Animal Phyla/Table
Appearance
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[1] |
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[2] | |
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- |
References
[edit | edit source]- ↑ Feldkamp, S. (2002) Modern Biology. Holt, Rinehart, and Winston, USA. (pp. 725)
- ↑ Species Register. "Flatworms - Phylum Platyhelminthes". Marine Discovery Centres. Retrieved 2007-04-09.