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Skip Navigation LinksLife Forms    Animal - Animalia    Jointed Legged Animals - Arthropoda
Phylum Arthropoda - Jointed Legged Animals
Trilobites

Trilobita
Crabs - Horeshoe

Xiphosura
Spiders And Scorpions

Arachnidae
Crabs And Allies

Crustacea
Centipedes

Chilopoda
Millipedes

Diplopoda
Insects

Insecta

Narrative

Bilateral symetry, multi-segmented, jointed legs, frequently antenna   Spread disease, destroy crops, fertilize crops, human food, million or more species   Jointed Legged Animals (Phylum Arthropoda) make up the largest phylum. There are probably more than one million different species of arthropods known to science. It is also the most successful animal phylum in terms of the total number of living organisms.

Butterflies, beetles, grasshoppers, various insects, spiders, and crabs are well-known arthropods.

The phylum is usually broken into the following five main classes:
Arachnida: - Spiders and Scorpions
Crustacea: - Crabs and Crayfish
Chilopoda: - Centipedes
Diplopoda: - Millipedes
Insecta: - Insects

There are several other rare classes in the arthropods that should be mentioned. A more formal list is as follows:

Sub Phylum Chelicerata
C. Arachnida: - Spiders and scorpions
C. Pycnogonida: - Sea spiders (500 species)
C. Merostomata: - Mostly fossil species

Sub Phylum Mandibulata
C. Crustacea: - Crabs and crayfish

Myriapod Group
C. Chilopoda: - Centipedes
C. Diplopoda: - Millipedes
C. Pauropoda: - Tiny millipede-like
C. Symphyla: - Garden centipedes

Insect Group
C. Insecta: - Insects

The above list does not include some extinct classes of Arthropods such as the Trilobites.

Taxonomy

Latin

English
Kingdom Animalia Animal
Phylum Arthropoda Jointed Legged Animals
Class
Order
Family
SubFamily

References


Title Author Comments
Audubon Society Field Guide to North American Insects and Spiders Milne, Lorus and Margery The 702 color illustrations of living specimens are excellent. Spiders, scorpions, and Insects are covered. With a good coverage of arthropods, this book should be in any library that is used for identification. The text also mentions related species.
Freshwater Macroinvertebrates of Northeastern North America Peckarsky, Barbara This work serves as an excellent overview of the aquatic insects of north east North America. Also crustacea and Mollusks are included. They keys are useful for identification purposes.
Rare and Endangered Biota of Florida - Volume IV Invertebrates Deyrup, Mark This detailed work covers the mollusks and arthropods of Florida that are rare or endangered. Each species is described along with its range and habitat. Detailed distribution maps are also included. Almost 800 pages of detailed information make this a truly excellent work.
Endangered Ones, The Cox, James A. A detailed analyses as of l975 of the various animals facing extinction. 220 pages of excellent information.
Fresh Water Invertebrates of the United States Pennak, Robert W This excellent reference covers numerous phyla from protozoa to mollusca found in fresh water in the United States.
Illustrated Encyclopedia of the Prehistoric World Palmer, Dr. Douglas This excellent book is a must for the nature loving families of the world. It begins with a story of the earths geology through the various time periods, but the most interesting part is the survey by the different animal groups. Most of us are familiar with the dinosaurs, but when one is introduced again to the dinosaurs in conjunction with a survey of the early fish, reptiles, birds, and mammals one can not help but be impressed with many of the non-dinosaur animals that preceded modern times. For example, one is introduced to the Indricotherium in the Rhinoceros group that had a weight of 33 tons (four times the weight of the heaviest modern elephant). Also, one is impressed with the size of some of the early birds such as Osteodontornis with a wingspan of up to 20 feet.
Larousse Encyclopedia of the Animal World Various This 640 page book covers the phyla in the animal kingdom, including a good survey of sponges, coelenterates, worms, misc. phyla, arthropods and chordates. With numerous pictures and diagrams, this work gives a good understanding of the taxonomy of the animal kingdom. The first half of the book covers the lower phyla, and the last half concentrates on the chordates. Numerous important species are described and pictured.
Marine Invertebrates and Plants of the Living Reef Dr. Patrick L. Colin This book gives a nice survey of the marine invertebrates of the western tropical Atlantic Ocean from Florida south through the Caribbean. This book contains over 430 color photographs.
Photographic Guide to Sea and Shore Life of Britain and North-west Europe Gibson, Ray Although a few plant species are covered, the strength of this book lies in the animal kingdom coverage. With sponges, anemones, worms, crabs and shrimps, mollusks and starfish there is a good coverage. A few fish are also mentioned.
Seashore Animals of the Southeast Ruppert, Edward E. This work serves as an introduction to the invertebrates of the shallow marine areas near the south eastern United States.