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View Diary: The Reptiles and the Synapsids Evolve (18 comments)

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  •  following now to rad back rest of time line :-) (5+ / 0-)

    before hitting this part

    If you are interested in reading other parts of the chronology, just look at my diary list starting with "The Beginning of the Physical Universe".
    was thinking "& what about the poor insects?  our elder earth life siblings that started about 100,000,000 years before reptiles"

    :-)

    •  rad= read ...but could also be subconscious (3+ / 0-)
      Recommended by:
      side pocket, Aunt Pat, GreyHawk

      "this is RAD"  :-)  

    •  Well the insects get their due in (4+ / 0-)

      "The Animal Kingdom Begins to Colonize the Land". . Here is the relevant portion:

      The Arthropods Invade

      Of crucial significance for the general ecology of the biosphere was the evolution and dispersal of the insects. Insects play an absolutely essential role in the Earth’s environment, as we will see in greater detail in a subsequent volume. Insects are a part of the vast Phylum Arthropoda, the origins of which stretch back to the Precambrian Eon. The arthropods preceded the first lobe-finned fishes who ventured ashore, and so we must count them as the earliest animal life on land. Various kinds of arthropods invaded the land independently many times. We have the first fossil evidence of arthropod terrestrialization in the Early to Mid-Ordovician, from about 488 to 460 million ybp. Evidence of the first true insects does not appear until the Early Devonian, beginning at about 416 million ybp.24 This was the start of the dominance, in terrestrial multicelled life, of the most spectacularly successful body plan in the Kingdom Animalia—head, thorax, and abdomen, accompanied by six legs. The first insects were wingless. The evolution of insect wings occurred by a process that has not yet been fully explained, but in the tropical forests of the Carboniferous Period large winged insects flourished. Indeed, many insects in the Carboniferous displayed very large sizes, basking in the warmth, moisture, and rich oxygen levels of Carboniferous tropical forests. (See below.) Indeed, the high oxygen levels in those regions may have facilitated the development of insect flight.25

      Read a preview of Volume One of my book here.

      by Yosef 52 on Fri Jul 05, 2013 at 11:12:23 AM PDT

      [ Parent ]

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