Vertebrates: An Overview of Chordates with Backbones and Craniums
Explore vertebrates, animals with backbones and skulls, including mammals, birds, reptiles, amphibians, and fish, and their vital roles in ecosystems and human life.
fish
Paleozoic Era: Overview of Earth’s First Major Geological Period
Explore the Paleozoic Era, Earth’s first major geological period, highlighting key evolutionary milestones and mass extinction events shaping life today.