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  • Homo habilis - Wikipedia
    Homo habilis (lit 'handy man') is an extinct species of archaic human from the Early Pleistocene of East and South Africa about 2 4 million years ago to 1 65 million years ago Upon species description in 1964, H habilis was highly contested, with many researchers recommending it be synonymised with Australopithecus africanus, the only other
  • Insect Classification - The Canadian Encyclopedia
    Two very different and rather unrelated orders are represented in the living paleopterygotes, the Ephemeroptera (mayflies, 411 species estimated in Canada) and the Odonata (dragonflies and damselflies, over 190 species estimated in Canada) In the infraclass Neoptera, all adults are able to fold the wings over the body and flat down onto the
  • Using taxonomic revision data to estimate the geographic and . . .
    An extreme example is Erwin’s (1982) famous study of arthropod diversity in a tropical forest canopy which was extrapolated to give a global species diversity estimate of 30 million arthropod species Sampling such as this cannot be considered random, thus breaking a primary assumption of many commonly used statistical techniques
  • Habitat and species loss | Global Environment Facility
    The impacts that the human race is having on biodiversity are staggering Nature is declining globally at unprecedented rates, with species extinctions increasing exponentially The IPBES assessment from May 2019 painted a sobering picture of the sheer scale of this crisis: An estimated 1 million species threatened with extinction 75% of the land based environment and 66% of the marine
  • Landmark study on the evolution of insects | ScienceDaily
    The new reconstruction of the insect tree of life was only possible by a cooperation of more than 100 experts in molecular biology, insect morphology, paleontology, insect taxonomy, evolution
  • Species-Level Para- and Polyphyly in DNA Barcode Gene Trees . . .
    1 Based on the species name, all leaf nodes that belong to the focal species are collected 2 The most recent common ancestor (MRCA) of the collected leaf nodes is identified 3 All leaf nodes subtended by the identified MRCA are collected 4 If this set is the same as the set of leaf nodes in step 1, the species is monophyletic
  • The origin of birds - Understanding Evolution
    The origin of birds - Understanding Evolution





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