Animal - Origin and fossil record - Article Index

Encyclopedia - Animal: Encyclopedia - Animal
Animals are a major group of organisms, classified as the kingdom Animalia or Metazoa. In general they are multicellular, capable of loco...   » Read the article

Encyclopedia - Animal: Encyclopedia Ii - Animal - Origin And Fossil Record
Animals are generally considered to have evolved from flagellate protozoa. Their closest living relatives are the choanoflagellates, coll...   » Read the article

Encyclopedia - Animal: Encyclopedia Ii - Animal - Groups Of Animals
The sponges (Porifera) diverged from other animals early. As mentioned, they lack the complex organization found in most other phyla. The...   » Read the article

Encyclopedia - Animal: Encyclopedia Ii - Animal - Examples
Some well-known types of animals, listed by their common names: alligator alpaca ant antelope badger bat bear bee beetle bird bison butt...   » Read the article

Encyclopedia - Animal: Encyclopedia Ii - Animal - History Of Classification
Aristotle divided the living world between animals and plants, and this was followed by Carolus Linnaeus in the first hierarchical classi...   » Read the article

Encyclopedia - Animal: Encyclopedia Ii - Animal - Characteristics
Aristotle divided the living world between animals and plants, and this was followed by Carolus Linnaeus in the first hierarchical classi...   » Read the article

Encyclopedia - Animal: Encyclopedia Ii - Animal - Structure
With a few exceptions, most notably the sponges (Phylum Porifera), animals have bodies differentiated into separate tissues. These includ...   » Read the article

Encyclopedia - Animal: Encyclopedia Ii - Animal - Reproduction And Development
Nearly all animals undergo some form of sexual reproduction. Adults are diploid or occasionally polyploid. They have a few specialized re...   » Read the article