Untamed Science
Untamed Science: Phylum Chordata
Learn about the characteristics, classification, and phylogeny that make the Phylum Chordata, a distinct animal classification group. See examples and photos of different species of chordates.
BiologyWise
Biology Wise: Characteristics of Arthropods
Describes general characteristics of Arthropoda and features of the different animal classes within this phylum.
Regents of the University of Michigan
Animal Diversity Web: Phylum Arthropoda
This general overview of the arthropod phylum, which includes insects and arachnids, looks at such topics as body symmetry, appendages, movement, respiratory and nervous systems, and reproduction.
Palomar Community College District
Palomar College: Kingdom to Subphylum
The highest category of taxonomic classification is the kingdom. This website from Palomar College presents the five kingdoms in an easy-to-read chart and discusses the Animalia and Plantae kingdoms in depth. After reading through the...