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The following is a list of the classes in each phylum of the kingdom Animalia. There are 107 classes of animals in 33 phyla in this list. However, different sources give different numbers of classes and phyla. For example, Protura, Diplura, and Collembola are often considered to be the three orders in the class Entognatha. This list should by ...
Orders of plants, fungi, and algae use the suffix -ales (e.g. Dictyotales). [3] Orders of birds and fishes [4] use the Latin suffix -iformes meaning 'having the form of' (e.g. Passeriformes), but orders of mammals, reptiles, amphibians and invertebrates are not so consistent (e.g. Artiodactyla, Anura, Crocodylia, Actiniaria, Primates).
The higher taxonomy used for the ungulates of this order is based primarily on the Handbook of the Mammals of the World, Volume 2 on hoofed mammals, including the subfamily and tribal affiliations in each family. The order includes about 242 recognized ungulate species, along with 6 recently extinct species.
Bilateria is an extremely diverse group of animals containing a vast majority of its species, largely due to the enormous amount of arthropods. This article is a list of orders contained within Bilateria separated by phylum. Groups that are not contained within an order are listed separately.
For animals, there are standard suffixes for taxa only up to the rank of superfamily. [30] Uniform suffix has been suggested (but not recommended) in AAAS [31] as -ida / ɪ d ə / for orders, for example; protozoologists seem to adopt this system. Many metazoan (higher animals) orders also have such suffix, e.g. Hyolithida and Nectaspida ...
Over 1.5 million living animal species have been described—of which around 1 million are insects—but it has been estimated there are over 7 million in total. Animals range in size from 8.5 millionths of a metre to 33.6 metres (110 ft) long and have complex interactions with each other and their environments, forming intricate food webs .
Molecular studies by molecular systematists, based on DNA analysis, in the early 21st century have revealed new relationships among mammal families. Classification systems based on molecular studies reveal three major groups or lineages of placental mammals, Afrotheria, Xenarthra, and Boreoeutheria. which diverged from early common ancestors in the Cretaceous.
Order Tetraodontiformes, including the filefishes and pufferfish; Order Pleuronectiformes, the flatfishes; Order Scorpaeniformes, including scorpionfishes and the sculpins; Order Perciformes 40% of all fish including anabantids, centrarchids (incl. bass and sunfish), cichlids, gobies, gouramis, mackerel, perches, scats, whiting, wrasses