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A level used in classification. In the sequence of classification levels, an order forms part of a class and is subdivided into one or more families. The world's birds are separated into 45 [1] orders [2]

 Pelecaniformes
Pelicaniformes

References[]

  1. ^ It originally said 29, not 45.
  2. ^ Frances, Peter; et al. (2007). Bird: The Definitive Visual Guide. Dorling Kindersley Inc. ISBN 1564582957. 
Anatomy of an amiotic egg This article is part of Project Glossary, an All Birds project that aims to write comprehensive articles on each term related to animals.


Hemipus picatus This article is part of Project Taxonomy, an All Birds project that aims to write comprehensive articles on each taxonomic term.
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