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| Kingdom: | Animalia |
| animals |
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Multicellular heterotrophic eukaryotes comprise over 1.5 million living species. Most animals have blastula as one of the embryonic stages of development (fig 1).
Fig. 1. A general scheme of blastulation: 1- morula stage, 2- blastula stage (by Wikipedia community 2018)
Phylogeny of Animalia (Metazoa) (by Tree of Life Project 2018)
| Rank | Taxa |
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| Kingdom | Animalia | 14744 | 60808 | 180095 | 123345 | 6 (3098) | 0 (110) | ||
| Nested Taxa | |||||||||
| Phylum | Acanthocephala | ||||||||
| Phylum | Annelida |
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(7) | (1) | ||||
| Phylum | Arthropoda |
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1 (2989) | (106) | ||||
| Phylum | Brachiopoda | ||||||||
| Phylum | Bryozoa |
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(1) | |||||
| Phylum | Cephalorhyncha | ||||||||
| Phylum | Chaetognatha | ||||||||
| Phylum | Chordata |
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(82) | (3) | ||||
| Phylum | Cnidaria |
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| Phylum | Ctenophora |
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| Phylum | Cycliophora | ||||||||
| Phylum | Dicyemida | ||||||||
| Phylum | Echinodermata |
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| Phylum | Entoprocta | ||||||||
| Phylum | Gastrotricha | ||||||||
| Phylum | Gnathostomulida | ||||||||
| Phylum | Hemichordata | ||||||||
| Phylum | Micrognathozoa | ||||||||
| Phylum | Mollusca |
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2 (40) | (1) | ||||
| Phylum | Myxozoa | ||||||||
| Phylum | Nematoda |
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(1) | |||||
| Phylum | Nematomorpha |
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| Phylum | Nemertina | ||||||||
| Phylum | Onychophora | ||||||||
| Phylum | Orthonectida | ||||||||
| Phylum | Phoronida | ||||||||
| Phylum | Placozoa | ||||||||
| Phylum | Platyhelminthes |
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| Phylum | Porifera |
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(1) | |||||
| Phylum | Rotatoria |
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| Phylum | Sipunculida | ||||||||
| Phylum | Tardigrada | 3 (2) | |||||||
| Phylum | Xenacoelomorpha | ||||||||
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