There are millions of different types of living things on Earth. In order to keep track of them all, scientists put living things into groups based on characteristics that they have that are the same.

Introduction to invertebrates of inland waters / James H. Thorp, Walter W. Dimmick, and Alan P. Covich -- An overview of inland aquatic habitats / James H. Thorp and Alan P. Covich -- Protozoa / ...

Though the idea of roaming around boneless is foreign to us as humans, it is actually the state of the vast majority of life ...

This is a beginner's guide to the common groups of freshwater invertebrates found in Britain. It is designed to help you differentiate broad groups of common freshwater invertebrates, principally to ...

Fossils preserved in Dominican amber reveal a new family, genus and species of microinvertebrate from the mid-Tertiary period, a discovery that shows unique lineages of the tiny creatures were living ...