Understanding Vertebrate Evolution: Focus on Monotremes and Marsupials

Jan 17, 2026

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This lecture explores the fascinating world of vertebrate evolution, particularly focusing on monotremes and marsupials. Monotremes, such as the platypus, are unique among mammals for laying eggs. In contrast, marsupials, including kangaroos and koalas, are characterized by giving birth to underdeveloped young that continue to grow in a pouch. This lecture illustrates the reproductive strategies of these groups, highlighting the adaptations that enable them to thrive in their environments.

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Understanding Vertebrate Evolution: Focus on Monotremes and Marsupials

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Lecture 6ANIMAL EVOLUTION: THE VERTEBRATES
Monotremes Platypus Anteater
Marsupials: • Group of animals with a pouch • are born while in an embryonic stage and finish development outside the mother's body, often in a pouch. • Marsupial young leave the uterus, crawl to the pouch where they suckle and grow • E.g. Kangaroos & koalas.