|
Hadropithecus
''Hadropithecus'' is a medium-sized, extinct genus of lemur, or strepsirrhine primate, from Madagascar that includes a single species, ''Hadropithecus stenognathus''. Due to its rarity and lack of sufficient skeletal remains, it is one of the least understood of the extinct lemurs. Both it and '' Archaeolemur'' are collectively known as " monkey lemurs" or "baboon lemurs" due to body plans and dentition that suggest a terrestrial lifestyle and a diet similar to that of modern baboons. ''Hadropithecus'' had extended molars and a short, powerful jaw, suggesting that it was both a Grazing, grazer and a Seed predation, seed predator. The monkey lemurs are considered to be most closely related to the living indriids and the recently extinct sloth lemurs, although recent finds had caused some dispute over a possible closer relation to living Lemuridae, lemurids. Genetic tests, however, have reaffirmed the previously presumed relationship. ''Hadropithecus'' lived in open habitat in the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monkey Lemur
The monkey lemurs or baboon lemurs (Archaeolemuridae) are a recently extinct family of lemurs known from skeletal remains from sites on Madagascar dated to 1000 to 3000 years ago. The monkey lemur family is divided into two genera, ''Hadropithecus'' and ''Archaeolemur'', and three species. Description Reconstructions indicate that the extinct lemurs did not climb very often and imply that they were much more adept at Terrestrial locomotion, terrestrial living, more than any other extant strepsirrhine; they are not believed to have been exclusively terrestrial, but rather to have had a combined habitat of ground and arboreal life. A modest degree of curvature found in the remains support this idea. The genus ''Archaeolemur'' consists of two known species, ''Archaeolemur edwardsi'' and ''Archaeolemur majori''. The hands and feet are very robust and large in size, but are very short, and said to be closer to the likeness of a baboon's hand. The hind-limbs are also known to be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Subfossil Lemur
Subfossil lemurs are lemurs from Madagascar that are represented by recent (subfossil) remains dating from nearly 26,000 years ago to approximately 560 years ago (from the late Pleistocene until the Holocene). They include both extant and Extinction, extinct species, although the term more frequently refers to the extinct giant lemurs. The diversity of subfossil lemur communities was greater than that of present-day lemur communities, ranging to as high as 20 or more species per location, compared with 10 to 12 species today. Extinct species are estimated to have ranged in size from slightly over to roughly . Even the subfossil remains of living species are larger and more robust than the skeletal remains of modern specimens. The subfossil sites found around most of the island demonstrate that most giant lemurs had wide distributions and that ranges of living species have contracted significantly since the arrival of humans. Despite their size, the giant lemurs sha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Archaeolemur
''Archaeolemur'' is an extinct genus of subfossil lemurs known from the Quaternary of Madagascar. ''Archaeolemur'' is one of the most common and well-known of the extinct giant lemurs as hundreds of its bones have been discovered in fossil deposits across the island. It was larger than any extant lemur, with a body mass of approximately , and is commonly reconstructed as the most frugivorous and terrestrial of the fossil Malagasy primates. Colloquially known as a "monkey lemur," ''Archaeolemur'' has often been compared with anthropoids, specifically the cercopithecines, due to various morphological convergences. In fact, it was even misidentified as a monkey when remains were first discovered. Following human arrival to Madagascar just over 2000 years ago, many of the island’s megafauna went extinct, including the giant lemurs. Radiocarbon dating indicates that ''Archaeolemur'' survived on Madagascar until at least 1040-1290 AD, outliving most other subfossil lemurs. Taxonomy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ludwig Lorenz Von Liburnau
Ludwig Lorenz von Liburnau (26 August 1856 in Fiume – 9 December 1943 in St. Gilgen) was an Austrian zoologist. He was the son of naturalist Josef Roman Lorenz von Liburnau (1825–1911). In 1879 he obtained his PhD from the University of Vienna, receiving his habilitation in zoology in 1898. From 1880 to 1922 he was associated with the '' Naturhistorisches Museum'' in Vienna. In 1899 he was the first scientist to provide analysis of '' Hadropithecus stenognathus'' (an extinct species of lemur), a study based on a mandible discovered by fossil collector Franz Sikora at Andrahomana cave in southeastern Madagascar. At the time, Lorenz believed the specimen to be the mandible of an anthropoid primate species. The North Island kaka ('' Nestor meridionalis septentrionalis''), a nationally endangered bird from New Zealand New Zealand () is an island country in the southwestern Pacific Ocean. It consists of two main landmasses—the North Island () and the South Island () ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Andrahomana
The Andrahomana Cave is a complex of sinkholes in Andranobory (Anosy region, near Fort-Dauphin) in south eastern Madagascar. Megafauna It is remarkable due to the number of fossils of extinct megafauna of the island. It is where were found, among other animals, fossils of the giant lemur '' Hadropithecus stenognathus'', the pygmy hippo ''Hippopotamus lemerlei Lemerle's dwarf hippopotamus (''Hippopotamus lemerlei'') is an extinct species of Malagasy hippopotamus. Taxonomy Malagasy hippopotamuses were first discovered in the mid-19th century by Alfred Grandidier, who unearthed nearly 50 individual hi ...'', and the giant land tortoise '' Aldabrachelys grandidieri''.Goodman SM, Jungers WL. Human Interactions with Now-Extinct Land Vertebrates. In ''Extinct Madagascar'' 2021 Jan 20 (pp. 47-51). University of Chicago Press. References Caves of Madagascar Sinkholes of Africa {{Madagascar-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lemur
