Describes common characteristics, original and current locations, convergent evolution, and similar unrelated species.

Provides photographs, sketches, specimens, and classification.

Contains information on families. With description.

Information includes habitat, adaptations and characteristics, behavior, diet, and species account.

Examines classification change, characteristics, habitats, diets, and links to three species reports.

Overview on profile, trends and status. With local names, references and pictures.

Contains information on physical description, member species and suborders.

Presents information on taxonomic classification and member species.

Provides data on classification. Includes links.

Contains information on member species, description and distribution. With pictures.

Lists taxonomic status and hierarchy, publications, comments, and off-site resources.

Gives synonyms, taxonomic status and hierarchy, references, comments, and additional resources.

Data on morphology and ecology. With trivia, photos and references.

Lists online references. With brief descriptions and pictures.

Discusses history of ancient and current member species.

Presents information on life history, ecology, systematics, and morphology.