Types of Species
- Morphospecies : Species erected on the basis of morphological characters only.
- Taxonomic species : Species having a definite binomial name.
- Sibling species : true species which do not interbreed, but are otherwise difficult to separate on the basis of morphological characters alone.
- Allopatric species : Species having exclusive areas of geographic distribution.
- Sympatric species : Species having overlapping areas of geographic distribution .
- Parapatric species : Species with adjacent geographic ranges meeting in very narrow zone of overlap.
- Neontological species : living species
- Allochronic species : species belonging to different time period.
- Synchronic species : Species belonging to same period of time.
- Polytypic species : Species which have more than one ideal types (subspecies) according to their geographically isolated areas.
