Animal Phyla/Table

Phylum	Meaning	Group	Distinguishing characteristics	Species described
Acanthocephala	Thorny head	Thorny-headed worms	Reversible spiny proboscis	about 1,151
Acoelomorpha	Without gut	Acoels	No mouth or alimentary canal
Annelida	Little ring	Segmented worms	Multiple circular segments	about 15,000 modern
Arthropoda	Jointed foot	Arthropods	Chitin exoskeleton	1,134,000+
Brachiopoda	Arm foot	Lamp shells	Lophophore and pedicle	between 300 and 500 extant
Bryozoa	Moss animals	Moss animals, sea mats	Lophophore, no pedicle, ciliated tentacles	about 5,000 living species
Chaetognatha	Longhair jaw	Arrow worms	Chitinous spines either side of head, fins	about 100 modern species
Chordata	Cord	Chordates	Hollow dorsal nervous chord	about 100,000+
Cnidaria	Stinging nettle	Coelenterates	Nematocysts (stinging cells)	about 11,000
Ctenophora	Comb bearer	Comb jellies	Eight "comb rows" of fused cilia	about 100 modern species
Cycliophora	Wheel carrying	Symbion	Circular mouth surrounded by small cilia	at least 3
Echinodermata	Spiny skin	Echinoderms	Five-fold radial symmetry, mesodermal layer, calcified spines	about 7,000 living species and 13,000 extinct ones
Echiura	Spine tail	Spoon worms	Set of hooks at posterior end	about 140
Entoprocta	Inside anus	Goblet worm	Anus inside ring of cilia	about 150
Gastrotricha	Hair stomach	Meiofauna	Two terminal adhesive tubes	about 690
Gnathostomulida	Jaw orifice	Jaw worms		about 100
Hemichordata	Half cord	Acorn worms	Stomochord in collar	about 100 living species
Kinorhyncha	Motion snout	Mud dragons	Eleven segments, each with a dorsal plate	about 150
Loricifera	Corset bearer	Brush heads	Umbrella-like scales at each end	about 122
Mesozoa	Middle animals	Mesozoans	Somatoderm of ciliated cells surrounding reproductive cell(s)
Micrognathozoa	Tiny jaw animals	—	Accordion like extensible thorax	1
Mollusca	Thin shell	Mollusks / molluscs	Muscular foot and Mantle, round shell	112,000
Myxozoa	Slime animals		Polar capsules resembling nematocysts	13,000+
Nematoda	Thread like	Round worms	Round cross section, keratin, cuticle	80 000 - 1 million
Nematomorpha	Thread form	Horsehair worms		about 320
Nemertea	A sea nymph	Ribbon worms		about 1200
Onychophora	Claw bearer	Velvet worms	Legs tipped by chitinous claws	about 200 modern
Orthonectida	Straight swim			about 20
Phoronida	Zeus' mistress	Horseshoe worms	U-shaped gut	20
Placozoa	Plate animals			1
Platyhelminthes	Flat worms	Flat worms		about 25,000
Porifera	Pore bearer	Sponges	Perforated interior wall	over 5,000 modern
Priapulida	Penis	Priapulid worms	Retractable proboscis surrounded by papillae	17
Rhombozoa	Lozenge animal	—	Single axial cell surrounded by ciliated cells	75
Rotifera	Wheel bearer	Rotifers	Anterior crown of cilia	about 2000
Sipuncula	Small tube	Peanut worms	Mouth surrounded by invertible tentacles	144-320
Tardigrada	Slow step	Water bears	Four segmented body and head	1,000+
Xenoturbellida	Strange flatworm	—	Ciliated deuterostome	2
TOTAL				2,000,000-