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Dagbatitherium
''Dagbatitherium'' is an extinct genus of proboscideans. So far a single molar from the phosphate basins of Togo in West Africa has been found. The fossil dates to the Middle Eocene, around 47 million years ago. A striking feature of the tooth are the three pairs of cusps oriented transversely to the longitudinal axis of the tooth. This feature is found in more derived proboscideans, which are grouped in the Elephantiformes. For its age, ''Dagbatitherium'' is the earliest member of Elephantiformes to date. Furthermore, it is characterized by a low tooth crown and a humped occlusal pattern. The genus was described in 2021. Discovery and naming The only tooth of ''Dagbatitherium'' found so far is from West Africa and was recovered in the Hahotoé-Kpogamé phosphate complex. These are phosphate-bearing deposits formed in a coastal basin. They extend over a length of 30 to 35 km and a width of 2 to 3 km in a northeast-southwest direction between the towns of Dagbati and Aveta in To ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Elephantiformes
Elephantiformes is a suborder within the order Proboscidea that contains the elephants Elephants are the largest existing land animals. Three living species are currently recognised: the African bush elephant, the African forest elephant, and the Asian elephant. They are the only surviving members of the family Elephantidae and ... as well as their extinct relatives. Elephant relatives such as the mammoths and the mastodons are included in this designation. References Mammal suborders {{afrotheria-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2021 In Paleomammology
This paleomammology list records new fossil mammal taxa that were described during the year 2021, as well as notes other significant paleomammology discoveries and events which occurred during 2021. Afrotherians Macroscelidea Proboscidea Proboscidean research * A study on changes of ecomorphological diversity of proboscideans throughout their evolutionary history is published by Cantalapiedra ''et al.'' (2021). * Revision of the fossil material of deinotheres belonging to the genus '' Prodeinotherium'' from the Miocene Vallès-Penedès Basin ( Spain) is published by Gasamans ''et al.'' (2021). * A study on faunal and floral components of dung associated with juvenile mastodon remains from East Milford ( Nova Scotia, Canada) dated to ~75,000 years BP, and on its implications of the knowledge of mastodon diet and environmental conditions in eastern Canada prior to the onset of the Wisconsin glaciation, is published by Cocker ''et al.'' (2021). * A study on the growth pat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Middle Eocene
The Eocene ( ) Epoch is a geological epoch that lasted from about 56 to 33.9 million years ago (mya). It is the second epoch of the Paleogene Period in the modern Cenozoic Era. The name ''Eocene'' comes from the Ancient Greek (''ēṓs'', "dawn") and (''kainós'', "new") and refers to the "dawn" of modern ('new') fauna that appeared during the epoch. The Eocene spans the time from the end of the Paleocene Epoch to the beginning of the Oligocene Epoch. The start of the Eocene is marked by a brief period in which the concentration of the carbon isotope 13C in the atmosphere was exceptionally low in comparison with the more common isotope 12C. The end is set at a major extinction event called the ''Grande Coupure'' (the "Great Break" in continuity) or the Eocene–Oligocene extinction event, which may be related to the impact of one or more large bolides in Siberia and in what is now Chesapeake Bay. As with other geologic periods, the strata that define the start and end ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Moeritherium
''Moeritherium'' ("the beast from Lake Moeris") is an extinct genus of primitive proboscideans. These prehistoric mammals are related to the elephant and, more distantly, sea cows and hyraxes. They lived during the Eocene epoch. Description ''Moeritherium'' was a rotund semi-aquatic mammal with short, stubby legs that lived about 37-35 million years ago Koehl, D. 200The genus ''Moeritherium'', ancestor of elephants.Downloaded on 6 December 2006. Its body shape and lifestyle demonstrate convergent evolution with pigs, tapirs, and the pygmy hippopotamus. ''Moeritherium'' was smaller than most or all later proboscideans, standing only high at the shoulder and weighing . The shape of their teeth suggests that they ate soft water vegetation. The shape of the skull suggests that, while ''Moeritherium'' did not have an elephant-like trunk, it may have had a broad flexible upper lip like a tapir's for grasping aquatic vegetation. The second incisor teeth formed small tusks, although the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fossils Of Togo
