Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Trends of numbers of new names published each year for animals as a whole, and various taxonomic groups based on data in Index to organism names (ION) and BioNames (1923 is the year most published works became out of copyright in the USA). Animal pictures are from http://phylopic.org, and are either in the public domain or available under a Creative Commons CC-BY licence (Hymenoptera by Melissa Broussard; Nematoda by Michelle Site).
