Animalia 
I. Protozoa
i. Monera
Protamoebidae
Protomonadidae
Myxastridae
Foraminifera
ii. Endoplastica
Amoebidae
Infisoria flagellata
Infusoria ciliata
Gregarinidae
Acinetidae
Radiolaria
II. Metazoa Haeckel
A. Gastreae 
[We may, with Haeckel, term those animals which
pass through the Gastrula stage, the Gastraea]
i. Polystomata
Porifera = Spongida
ii. Monostomata
1. Archaeostomata
a.
Scolecimorpha
Rotifera
Turbellaria
Trematoda
Nematoidea
Hirudinea
Oligochaeta
b.
Coelenterata
Hydrozoa
Actinozoa
(Ctenophora)
2. Deuterostomata
a. Schizocoela
Annelida polychaeta
Gephyrea (?)
Arthropoda
b.
Enterocoela
Brachiopoda
Enteropneusta
Polyzoa (?)
Chaetognatha
Mollusca
Echinodermata
c.
Epicoela
Tunicata = Ascidioida
Vertebrata
B. Agastreae
(provisionally)
[probable as it may be that these are
Gastraea with aborted digestive cavities ...]
Cestoidea [...
so closely allied with the Trematoda ...]
Acanthocephala