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, shells, exoskeletons, stone imprints of animals or microbes, objects preserved in amber, hair, petrified wood and DNA remnants. The totality of fossils is known as the ''fossil record''. Paleontology is the study of fossils: their age, method of formation, and evolutionary significance. Specimens are usually considered to be fossils if they are over 10,000 years old. The oldest fossils are around 3.48 billion years old to 4.1 billion years old. Early edition, published online before print. The observation in the 19th century that certain fossils were associated with certain rock strata led to the recognition of a geological timescale and the relative ages of different fossils. The development of radiometric dating techniques in the early 20th century allowed scientists to quantitatively measure the absolute ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eocene Mammals Of Africa
The Eocene ( ) Epoch is a geological epoch that lasted from about 56 to 33.9 million years ago (mya). It is the second epoch of the Paleogene Period in the modern Cenozoic Era. The name ''Eocene'' comes from the Ancient Greek (''ēṓs'', "dawn") and (''kainós'', "new") and refers to the "dawn" of modern ('new') fauna that appeared during the epoch. The Eocene spans the time from the end of the Paleocene Epoch to the beginning of the Oligocene Epoch. The start of the Eocene is marked by a brief period in which the concentration of the carbon isotope 13C in the atmosphere was exceptionally low in comparison with the more common isotope 12C. The end is set at a major extinction event called the ''Grande Coupure'' (the "Great Break" in continuity) or the Eocene–Oligocene extinction event, which may be related to the impact of one or more large bolides in Siberia and in what is now Chesapeake Bay. As with other geologic periods, the strata that define the start and end of t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prehistoric Placental 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. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Elephantimorpha
Elephantimorpha is a group that contains the elephants as well as their extinct relatives, the gomphotheres and stegodontids. The following cladogram shows the relationships among elephantimorphs, based on hyoid The hyoid bone (lingual bone or tongue-bone) () is a horseshoe-shaped bone situated in the anterior midline of the neck between the chin and the thyroid cartilage. At rest, it lies between the base of the mandible and the third cervical vertebra. ... characteristics: References {{afrotheria-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Omanitherium
''Omanitherium'' (meaning ''Oman beast'') is a genus of an extinct genus of barytheriid proboscidean that lived during the early 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 ... in Oman. It belongs to the family Barytheriidae, which represented the first large size proboscideans to appear in the fossil record and were characterized by a strong sexual dimorphism.M. Al-Kindi, M. Pickford, Y. Al-Sinani, I. Al-Ismaili, A. Hartman and A. Heward. 2017. Large Mammals from the Rupelian of Oman – Recent Finds. Fossil Imprint 73(3-4):300-321 References Oligocene proboscideans Prehistoric placental genera Fossil taxa described in 2012 {{Paleo-afrotheria-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arcanotherium
''Arcanotherium'' is an extinct genus of early proboscidean belonging to the family Numidotheriidae that lived in north Africa during the late Eocene/early Oligocene interval. Taxonomy ''Arcanotherium'' was originally described by Court (1995) as a new species of '' Numidotherium'', ''N. savagei'', based on a mandible found in the late 1960s in late Eocene deposits at Dor el Talha, Libya Libya (; ar, ليبيا, Lībiyā), officially the State of Libya ( ar, دولة ليبيا, Dawlat Lībiyā), is a country in the Maghreb region in North Africa. It is bordered by the Mediterranean Sea to the north, Egypt to the east, Su .... However, after the ''Barytherium'' material from Libya became accessible to paleontologists, undescribed material from the collection prompted Delmer (2009) to erect ''Arcanotherium'' for ''N. savagei''.C. Delmer. 2009. Reassessment of the generic attribution of Numidotherium savagei and the homologies of lower incisors in proboscideans. Acta Pa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Daouitherium
''Daouitherium'' ("Sidi Daoui beast" from the name of the site where it was discovered) is an extinct genus of early proboscideans (a group including modern elephants and their extinct relatives) that lived during the early Eocene (Ypresian stage) some 55 million years ago in North Africa. Remains of this animal, fragments of jaws and teeth, have been found in the Ouled Abdoun Basin in Morocco. It is estimated to have weighed between , making it one of the earliest large mammals known from Africa and one of the oldest known proboscideans. Another estimate gives a weight of . Description ''Daouitherium'' is known only from lower jaws and associated cheek teeth. It had lophodont and bilophodont molars, i.e. molars with large ridges. The second and third premolars had a notably large cusp called the hypoconid. Gheerbrant et al. described the teeth as similar to those of other early proboscideans ''Phosphatherium'', ''Numidotherium'', and ''Barytherium''. See also *Fauna of Afric ... [...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 o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
