In fact, there were only single-celled organisms that could move around through the waters of the oceans. Needless to say, these single-celled organisms were quite simple compared to what we see ...
A new study sheds light on how a species of foraminifera, single-celled organisms found in almost all marine habitats, thrives in a dark, oxygen-free environment.
The fossil offers new insight into the transition of single celled organisms to complex, multicellular animals. Modern single-celled holozoa include the most basal living animals and the fossil ...