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The complete history of the Universe -- from the Big Bang to 200 my into the future

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History of the Universe eBook. 398 pages, 300 illustrations only $2.99

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Flatworms Today

The ancestors of most animal groups were probably similar to modern flatworms (platyhelminths). Approximately 13,000 species of flatworms are found on Earth today. They are grouped in five classes:

flukes (Trematoda) - mostly parasitic

tapeworms (Cestoda) - mostly parasitic

planarians (Turbellaria) - mostly free-living

Monogenea - mostly parasitic

Aspidocotylea or Aspidobothria - mostly parasitic

Among other diseases, the flukes cause schistosomiasis in man.

For more information of flatworms, click here.

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History of the Universe eBook. 398 pages, 300 illustrations only $2.99

eBook only $2.99
398 pages, 300 images

"I find the science fabulous...an extremely useful teaching tool."
Professor David Christian

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