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Многообразие рыб

Многообразие рыб. Михайлова Ольга Алексеевна учитель биологии МОУ «СОШ № 6» г. Шелехов Иркутской области. Надкласс рыбы классы хрящевые и костные. Класс хрящевые рыбы. акулы. скаты. Класс костные рыбы. Подкласс хрящекостны 2 семейства Осетровые веслоносые. Подкласс кистеперые.

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Многообразие рыб

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