112 The Classification of Protozoa 



In 1936 a list of subdivisions of the Protozoa, as generally favored 

 by a number of American protozoologists, was prepared for the American 

 Association for the Advancement of Science (18). This list of names, with 

 their authors, illustrates the multiple origins of current systems. 



Phylum Protozoa Goldfuss 1820 em. von Siebold 1845 

 Subphylum 1. Plasmodroma Dofiein 1901 

 Class 1. Mastigophoia Diesing 18(55. 



Subclass 1. Phytomastigophora Calkins 1909 

 Order 1. Chrysomonadida Stein 1878 

 Order 2. Heterochlorida Pascher 1912 

 Order 3. Cryptomonadida Stein 1878 

 Order 4. Dinoflagellida Butschli 1885 

 Order 5. Euglenida Blochmann 1895 

 Order 6. Chloromonadida Klebs 1892 

 Order 7. Phytomonadida Blochmann 1895 

 Subclass 2. Zoomastigophora Calkins 1909 

 Order 1. Pantastomatida Minchin 1912 

 Order 2. Protomastigida Klebs 1893 

 Order 3. Polymastigida Klebs 1893 

 Order 4. Hypermastigida Grassi 1911 

 Class 2. Sarcodina Hertwig and Lesser 1874 em. Biitschli 1880 

 Subclass 1. Rhizopoda von Siebold 1845 



Order 1. Amoebida ClaparMe and Lachmann 1858 

 Order 2. Proteomyxa Lankester 1885 

 Order 3. Testacea Schultze 1854 

 Order 4. Foraminifera d'Orbigny 1826 

 Order 5. Mycetozoa de Bary 1859 

 Subclass 2. Actinopoda Calkins 1909 

 Order 1. Heliozoa Haeckel 1866 

 Order 2. Radiolaria Haeckel 1866 

 Class 3. Sporozoa Leuckart 1879 



Subclass 1. Telosporidia Schaudinn 1900 

 Order 1. Gregarinida Lankester 1866 

 Order 2. Coccidiomorpha Doflein 1901 

 Suborder 1. Coccidia Leuckart 1879 

 Suborder 2. Haemosporidia Danilewsky 1886 

 Subclass 2. Cnidosporidia Dofiein 1901 

 Order 1. Myxosporidia Biitschli 1881 

 Order 2. Actinomyxidia Stole 1899 

 Order 3. Microsporidia Balbiani 1883 

 Subclass 3. Sarcosporidia Balbiani 1882 

 Order 1. Sarcosporidia Balbiani 1882 

 Order 2. Globidia Badudieri 1932 

 Subclass 4. Haplosporidia Caullery and Mesnil 1899 

 Subphylum 2. Ciliophora Doflein 1901 

 Class 1. Ciliata Perty 1852 



Subclass 1. Protociliata Metcalf 1918 



Order 1. Opalinata Stein 1867 

 Subclass 2. Euciliata Metcalf 1918 

 Order 1. Holotrichida Stein 1859 



Suborder 1. Gymnostomina Biitschli 1889 

 Suborder 2. Trichostomina Biitschli 1889 

 Suborder 3. Astomina Minchin 1912 

 Order 2. Spirotrichida Biitschli 1889 

 Suborder 1. Heterotrichina Stein 1859 



