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· ‘T.H. Huxley’ made the first attempt to explain the origin of man on a scientific basis in his book ‘Man’s Place in the Nature’ (1863AD). · ‘Charles Darwin’ published his views on man’s ancestry in the book ‘Descent of Man’ (1871AD). · Linnaeus gave the scientific name Homo sapiens to man. · Lucretius called men ‘Babies born out of the womb of the earth’. · Mammals originated from Therapsid reptiles in the Triassic period of the Mesozoic era about 250 million years ago. Its teeth, limbs and other skeletal features resembled those of present mammals. · First primitive mammal was an egg-laying prototherian that originated from synapsid reptiles in the Cretaceous period of the Mesozoic era. · Lemurs were the first primates to evolve. Primates appeared in the Paleocene epoch of the tertiary period of the Cenozoic era about 65 million years ago from the small terrestrial shrew-like insectivores, a stock from which other types of existing mammals also arose. · Certain insectivores started ...

·   Many theories have been put forward by many scientists to explain the mechanism of evolution. ·   Some of the important theories are given below. 1.  Lamarckism  or Lamarck's theory or Theory of Inheritance of Acquired characters 2.  Darwinism  or Darwin’s theory or Theory of Natural selection 3.  Mutation theory  of Hugo de Vries 4.  Modern synthetic theory  or Neo-Darwinism or Modern Concept of Evolution 1. Lamarckism or Lamarck's theory or Theory of Inheritance of Acquired Characters (1744-1829 AD) · Lamarck, the great French biologist, put forward the theory of evolution for the first time. · His famous book  'Philosophie Zoologique'  (Zoological Philosophies) was published in 1809 AD (the same year Darwin was born.) in which he discussed his theory in detail. · He coined the terms invertebrates and Annelida. · The term  Biology   was given by Lamarck and Treviranus in 1802 AD. · Main theme of Lamarck's theory...

List of National Parks, Wild Life reserves, conservation areas, hunting reserves and buffer zones of Nepal. A. National Parks Name & Altitude Established (A.D) Area (Km 2 ) Flora Fauna Unique features Chitwan National Park (150 to 815 m) 1973 932 • Sal forests (70%), • Grasslands (20%), • Riverine (7%) • Sal with Chirpine (3%) • Mammals (50 sp.), birds (over 525), Amphibians and reptiles (55 sp.) • Endangered fauna - Rhino, Gaur, Bengal tiger, Wild elephant, Four-horned antelope, Pangolin, Golden monitor lizard, Python, Bengal florican, Lesser florican, Giant hornbill, Black stork, White stork • First national Park of Nepal • Included in a world heritage site in 1984 • Known for one-horned Rhinoceros Sagarmatha National Park (2845 to 8848 m) 1976 1148 • Pine, fir, juniper • Alpine plant communities • Red Panda, Snow-leopard, Himalayan Thar, Pika, Ghoral, Musk deer • Birds (over 118 sp.) including Danphe (national bird of ...