# The rationale for removing typification from virus taxonomy

## TL;DR

This paper explains why the practice of typification was removed from virus taxonomy and evaluates its relevance.

## Contribution

The paper provides a rationale for abolishing typification in virus taxonomy, a change recently implemented by the International Committee on Taxonomy of Viruses.

## Key findings

- Typification was historically used to ensure nomenclatural stability in taxonomy.
- The International Committee on Taxonomy of Viruses removed the requirement for type species in virus taxonomy in 2021.
- The paper argues that typification is no longer necessary for virological practice.

## Abstract

Typification, the linkage of a name-bearing “type” to a taxon and the description and deposition of a corresponding type specimen, has been a principle of biological taxonomy for over two centuries. It was introduced to promote nomenclatural uniformity and stability. Until recently, a modified form of typification was also written in the rules governing the taxonomy of viruses. However, in 2021, the International Committee on Taxonomy of Viruses abolished all type species and removed the requirement to designate a type species when a new genus is created. In this article, I briefly review the history of typification, explain its purpose and evaluate its relevance to current virological practice.