324‑Million‑Year‑Old Fossil Shows Insects' Amphibious Phase in Land Conquest

A newly identified fossil dated to 324 million years ago contains paddle‑like abdominal limbs, indicating that early insects retained aquatic adaptations while moving onto land. The specimen bridges the gap between fully aquatic ancestors and the modern six‑legged insects that dominate terrestrial ecosystems today. Rather than an abrupt transition, the fossil evidence points to a prolonged amphibious phase in insect evolution. The discovery, published by ScienceDaily Science, provides the first concrete morphological link between water‑dwelling insects and their land‑dwelling descendants. Researchers can now refine models of insect terrestrialization and investigate how these paddle‑like limbs may have functioned in early terrestrial environments.