A deep dive into the 2.7‑million-year connection formed by the Isthmus of Panama that joined North and South America. We explore the dramatic, asymmetric faunal exchange—North American invaders sweeping south while many South American endemics were outpaced—plus the surprising pre‑GABI oceanic dispersals, the survival of xenarthrans and opossums, and the enduring legacy of this epoch in today’s American fauna.

Note: This podcast was AI-generated, and sometimes AI can make mistakes. Please double-check any critical information.

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