Category:Amphibians described in the 20th century is part of WikiProject Amphibians and Reptiles, an effort to make Wikipedia a standardized, informative, comprehensive and easy-to-use resource for amphibians and reptiles. If you would like to participate, you can choose to edit this article, or visit the project page for more information.Amphibians and ReptilesWikipedia:WikiProject Amphibians and ReptilesTemplate:WikiProject Amphibians and Reptilesamphibian and reptile articles
This category is within the scope of WikiProject Years, a collaborative effort to improve the coverage of Years on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.YearsWikipedia:WikiProject YearsTemplate:WikiProject YearsYears articles
