| 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+
|
