bisconti et al. (2013) in a different phylogenetic position than the ''Aglaocetus'' type species. In 2020, ''A. patulus'' was renamed '' Atlanticetus''.Bisconti, M., Damarco, P., Mao, S., Pavia, M. and Carnevale, G. (2020). The earliest baleen whale from the Me ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atlanticetus
''Atlanticetus'' is a genus of extinct baleen whales known from the Early Miocene of Italy and the US Eastern Seaboard. Species The type species, ''Atlanticetus patulus'' was originally described as ''Aglaocetus patulus'' from the Calvert Formation by Remington Kellogg in 1968.R. Kellogg. 1968. "A sharp-nosed cetothere from the Miocene Calvert". ''Proceedings of the United States National Museum'' 247(7):163-173. However, it was recovered by Bisconti et al. (2013) in a different phylogenetic position than the ''Aglaocetus ''Aglaocetus'' is a genus of extinct baleen whales known from the Miocene of Patagonia, the US Eastern Seaboard, Japan and the Low Countries. It was once considered a member of Cetotheriidae along with many other putative cetotheres, but was rece ...'' type species ''Aglaocetus moreni''.M. Bisconti, O. Lambert, and M. Bosselaers. 2013. "Taxonomic revision of ''Isocetus depauwi'' (Mammalia, Cetacea, Mysticeti) and the phylogenetic relationships of archaic 'ce ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gaimán Formation
The Gaiman Formation ( es, Formación Gaiman), in older literature also referred to as Patagonian Marine Formation ( es, Formación Patagonia Marino, ''Patagoniense''), is a fossiliferous geologic formation of the Peninsula Valdés Basin in the eastern Chubut Province of northwestern Patagonia, eastern Argentina. The thick formation overlies the Sarmiento Formation and is overlain by the Puerto Madryn Formation and comprises grey and white tuffaceous mudstones and sandstones, deposited in a shallow marine environment. The Gaiman Formation has provided fossils of many extinct penguins, among which five species in the genus ''Palaeospheniscus'', as well as whales and dolphins, most notably '' Aondelphis talen'', '' Prosqualodon australis'', '' Idiorophus patagonicus'' and '' Argyrocetus patagonicus'', indeterminate seal and turtle fossils, shark and other fossils. The richness of the formation, and the other formations in the area, such as the underlying Sarmiento Formation, led t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Colhuehuapian
The Colhuehuapian age is a period of geologic time (21.0–17.5 Ma) within the Early Miocene epoch of the Neogene, used more specifically within the SALMA classification in South America. It follows the Deseadan and precedes the Santacrucian age. Etymology The age is named after the Colhué Huapí Member of the Sarmiento Formation in the Golfo San Jorge Basin, Patagonia, Argentina Argentina (), officially the Argentine Republic ( es, link=no, República Argentina), is a country in the southern half of South America. Argentina covers an area of , making it the second-largest country in South America after Brazil, th .... Formations Fossils References Bibliography ;Colhué Huapí Member * * ;Abanico Formation * * * * * * ;Biblián Formation * ;Castillo Formation * * * * * ;Cerro Bandera Formation * * ;Chichinales Formation * * ;Chilcatay Formation * * * * * * * * * * ;Cura-Mallín Group * * * ;Gaiman Formation * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mesocetus
''Mesocetus'' is an extinct genus of baleen whale from the Miocene of Europe (Antwerp, Belgium and Balkans). Description ''Mesocetus'' is similar to other tranatocetids in having rostral bones that override the frontals and contact the parietals, nasals dividing the maxillae on the vertex, a dorsoventrally bent occipital shield with a more horizontal anterior portion and more vertical posterior portion, and a tympanic bulla with short, narrow anterior portion with rounded or squared anterior end and wider and higher posterior portion that is particularly swollen in the posteroventral area. Shared characters with ''Tranatocetus'' include posterior ends of premaxillae fused with the maxillae and divided on the vertex by long, narrow and high (vertical plate-like) nasals and cervical vertebrae with wide transverse foramina, almost as wide as the centra. Species * ''Mesocetus agrami'' Van Beneden, 1886; known from late Miocene (late Serravallian) of the Balkans. * ''Mesocetus aquitan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plesiocetus
''Plesiocetus'' is a genus of extinct balaenopterids found worldwide. It has had a chequered taxonomic history, having served as a wastebasket genus for a handful of mysticete species. Taxonomy The genus ''Plesiocetus'' was originally coined for three mysticete species from Neogene marine deposits in the vicinity of Antwerp, Belgium: ''P. garopii'', ''P. hupschii'', and ''P. burtinii''. The three originally included species of ''Plesiocetus'' went about their separate ways. ''P. garopii'' was designated the type species of the genus, while the other two were referred to ''Cetotherium''.(''P. hupschii'' and ''P. burtinii'' were later assigned to '' Plesiocetopsis'', which was originally erected as a subgenus of ''Cetotherium'') Later, van Beneden noted the similarities of ''Plesiocetus'' with the fin whale, so he renamed ''Plesiocetus garopii'' into ''Balaenoptera musculoides'', which is invalid under current ICZN rules. At the same time, he also erected the new species ''P. br ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Baleen Whales
