Acanthoecida is an order of Choanoflagellates belonging to the class Choanoflagellatea.[1] It is a type of heterotrophic nanoflagellate that feeds on suspended particles. 
Families:[1] 
 - Acanthoecidae Norris, 1965
  - Stephanoecidae Leadbeater in Nitsche et al., 2011
 
 References
  External links
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 - Domain
  - Archaea
  - Bacteria
  - Eukaryota
  - (major groups
  - Metamonada
  - Discoba
  - Diaphoretickes 
- Hacrobia 
- Cryptista
 
   - Rhizaria
  - Alveolata
  - Stramenopiles
  - Plants
 
   - Amorphea 
- Amoebozoa
  - Opisthokonta 
- Animals
  - Fungi
  - Mesomycetozoea)
 
  
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 | | Cristidiscoidea |  | 
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 | Fungi | Rozellomyceta  | | Rozellomycota |  | 
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  | | Morellosporales |  - Mitosporidiaceae
  - Morellosporaceae
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 | Nucleophagales |  | 
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 | Paramicrosporidiales |  | 
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  |  Microsporidia  | | Chytridiopsidea |  | 
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 | Metchnikovellea | | Metchnikovellida |  - Amphiacanthidae
  - Metchnikovellidae
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 | Microsporea |  - Abelsporidae
  - Burenelloidea
  - Burkeidae
  - Cougourdellidae
  - Cylindrosporidae
  - Duboscqiidae
  - Golbergiidae
  - Microfilidae
  - Neonosemoidiidae
  - Pleistosporidiidae
  - Pseudopleistophoridae
  - Striatosporidae
  - Telomyxidae
  - Toxoglugeidae
     |  | Amblyosporida |  - Amblyosporidae
  - Caudosporidae
  - Gurleyidae
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 | Glugeida |  - Facilisporidae
  - Glugeidae
  - Myosporidae
  - Pereziidae
  - Pleistophoridae
  - Spragueidae
  - Thelohaniidae
  - Tuzetiidae
  - Unikaryonidae
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 | Neopereziida |  - Fibrillasporidae
  - Janacekiidae
  - Neopereziidae
  - Tubulinosematidae
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 | Nosematida |  - Encephalitozoonidae
  - Enterocytozoonidae
  - Heterovesiculidae
  - Mrazekiidae
  - Nosematidae
  - Ordosporidae
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 | Ovavesiculida |  | 
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  |  | Aphelidiomyceta |  | 
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 Eumycota (True Fungi) |  | 
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  Taxon identifiers  | 
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| Acanthoecida |  | 
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