The Living Fossils.... வாழும் தொல்லுயிர்கள்... #fossils #geology #history #science #gk

The provided texts explore the concept of *"living fossils,"* which are archaic species like coelacanths, horseshoe crabs, and ginkgo trees that have persisted largely unchanged for millions of years while retaining ancient evolutionary traits. Specifically, sources highlight *horseshoe crabs* as crucial contributors to human medicine through their blue blood used in bacterial testing, though they face severe modern threats from overharvesting, commercial fishing, and shoreline destruction in North and South America as well as Asia. Additionally, the readings detail *conservation challenges* and protective measures, including the establishment of marine reserves, captive breeding programs, and citizen science initiatives aimed at preserving these vulnerable aquatic organisms during the Anthropocene.