Lemurs ( ; from Latin ) are Strepsirrhini, wet-nosed primates of the Superfamily (biology), superfamily Lemuroidea ( ), divided into 8 Family (biology), families and consisting of 15 genera and around 100 existing species. They are Endemism, endemic to the island of Madagascar. Most existing lemurs are small, have a pointed snout, large eyes, and a long tail. They arboreal, chiefly live in trees and nocturnal, are active at night. Lemurs share resemblance with other primates, but evolved independently from monkeys and apes. Due to Madagascar's highly seasonal climate, Evolution of lemurs, lemur evolution has produced a level of species diversity rivaling that of any other primate group. Living lemurs range in weight from the mouse lemur to the indri. Since the arrival of humans on the island around 2,000 years ago, over a dozen species of "giant lemurs" larger than living lemur species have become extinct, including the gorilla-sized ''Archaeoindris''. Lemurs share ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sloth Lemur
The sloth lemurs (Palaeopropithecidae) comprise an extinct family of lemurs that includes four genera. The common name can be misleading, as members of Palaeopropithecidae were not closely related to sloths. This clade has been dubbed the ‘‘sloth lemurs’’ because of remarkable postcranial convergences with South American sloths. Despite postcranial similarities, the hands and feet show significant differences. Sloths possess long, curved claws, while sloth lemurs have short, flat nails on their distal phalanges like most primates. Diet Members of the family Palaeopropithecidae appear to have eaten a mix of fruit, nuts, and foliage. The sloth lemurs were mixed-feeders rather than specialized browsers who ate a mixed diet based on seasonality. On the basis of highly robust mandible, ''Palaeopropithecus'' and ''Archaeoindris'' can be considered highly folivorous. The family Palaeopropithecidae exhibited molar megadonty, small deciduous teeth with low occlusal length rati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paleontologist
Paleontology, also spelled as palaeontology or palæontology, is the scientific study of the life of the past, mainly but not exclusively through the study of fossils. Paleontologists use fossils as a means to classify organisms, measure geologic time, and assess the interactions between prehistoric organisms and their natural environment. While paleontological observations are known from at least the 6th century BC, the foundation of paleontology as a science dates back to the work of Georges Cuvier in 1796. Cuvier demonstrated evidence for the concept of extinction and how life of the past was not necessarily the same as that of the present. The field developed rapidly over the course of the following decades, and the French word ''paléontologie'' was introduced for the study in 1822, which was derived from the Ancient Greek word for "ancient" and words describing relatedness and a field of study. Further advances in the field accompanied the work of Charles Darwin who popu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mandible
In jawed vertebrates, the mandible (from the Latin ''mandibula'', 'for chewing'), lower jaw, or jawbone is a bone that makes up the lowerand typically more mobilecomponent of the mouth (the upper jaw being known as the maxilla). The jawbone is the skull's only movable, posable bone, sharing Temporomandibular joint, joints with the cranium's temporal bones. The mandible hosts the lower Human tooth, teeth (their depth delineated by the alveolar process). Many muscles attach to the bone, which also hosts nerves (some connecting to the teeth) and blood vessels. Amongst other functions, the jawbone is essential for chewing food. Owing to the Neolithic Revolution, Neolithic advent of agriculture (), human jaws evolved to be Human jaw shrinkage, smaller. Although it is the strongest bone of the facial skeleton, the mandible tends to deform in old age; it is also subject to Mandibular fracture, fracturing. Surgery allows for the removal of jawbone fragments (or its entirety) as well a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Central Highlands (Madagascar)
The Central Highlands, Central High Plateau, or Hauts-Plateaux are a mountainous biogeographical region in central Madagascar. They include the contiguous part of the island's interior above 800 m (2,600 ft) elevation. The Central Highlands are separated from the Northern Highlands of the northern tip of Madagascar by a low-lying valley, the Mandritsara Window, which has apparently acted as a barrier to dispersal for species in the highlands, leading to species pairs such as ''Voalavo gymnocaudus'' and '' Voalavo antsahabensis'' in the Northern and Central Highlands. Species restricted to the Central Highlands include the bats '' Miniopterus manavi'' and '' Miniopterus sororculus''; the rodents '' Brachyuromys betsileoensis'' and ''Voalavo antsahabensis''; the tenrecs '' Hemicentetes nigriceps'' and '' Oryzorictes tetradactylus''; and the lemur '' Cheirogaleus sibreei''. Because of the continuous habitat of the Central Highlands, there is little local endemism, unlike t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lemuriformes
Lemuriformes is the sole extant infraorder of primate that falls under the suborder Strepsirrhini. It includes the lemurs of Madagascar, as well as the galagos and lorisids of Africa and Asia, although a popular alternative taxonomy places the lorisoids in their own infraorder, Lorisiformes. Lemuriform primates are characterized by a toothcomb, a specialized set of teeth in the front, lower part of the mouth mostly used for combing fur during grooming. Evolutionary history Lemuriform origins are unclear and debated. American paleontologist Philip Gingerich proposed that lemuriform primates evolved from one of several genera of European adapids based on similarities between the front lower teeth of adapids and the toothcomb of extant lemuriforms; however, this view is not strongly supported due to a lack of clear transitional fossils. Instead, lemuriforms may be descended from a very early branch of Asian cercamoniines or sivaladapids that immigrated to northern Africa. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
