sentence: Antelopes are a group which is ecologically very important, and have many similar features.
sentences_before: Species or groups are put in the wastebsket taxon when they do not fit into one of the regular taxa. Regular taxa are supposed to be monophyletic. By definition, wastebasket taxa are either paraphyletic or polyphyletic. Their name may still be very useful to biologists, because its members may be an important evolutionary grade.
sentences_after: However, they are not monophyletic. Species are called 'antelopes' if they look like one.
concept_name: antelope
headings: Wastebasket taxon
categories: Taxonomy Evolutionary biology