2 Answered Questions for the topic vertebrates
What is the smallest known organism with a skeleton?
See question title. After doing some looking around on my own I haven't found much so I figured I'd ask some experts.
Why are vertebrae, specifically, so important in classification?
A fundamental level of animal classification is the distinction between vertebrates and invertebrates. The vertebrata are, arguably, often classified as higher life forms than the invertebrata. But... more