23331212
[Worms] (longitudinal axis, gut, bilateral symmetry)
- 0 Hegel's 'System of Science'
- 1 Logic (Thinking of Thinking, Science of Science)
- 2 Nature (science of matter)
- 3 Spirit/Mind (Science of humanities)
- 21 Mechanics
- 22 Physics (including Chemistry)
- 23 Organism / Life (Subjectivity)
- 231 The Earth (Geology)
- 232 Plant life (biology of the vegetal)
- 233 Animal life (biology of the animal)
- 2331 Shaping (metabolism)
- 2332 Appropriation of the outside world (assimilation)
- 2333 Genus process of the animals (reproduction)
- 23331 Special animal species
- 23332 Stimulus and effect (inappropriateness to the genus)
- 23333 Death and birth
- 233311 General type of animal
- 233312 Genus and species (Zoology)
- 233313 Single living being (struggle for existence)
- 2333121 Animals without articulation (no skeleton)
- 2333122 Articulated animals (arthropods: exoskeleton)
- 2333123 Vertebrates and their precursors (deuterostomes, internal skeleton, red blood)
- 23331211 [Primitive animals] (tissue without organs)
- 23331212 [Worms] (longitudinal axis, gut, bilateral symmetry)
- 23331213 [Mollusks] (Mollusks)
- 233312121 [Flatworms] (gut without anus: turbellarians, flukes, tapeworms)
- 233312122 [Roundworms] (continuous gut: nematodes, rotifers)
- 233312123 [Segmented worms] (external segmentation: earthworm, leech, bristle worms)