Grandes descobertas sobre os mamíferos são feitas na Austrália

Uma descoberta revelou três novas espécies de mamíferos que põem ovos.

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Isso foi descoberto a partir de fragmentos de mandíbulas fossilizadas de milhões de anos que estavam guardados no cofre antigo do Museu Australiano.

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A pesquisa aponta que os nove fósseis são monotremados (mamíferos que põe ovos)

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Hoje, os mamíferos foram praticamente extintos e substituídos por marsupiais e mamíferos placentários.

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Apenas ornitorrincos e equidnas ainda existem, mas só vivem na Austrália.

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