Baleen whales (systematic name Mysticeti), also known as whalebone whales, are a parvorder of carnivorous marine mammals of the infraorder Cetacea (whales, dolphins and porpoises) which use keratinaceous baleen plates (or "whalebone") in their mouths to sieve planktonic creatures from the water. Mysticeti comprises the families Balaenidae (right and bowhead whales), Balaenopteridae (rorquals and the gray whale), and Cetotheriidae (the pygmy right whale). There are currently 16 species of baleen whales. While cetaceans were historically thought to have descended from mesonychids, molecular evidence instead supports them as a clade of even-toed ungulates (Artiodactyla). Baleen whales split from toothed whales (Odontoceti) around 34 million years ago. Baleen whales range in size from the and pygmy right whale to the and blue whale, the largest known animal to have ever existed. They are sexually dimorphic. Baleen whales can have streamlined or large bodies, depending on ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Miocene Cetaceans
The Miocene ( ) is the first geological epoch of the Neogene Period and extends from about (Ma). The Miocene was named by Scottish geologist Charles Lyell; the name comes from the Greek words (', "less") and (', "new") and means "less recent" because it has 18% fewer modern marine invertebrates than the Pliocene has. The Miocene is preceded by the Oligocene and is followed by the Pliocene. As Earth went from the Oligocene through the Miocene and into the Pliocene, the climate slowly cooled towards a series of ice ages. The Miocene boundaries are not marked by a single distinct global event but consist rather of regionally defined boundaries between the warmer Oligocene and the cooler Pliocene Epoch. During the Early Miocene, the Arabian Peninsula collided with Eurasia, severing the connection between the Mediterranean and Indian Ocean, and allowing a faunal interchange to occur between Eurasia and Africa, including the dispersal of proboscideans into Eurasia. During the late ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prehistoric Cetacean Genera
Prehistory, also known as pre-literary history, is the period of human history between the use of the first stone tools by hominins 3.3 million years ago and the beginning of recorded history with the invention of writing systems. The use of symbols, marks, and images appears very early among humans, but the earliest known writing systems appeared 5000 years ago. It took thousands of years for writing systems to be widely adopted, with writing spreading to almost all cultures by the 19th century. The end of prehistory therefore came at very different times in different places, and the term is less often used in discussing societies where prehistory ended relatively recently. In the early Bronze Age, Sumer in Mesopotamia, the Indus Valley Civilisation, and ancient Egypt were the first civilizations to develop their own scripts and to keep historical records, with their neighbors following. Most other civilizations reached the end of prehistory during the following Iron Age. T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Netherlands
) , anthem = ( en, "William of Nassau") , image_map = , map_caption = , subdivision_type = Sovereign state , subdivision_name = Kingdom of the Netherlands , established_title = Before independence , established_date = Spanish Netherlands , established_title2 = Act of Abjuration , established_date2 = 26 July 1581 , established_title3 = Peace of Münster , established_date3 = 30 January 1648 , established_title4 = Kingdom established , established_date4 = 16 March 1815 , established_title5 = Liberation Day (Netherlands), Liberation Day , established_date5 = 5 May 1945 , established_title6 = Charter for the Kingdom of the Netherlands, Kingdom Charter , established_date6 = 15 December 1954 , established_title7 = Dissolution of the Netherlands Antilles, Caribbean reorganisation , established_date7 = 10 October 2010 , official_languages = Dutch language, Dutch , languages_type = Regional languages , languages_sub = yes , languages = , languages2_type = Reco ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eibergen Member
Eibergen (Low Saxon: ''Eibarge'') is a town and former municipality in Gelderland in the Eastern Netherlands. It is part of the Achterhoek cultural region. The administrative cooperation of about 20 municipalities in this region is the Regio Achterhoek. On 1 January 2005 the municipality of Eibergen merged with the neighbouring municipalities of Neede, Borculo and Ruurlo into the new municipality of Berkelland. As of 2021, the town had a population of 11,210. Population centres Avest, Beltrum, Eibergen, Holterhoek, Hupsel, Lintvelde, Loo, Mallem, Olden Eibergen, Rekken, Zwolle. The town of Eibergen The town of Eibergen has a population of approximately 12,000 people. Its East boundary is the Dutch-German border and Eibergen used to count two official border crossing points on main roads and a small number of border crossing points for limited use on secondary roads. Since border crossing traffic became free and checks are only made inward at a certain distance from the actua ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Belgium
Belgium, ; french: Belgique ; german: Belgien officially the Kingdom of Belgium, is a country in Northwestern Europe. The country is bordered by the Netherlands to the north, Germany to the east, Luxembourg to the southeast, France to the southwest, and the North Sea to the northwest. It covers an area of and has a population of more than 11.5 million, making it the 22nd most densely populated country in the world and the 6th most densely populated country in Europe, with a density of . Belgium is part of an area known as the Low Countries, historically a somewhat larger region than the Benelux group of states, as it also included parts of northern France. The capital and largest city is Brussels; other major cities are Antwerp, Ghent, Charleroi, Liège, Bruges, Namur, and Leuven. Belgium is a sovereign state and a federal constitutional monarchy with a parliamentary system. Its institutional organization is complex and is structured on both regional ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
.JPG "Click for more on -> Gaimán Formation")
