门 |
涵义 |
名称 |
分类特征 |
种类 |
棘头动物门 |
Thorny headed worms |
Thorny-headed worms |
Reversible spiny proboscis |
7002756000000000000approx. 756 |
无腔动物门 |
Without gut |
Acoels |
No mouth or alimentary canal (alimentary canal = digestive tract in digestive system) |
|
环节动物门 |
Little ring |
Segmented worms |
生物体柔软,分节 |
700417000000000000017,000+ extant |
节肢动物门 |
Jointed foot |
Arthropods |
甲壳素外骨骼 |
70061134000000000001,134,000+ |
腕足动物门 |
Arm foot |
Lamp shells |
Lophophore,有肉茎 |
7002300000000000000300-500 extant |
外肛动物门 |
Moss animals |
Moss animals, sea mats |
Lophophore,没有肉茎,ciliated tentacles |
70035000000000000005,000 extant |
毛颚动物门 |
Longhair jaw |
Arrow worms |
在头和鳍的两边均有几丁质组成的尖刺 |
7002100000000000000approx. 100 extant |
脊索动物门 |
Cord |
Chordates |
Hollow dorsal nerve cord, 脊索, pharyngeal slits, endostyle, 肛门 |
7005100000000000000approx. 100,000+ |
刺胞动物门 |
Stinging nettle |
Coelenterates |
Nematocysts (stinging cells) |
7004110000000000000approx. 11,000 |
栉水母动物门 |
Comb bearer |
Comb jellies |
Eight "comb rows" of fused cilia |
7002100000000000000approx. 100 extant |
环口动物门 |
Wheel carrying |
Symbion |
Circular mouth surrounded by small cilia |
70003000000000000003+ |
棘皮动物门 |
Spiny skin |
Echinoderms |
Fivefold radial symmetry in living forms, mesodermal calcified spines |
7003700000000000000approx. 7,000 extant; approx. 13,000 extinct |
内肛动物门 |
Inside anus |
Goblet worm |
Anus inside ring of cilia |
7002150000000000000approx. 150 |
腹毛动物门 |
Hair stomach |
Meiofauna |
Two terminal adhesive tubes |
7002690000000000000approx. 690 |
颚胃动物门 |
Jaw orifice |
Jaw worms |
|
7002100000000000000approx. 100 |
半索动物门 |
Half cord |
Acorn worms, pterobranchs |
Stomochord in collar, pharyngeal slits |
7002100000000000000approx. 100 extant |
动吻动物门 |
Motion snout |
Mud dragons |
Eleven segments, each with a dorsal plate |
7002150000000000000approx. 150 |
铠甲动物门 |
Corset bearer |
Brush heads |
Umbrella-like scales at each end |
7002122000000000000approx. 122 |
微颚动物门 |
Tiny jaw animals |
— |
Accordion like extensible thorax |
70001000000000000001 |
软件动物门 |
Soft |
Mollusks / molluscs |
Muscular foot and mantle round shell |
7005112000000000000112,000[2] |
线虫动物门 |
Thread like |
Round worms |
Round cross section, keratin cuticle |
700480000000000000080,000–1,000,000 |
线形动物门 |
Thread form |
Horsehair worms |
|
7002320000000000000approx. 320 |
纽形动物门 |
A sea nymph |
Ribbon worms |
|
7003120000000000000approx. 1,200 |
有爪动物门 |
Claw bearer |
Velvet worms |
Legs tipped by chitinous claws |
7002200000000000000approx. 200 extant |
直泳虫门 |
Straight swim |
|
Single layer of ciliated cells surrounding a mass of sex cells |
7001200000000000000approx. 20 |
帚虫动物门 |
Zeus's mistress |
Horseshoe worms |
U-shaped gut |
700120000000000000020 |
扁盘动物门 |
Plate animals |
|
|
70001000000000000001 |
扁形动物门 |
Flat worms |
Flat worms |
|
7004250000000000000approx. 25,000[3] |
多孔动物门* |
Pore bearer |
Sponges |
Perforated interior wall |
70035000000000000005,000+ extant |
鳃曳动物门 |
Little Priapus |
|
|
700116000000000000016 |
菱形虫门 |
Lozenge animal |
— |
Single axial cell surrounded by ciliated cells |
700175000000000000075 |
轮形动物门 |
Wheel bearer |
Rotifers |
Anterior crown of cilia |
7003200000000000000approx. 2,000 |
星虫动物门 |
Small tube |
Peanut worms |
Mouth surrounded by invertible tentacles |
7002144000000000000144–320 |
缓步动物门 |
Slow step |
Water bears |
Four segmented body and head |
70031000000000000001,000+ |
异涡动物门 |
Strange flatworm |
— |
Ciliated deuterostome |
70002000000000000002 |
Total: 35 |
|
|
|
2,000,000- |