Researchers have identified ancient lungfish burrows in the Ørsted Dal Formation in Greenland, dating back to approximately 210 million years ago. These burrows indicate that during the Late Triassic period, ecosystems experienced significant seasonal drying, prompting lungfish to burrow and adapt to changing environmental conditions.

• 01Lungfish burrows found in Greenland date back to 210 million years ago, indicating ancient environmental conditions.
• 02The burrows suggest seasonal drying and instability in ecosystems rather than a consistently wet environment.
• 03These findings challenge previous assumptions about the stability of ecosystems during the Late Triassic period.
• 04Similar burrows have been discovered in North America, indicating a broader pattern of environmental change.
• 05The behavior of lungfish during droughts provides insights into ancient ecological adaptations.