Miscellaneous Lists

Animal Kingdom Species Counts (by Phylum)

 Phylum

 Common Name(s)

 Number of Species
 Porifera  Sponges  5,000
 Placazoa  placazoans  1
 Cnidaria  Jellyfishes, anemones & corals  9,000
 Ctenophora  Comb jellies, sea gooseberries  80
 Kinorhyncha  Mud dragons  150
 Priapulida  Priapus worms  17
 Loricifera  loriciferans  100
 Nematomorpha  Horsehair worms  230
 Nematoda  Round worms  20,000
 Onychophora  Velvet worms  80
 Tardigrada  Water bears  400
 Arthropoda  Spiders, crustaceans, insects, etc  1,230,000+
 Chelicerata
 Horseshoe crabs, spiders, mites, scorpions
 65,000
 Pycnogonida
 Sea spiders
 1,000
 Crustacea
 Lobsters, crabs, shrimp, barnacles
 50,000
 Myriapoda
 Millipedes, centipedes, etc.
 13,120
 Insecta
 Insects
 1,100,000+
 Chaetognatha  Arrow worms  200
 Sipuncula  Peanut worms  320
 Acanthocephala  Spiny-headed worms  500
 Gastrotricha  gastrotrichs  430
 Rotifera  Rotifers  1,800
 Cycliophora  cycliophores  1
 Platyhelminthes  Flatworms  20,000
 Nemertea  Ribbon worms  900
 Bryozoa  Moss animals  4,150
 Phoronida  Horseshoe worms  12
 Brachiopoda  Lamp shells  300
 Mollusca  Clams, snails, octopi & squid  100,000
 Caudofoveata
 
 70
 Solanogastres
 
 250
 Polyplacophora
 Chitons
 600
 Monoplacophora
 
 12
 Scaphopoda
 Tusk shells
 350
 Bivalvia
 Clams, mussels, oysters
 8,000
 Cephalopoda
Octopi, Squid, Cuttlefish, Nautiloids, Vampire squid 
 650
 Gastropoda
 Snails, limpets, slugs, nudibranchs
 90,000
 Annelida  Segmented worms  15,000
 Pterobranchia  pterobranchs  22
 Echinodermata  Sea stars, sea urchins, sea cucumbers & sea lillies  7,000
 Enteropneusta  Acorn worms  70
 Chordata  Sea squirts, lancelets & vertebrates  52,675
 Urochordata
 Sea squirts
 1,250
 Cephalochordata
 Lancelets
 25
 Vertebrata**
 Fishes, amphibians, reptiles, birds, mammals
 51,400
     
 

 GRAND TOTAL (approx)
 1,470,000 species

**= More detailed Table to follow

Notes: These numbers are obviously approximate and are constantly under revision as new discoveries are made, and classifications are changed. The number of insects is a conservatively low estimate

Principal source: "The Variety of Life" by Colin Tudge, Oxford University Press, 2000

Date of this page version: 2-8-01

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