noun
- A taxonomic rank in biological classification that is below a subclass and above a superorder.
Usage: technical; biology
Examples
- In zoological taxonomy, infraclass is used to organize groups of animals with shared characteristics.
- The infraclass Eutheria includes all placental mammals.
- Biologists use infraclass as an intermediate rank when finer classification is needed between subclass and superorder.
- The infraclass system helps scientists organize the vast diversity of living organisms more precisely.