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Artifacts from the Mike Mansfield Collection A Walk Through Time

A Walk Through Time

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  3. Panel 72: Night Journeys: First Mammals
Panel 72: Night Journeys: First Mammals

Panel 72: Night Journeys: First Mammals

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Small and nocturnal, the first mammals jump, climb, swing and swim through the dinosaur world. Obliged to inhabit small niches in a world of giants, mammals will discover that their diminutive size op..

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Small and nocturnal, the first mammals jump, climb, swing and swim through the dinosaur world. Obliged to inhabit small niches in a world of giants, mammals will discover that their diminutive size opens a proverbial window of opportunity.
In the first waves of mammal diversification, some rodent-sized insect-eaters evolve lactation, enabling mothers to spend more time in the nest keeping their young both fed and warm. Some mammal species evolve even smaller bodies.

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