List of monotremes and marsupials
Код 3432705
- ISBN: 978-5-5089-5239-6
Код 3432705
High Quality Content by WIKIPEDIA articles! The class Mammalia (mammals) is divided into two subclasses based on reproductive techniques: egg-laying mammals (monotremes) and mammals which give live birth (therians). The latter subclass is divided into two infraclasses: pouched mammals (marsupials) and placental mammals (eutherians).
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