Aves

• Passeriformes

  Largest order of birds comprising about half the known species; rooks; finches; sparrows;...

• Casuariiformes

  A ratite bird order: cassowaries and emus.

• Ratitae

  Used in former classifications to include all ratite bird orders.

• Struthioniformes

  A ratite bird order: ostriches and related extinct birds; known from the Pleistocene...

• Apterygiformes

  A ratite bird order: flightless ground birds having vestigial wings and long bills...

• Rheiformes

  A ratite bird order: birds intermediate in characteristics between ostriches and emus:...

• Aepyorniformes

  Huge extinct flightless birds: elephant birds.

• Dinornithiformes

  A ratite bird order: recently extinct flightless birds of New Zealand.

• Insessores

  A bird with feet adapted for perching (as on tree branches); this order is now generally...

Division Eubacteria

• Eubacteriales

  One of two usually recognized orders of true bacteria; Gram-positive spherical or...

• Pseudomonadales

  One of two usually recognized orders of true bacteria; Gram-negative spiral or spherical...

• Actinomycetales

  Filamentous or rod-shaped bacteria.

• Spirochaetales

  Higher bacteria; slender spiral rodlike forms.

• Rickettsiales

  Pleomorphic Gram-negative microorganisms.

• order Myxobacteria

  An order of higher bacteria.

• Mycoplasmatales

  Coextensive with the family Mycoplasmataceae.

Agnatha

• Cyclostomata

  Primitive jawless aquatic vertebrate: lampreys; hagfishes.

• Ostracodermi

  Extinct group of armored jawless vertebrates; taxonomy is not clear.

• Anaspida

  Extinct order of jawless vertebrates.

• Conodonta

  Extinct order of primitive vertebrates; the precise taxonomy is not clear; in some classifications...

Rhizopoda

• Foraminifera

  Foraminifers.

• Amoebida

  The animal order including amoebas.

• Testacea

  Testacean rhizopods.

Telosporidia

• Haemosporidia

  An order in the subclass Telosporidia.

• Coccidia

  An order in the subclass Telosporidia.

• Gregarinida

  An order in the subclass Telosporidia.

Cnidosporidia

• Actinomyxidia

  Parasites of worms.

• Mycrosporidia

  An order in the subclass Cnidosporidia.

• Myxosporidia

  An order in the subclass Cnidosporidia.

Ostracodermi

• Heterostraci

  Extinct group of armored jawless fishes or fish-like vertebrate; taxonomy is not c...

• Osteostraci

  Extinct group of armored fish-like vertebrates; taxonomy is not clear.

Cyclostomata

• Petromyzoniformes

  Lampreys as distinguished from hagfishes.

• Myxiniformes

  Hagfishes as distinguished from lampreys.

Zoomastigina

• Polymastigina

  Small usually parasitic flagellates.

• Hypermastigina

  Cellulose-producing flagellates.

Teleostei

• Malacopterygii

  An extensive group of teleost fishes having fins supported by flexible cartilaginous...

• Solenichthyes

  Bellows fishes; shrimpfishes; cornetfishes; pipefishes; small order of chiefly tropical...

Acanthopterygii

• Berycomorphi

  An order of spiny-finned fish in the superorder Acanthopterygii.

• Zeomorphi

  Dories.

Acnidosporidia

• Sarcosporidia

  Imperfectly known parasites of the muscles of vertebrates.

• Haplosporidia

  An order in the subclass Acnidosporidia.

Elasmobranchii

• Rajiformes

  Fish with dorsoventrally flattened bodies; includes: rays; skates; guitarfishes; saw...

• Torpediniformes

  Rays with bodies shaped like torpedoes.

Actinopoda

• Heliozoa

  Mostly freshwater protozoa.

• Radiolaria

  Marine protozoa.

Also contains

• Oscines

  Two names for the suborder of typical songbirds.

• Cypriniformes

  An order of animals including almost entirely freshwater fishes: characins; loaches;...

• Dinoflagellata

  In some classifications considered a phylum of the kingdom Protista; in others included...

• Fucales

  Coextensive with the family Fucaceae.

• Zygnematales

  Pond scums; desmids.