# Stefn (līfcræft)

Se stefn (n.eng. *phylum*) is gaderung gebrocen in þǣre endebyrdunge līfes, þe of þǣm Grēciscan *phylum* genumen ƿæs.

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| Þis geƿrit hæfþ ƿordcƿide on Nīƿenglisce. |

## Getalu dēorstefna

|  |  |  |  |  |
| --- | --- | --- | --- | --- |
| **Stefn** | **Mǣnung** | **Gemǣne nama** | **Distinguishing characteristics** | **Cynn āscrifen** |
| Acanthocephala | Þornighēafod | Þorny-headed ƿyrmas | Eversible spiny proboscis | ymbe 850 |
| Acoelomorpha | Without gut | — | No mouth or alimentary canal |  |
| Annelida | Little ring | Segmented worms | Multiple circular segments | ymbe 15,000 |
| Arthropoda | Jointed foot | Arthropods | Chitin exoskeleton | 1,134,000+ |
| Brachiopoda | Arm foot | Lamp shells | Lophophore and pedicle | betƿēonan 300 and 500 extant |
| Bryozoa | Moss animals | Moss animals, sea mats | Lophophore, no pedicle, ciliated tentacles | ymbe 5,000 libbendra cynna |
| Chaetognatha | Longhair jaw | Arrow worms | Chitinous spines either side of head, fins | about 100 modern species |
| Chordata | Cord | Chordates | Hollow dorsal nervous chord | 63,000+ |
| Cnidaria | Stinging nettle | Coelenterates | Nematocysts (stinging cells) | ymbe 10,000 |
| Ctenophora | Comb bearer | Comb jellies | Eight "comb rows" of fused cilia | ymbe 100 gengra cynna |
| Cycliophora | Wheel carrying | *Symbion* | Circular mouth surrounded by small cilia | at least 3 |
| Echinodermata | Spiny skin | — | Five-fold radial symmetry, mesodermal calcified spines | ymbe 7,000 libbendra cynna and 13,000 dēadra |
| Echiura | Spine tail | Spoon worms | Set of hooks at posterior end | ymbe 140 |
| Entoprocta | Innlic ears | Goblet worm | Anus inside ring of cilia | ymbe 150 |
| Gastrotricha | Hair stomach | Meiofauna | Two terminal adhesive tubes | ymbe 450 |
| Gnathostomulida | Jaw orifice | Jaw worms |  |  |
| Hemichordata | Half cord | Acorn worms | Stomochord in collar | ymbe 100 living species |
| Kinorhyncha | Motion snout | Mud dragons | Eleven segments, each with a dorsal plate | ymbe 150 |
| Loricifera | Corset bearer | Brush heads | Umbrella-like scales at each end | ymbe 21 |
| Micrognathozoa | Tiny jaw animals | — | Accordion like extensible thorax | 1 |
| Mollusca | Thin shell | Mollusks / molluscs | Muscular foot and mantle round shell | ymbe 70,000 |
| Myxozoa | Slime animals | — | Polar capsules resembling nematocysts | at least 12,000 |
| Nematoda | Þrǣdlic | Round worms | Round cross section, keratin cuticle | ofer 20,000 |
| Nematomorpha | Thread form | Horsehair worms |  | about 320 |
| Nemertea | A sea nymph | Ribbon worms |  | ymbe 1200 |
| Onychophora | Claw bearer | Velvet worms | Legs tipped by chitinous claws | ymbe 110 modern |
| Orthonectida | Straight swim |  |  | ymbe 20 |
| Phoronida | Zeus' mistress | Horsscōh ƿyrmas | U-shaped gut | 20 |
| Placozoa | Tubular animals |  |  | 1 |
| Platyhelminthes | Flat worms | Flat worms |  | ymbe 25,000 |
| Porifera | Pore bearer | Spyncgan | Perforated interior wall | ofer 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 | Hƿēolberend | Rotifers | Anterior crown of cilia | ymbe 2000 |
| Sipuncula | Small tube | Peanut worms | Mouth surrounded by invertible tentacles | 144-320 |
| Tardigrada | Slow step | Water bears | Four segmented body and head | ymbe 750 |
| Xenoturbellida | Strange flatworm | — | Ciliated deuterostome | 2 |
| **TOTAL** |  |  |  | **1,375,000+** |