is the bedrock of biological diversity. Covering over 95% of all animal species on Earth, from the simplest porifera to the complex cephalopods, this course is often a turning point for university biology majors. However, the sheer volume of phyla, anatomical oddities, and life cycles can be overwhelming.
The field is constantly evolving with groundbreaking research. In early 2026, synchrotron imaging revealed that a fossil long thought to be the world's oldest octopus was actually a relative of the modern Nautilus invertebrate zoology lecture notes ppt new