Haeckel’s Classification of the Animal World

Unicellular animals (Protozoa)

1. Unnucleated Bacteria
Protamæbæ Monera

2. Nucleated a. Rhizopoda Amœbina
Radiolaria

b. Infusoria Flagellata
Ciliata

3. Cell-colonies Catallacta
Blastæada

Unicellular animals (Protozoa)

I
Cœlenterata,
or Zoophytes.
Animals without
body-cavity,
blood, or anus. a. Gastræads Gastremaria
Cyemaria

b. Sponges Protospongiæ
Metaspongiæ

c. Cnidaria
(stinging animals) Hydrozoa
Polyps
Medusæ

d. Platodes
(flat-worms) Platodaria
Turbullaria
Trematoda
Cestoda

II
Cœlomaria or
Bilaterals.
Animals with
body-cavity and
anus, and generally
blood. a. Vermalia
(worm-like) Rotatoria
Strongylaria
Prosopygia
Frontonia

b. Molluscs Cochlides
Conchades
Teuthodes

c. Articulates Annelida
Crustacea
Tracheata

d. Echinoderms Monorchonia
Pentorchonia

e. Tunicates Copelata
Ascidiæ
Thalidiæ

f. Vertebrates I. Acrania-Lancelet
(without skull)
II. Craniota
(with skull)
a. Cyclostomes
(“round-mouthed”)

b. Fishes Selachii
Ganoids
Teleosts
Dipneusts

c. Amphibia
d. Reptiles
e. Birds

f. Mammal Monotremes
Marsupials
Placentals:
Rodents
Edentates
Ungulates
Cetacea
Sirenia
Insectivora
Cheiroptera
Carnassia
Primates