Answer | Crossword Clue |
---|---|
superorders | SUPERORDER, a group intermediate in importance between an order and a subclass |
superorder | a group intermediate in importance between an order and a subclass |
archaebacteria | Microorganisms that are similar to bacteria in size and simplicity of structure but radically different in molecular organization. They are now believed to constitute an ancient intermediate group between the bacteria and eukaryotes |