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Qasr El Sagha Formation
The Qasr el Sagha Formation is a geological formation located in Egypt. The formation is part of the Wadi El Hitan World Heritage Site. The Qasr el Sagha Formation overlies the Birket Qarun Formation and is overlain by the Gebel Qatrani Formation. The sandstones and shales of the formation were deposited in a deltaic to shallow marine environment.Gingerich et al., 2019 It dates to the Late Eocene (middle Priabonian, ). Paleontological significance Fossils of the early whale genus ''Saghacetus'' ("Sagha whale", originally named "''Zeuglodon osiris''") were first collected at Qasr al Sagha by German explorer Georg August Schweinfurth in January 1886 (a well-preserved dentary).''Saghacetus'' is common in the middle of Qasr el Sagha, but there are few other specimens of archaeocetes whales; the only exception being the enigmatic "''Prozeuglodon stromeri''", named in 1828 based on specimens from 1904, but never adequately described before their destruction during the bombing of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Priabonian
The Priabonian is, in the ICS's geologic timescale, the latest age or the upper stage of the Eocene Epoch or Series. It spans the time between . The Priabonian is preceded by the Bartonian and is followed by the Rupelian, the lowest stage of the Oligocene. Stratigraphic definition The Priabonian Stage was introduced in scientific literature by Ernest Munier-Chalmas and Albert de Lapparent in 1893. The stage is named after the small hamlet of Priabona in the community of Monte di Malo, in the Veneto region of northern Italy. The base of the Priabonian Stage is at the first appearance of calcareous nannoplankton species ''Chiasmolithus oamaruensis'' (which forms the base of nanoplankton biozone NP18). An official GSSP was ratified in 2020, and was placed in the Alano di Piave section in Alano di Piave, Belluno, Italy. The top of the Priabonian Stage (the base of the Rupelian Stage and Oligocene Series) is at the extinction of foram genus ''Hantkenina''. Sometimes local rock ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Saghacetus
''Saghacetus'' is an extinct genus of basilosaurid early whale, fossils of which have been found in the Upper Eocene (middle Priabonian, ) Qasr el Sagha Formation, Egypt (, paleocoordinates ). In 1879, German botanist Georg August Schweinfurth spent many years exploring Africa and eventually discovered the first archaeocete whale in Egypt. He visited Qasr el Sagha in 1884 and 1886 and missed the now famous " Zeuglodon Valley" with a few kilometres. German palaeontologist Wilhelm Barnim Dames described the material, including a well-preserved dentary which is the type specimen of ''Zeuglodon osiris''. The generic name ''Saghacetus'' was established by to group the ancient species ''Dorudon osiris'', ''D. zitteli'', ''D. sensitivius'' and ''D. elliotsmithii'' on a single species, ''Saghacetus osiris''. This species is distinguished from other members of the subfamily Dorudontinae by its smaller size and the slightly elongated proximal lumbar and caudal vertebrae. ''Saghacet ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dugongidae
Dugongidae is a family in the order of Sirenia. The family has one surviving species, the dugong (''Dugong dugon''), one recently extinct species, Steller's sea cow (''Hydrodamalis gigas''), and a number of extinct 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 †''Anisosiren'' ** Genus †''Caribosiren'' ** Genus †'' Indosiren'' ** Genus †''Lentiarenium'' ** Genus †''Kaupitherium'' ** Genus †'' Paralitherium'' ** Genus †''Priscosiren'' ** Genus †'' Prohalicore'' ** Genus †''Sirenavus'' ** Subfamily †Halitheriinae *** Genus †''Halitherium'' (''nomen dubium'') ** Subfamily ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Birket Qarun
Lake Moeris ( grc, Μοῖρις, genitive Μοίριδος) is an ancient lake in the northwest of the Faiyum Oasis, southwest of Cairo, Egypt. In prehistory, it was a freshwater lake, with an area estimated to vary between and . It persists today as a smaller saltwater lake called Birket Qarun. The lake's surface is below sea-level, and covers about . The lake and surrounding area is a protected area and has been designated as a Ramsar site since 2012. It is a source for tilapia and other fish from the local area. The prehistoric mammal ''Moeritherium'' was found in this area. History When the Mediterranean Sea was a hot dry hollow near the end of the Messinian Salinity Crisis in the late Miocene, Faiyum was a dry hollow, and the Nile flowed past it at the bottom of a canyon (2,400 m deep or more where Cairo is now). After the Mediterranean reflooded at the end of the Miocene, the Nile canyon became an arm of the sea reaching inland farther than Aswan. Over geological ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Barytherium GraveDB1
''Barytherium'' (meaning "heavy beast") is a genus of an extinct family ( Barytheriidae) of primitive proboscideans that lived during the late Eocene and early Oligocene in North Africa. The type species is ''Barytherium grave'', found at the beginning of the 20th century in Fayum, Egypt. Since then, more complete specimens have been found at Dor el Talha, Libya. More fossils were also discovered in 2011 in the Aidum area in Dhofar by Oman's Ministry of Heritage and Culture, which was named ''Barytherium omansi''. , ''The Omani Observer'', May 22, 2011, retrieved May 22, 2011. Description [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Proboscidea
