Science ❯ Ecology ❯ Ecosystems

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Scavengers Early Animal Life Species Distribution Herbivory Aquatic and Terrestrial Species Herbivores Predators Predator-Prey Relationships Parasitic Relationships Insectivory Predation Trophic Levels Ground Squirrels Mesopredators

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Yukon Squirrel Coprolites Yield 700,000‑Year Environmental DNA

The team reconstructed more than 18 mitochondrial genomes from permafrost‑sealed squirrel droppings, creating a new window on Ice Age ecosystems that also raises questions about sample ages and contamination.