Ctenophores are one of, if not the, oldest animals on Earth — quite possibly a sister to all other animals in the tree of life, so “they provide a really unique opportunity to study ...

They are named for their combs, rows of hairlike appendages called cilia they use to move through the water. Ctenophores are one of, if not the, oldest animals on Earth — quite possibly a sister to ...

However, you can still find bristlecone pines in Nevada. Here's a look at the oldest trees and animals on the planet and where to find them. Bristlecone pines grow in Nevada, California ...