The Proboscidea (; , ) are a taxonomic order of afrotherian mammals containing one living family (Elephantidae) and several extinct families. First described by J. Illiger in 1811, it encompasses the elephants and their close relatives. From the mid-Miocene onwards, most proboscideans were very large. The largest land mammal of all time may have been a proboscidean; ''Palaeoloxodon namadicus'' was up to at the shoulder and may have weighed up to , almost double the weight of some sauropods like ''Diplodocus carnegii''. The largest extant proboscidean is the African bush elephant, with a record of size of at the shoulder and . In addition to their enormous size, later proboscideans are distinguished by tusks and long, muscular trunks, which were less developed or absent in early proboscideans. Three species of elephant are currently recognised: the African bush elephant, the African forest elephant, and the Asian elephant. Elephantidae is the only surviving family of the or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Barytherium
''Barytherium'' (meaning "heavy beast") is a genus of an extinct family (Barytheriidae) of primitive proboscideans that lived during the late Eocene and early Oligocene in North Africa. The type species is ''Barytherium grave'', found at the beginning of the 20th century in Fayum, Egypt. Since then, more complete specimens have been found at Dor el Talha, Libya. More fossils were also discovered in 2011 in the Aidum area in Dhofar by Oman's Ministry of Heritage and Culture, which was named ''Barytherium omansi''. , ''The Omani Observer'', May 22, 2011, retrieved May 22, 2011. Description [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eosiren
''Eosiren'' is an extinct genus of sea cow that lived during the Late Eocene (later Priabonian) to Early Oligocene (Rupelian).Zalmout I.S. & Gingerich P.D. (2012)“Late Eocene sea cows (Mammalia, Sirenia) from Wadi al Hitan in the western desert of Fayum, Egypt” ''University of Michigan Papers on Paleontology'' No. 37 Several fossils have been found in Egypt. It seems like the species ''E. abeli'' were contemporaneous with ''Protosiren'' and ''Eotheroides''. like them, ''Eosiren'' closely resembled modern sirenians. It differes from them by having somewhat larger innominates and possess thigh bones. ''Eosiren'' was first described by vertebrage paleontologist Charles William Andrews in 1902, who distinguished it from the genus ''Halitherium'' due to differences in the teeth and mandible. Later that year, ''Science Science is a systematic endeavor that builds and organizes knowledge in the form of testable explanations and predictions about the universe. Science ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Afrothere
Afrotheria ( from Latin ''Afro-'' "of Africa" + ''theria'' "wild beast") is a clade of mammals, the living members of which belong to groups that are either currently living in Africa or of African origin: golden moles, elephant shrews (also known as sengis), tenrecs, aardvarks, hyraxes, elephants, sea cows, and several extinct clades. Most groups of afrotheres share little or no superficial resemblance, and their similarities have only become known in recent times because of genetics and molecular studies. Many afrothere groups are found mostly or exclusively in Africa, reflecting the fact that Africa was an island continent from the Cretaceous until the early Miocene around 20 million years ago, when Afro-Arabia collided with Eurasia. Because Africa was isolated by water, Laurasian groups of mammals such as insectivores, rodents, lagomorphs, carnivorans and ungulates could not reach Africa for much of the early to mid-Cenozoic. Instead, the niches occupied by those groups on the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mammal
Mammals () are a group of vertebrate animals constituting the class Mammalia (), characterized by the presence of mammary glands which in females produce milk for feeding (nursing) their young, a neocortex (a region of the brain), fur or hair, and three middle ear bones. These characteristics distinguish them from reptiles (including birds) from which they diverged in the Carboniferous, over 300 million years ago. Around 6,400 extant species of mammals have been described divided into 29 orders. The largest orders, in terms of number of species, are the rodents, bats, and Eulipotyphla (hedgehogs, moles, shrews, and others). The next three are the Primates (including humans, apes, monkeys, and others), the Artiodactyla ( cetaceans and even-toed ungulates), and the Carnivora (cats, dogs, seals, and others). In terms of cladistics, which reflects evolutionary history, mammals are the only living members of the Synapsida (synapsids); this clade, together with Saur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fossilworks
Fossilworks is a portal which provides query, download, and analysis tools to facilitate access to the Paleobiology Database The Paleobiology Database is an online resource for information on the distribution and classification of fossil animals, plants, and microorganisms. History The Paleobiology Database (PBDB) originated in the NCEAS-funded Phanerozoic Marine Pale ..., a large relational database assembled by hundreds of paleontologists from around the world. History Fossilworks was created in 1998 by John Alroy and is housed at Macquarie University. It includes many analysis and data visualization tools formerly included in the Paleobiology Database.{{cite web, title=Frequently asked questions, url=http://www.fossilworks.org/cgi-bin/bridge.pl?page=FAQ, publisher=Fossilworks, access-date=17 December 2021 References {{Reflist External links {{Wikidata property, P842 * [Baidu] |
.JPEG/1200px-Zeuglodon_osiris_dentary_(Dames1894).JPEG "Click for more on -> Saghacetus")
.png "Click for more on -> Barytherium GraveDB1")
