Vertebrata

• Aves

  (ornithology) the class of birds.

• amphibia

  The class of vertebrates that live on land but breed in water; frogs; toads; newts; salamanders;...

• Agnatha

  Superclass of eel-shaped chordates lacking jaws and pelvic fins: lampreys; hagfishes; some...

• Reptilia

  Class of cold-blooded air-breathing vertebrates with completely ossified skeleton and a...

• Chondrichthyes

  Cartilaginous fishes.

• Gnathostomata

  Comprising all vertebrates with upper and lower jaws.

• Placodermi

  Extinct group of bony-plated fishes with primitive jaws.

Arthropoda

• Chelicerata

  Spiders; scorpions; horseshoe crabs.

• Chilopoda

  Arthropods having the trunk composed of numerous somites each bearing one pair of legs:...

• Symphyla

  Small class of minute arthropods; unimportant except for the garden centipede.

• Tardigrada

  In some classifications considered a separate phylum: microscopic arachnid-like invertebrates...

• Diplopoda

  Arthropods having the body composed of numerous double somites each with two pairs of...

• superclass Myriapoda

  Used in some classifications to encompass the millipedes (Diplopoda) and centipedes...

• Pauropoda

  An obscure class of minute arthropods with branched antennae and 8 to 10 pairs of leg...

Reptilia

• Archosauria

  A large subclass of diapsid reptiles including: crocodiles; alligators; dinosaurs; pterosaurs;...

• Synapsida

  Extinct reptiles of the Permian to Jurassic considered ancestral to mammals.

• Anapsida

  Oldest known reptiles; turtles and extinct Permian forms.

• Lepidosauria

  Diapsid reptiles: lizards; snakes; tuataras.

Sporozoa

• Sporozoa

  Strictly parasitic protozoans that are usually immobile; includes plasmodia and coccidia...

• Telosporidia

  Parasitic sporozoans that form spores containing one or more infective sporozoites.

• Cnidosporidia

  Single-host parasites of lower vertebrates and invertebrates.

• Acnidosporidia

  A subclass of Sporozoa.

Protozoa

• Ciliata

  Class of protozoa having cilia or hairlike appendages on part or all of the surface during...

• Mastigophora

  Protozoa having flagella.

• Sarcodina

  Characterized by the formation of pseudopods for locomotion and taking food: Actinopoda;...

Urochordata

• Ascidiaceae

  Sometimes classified as an order: sea squirts.

• Thaliacea

  Small class of free-swimming tunicates; sometimes classified as an order.

• Larvacea

  Small free-swimming tunicates; sometimes classified as an order.

Chrysophyta

• Bacillariophyceae

  Marine and freshwater eukaryotic algae: diatoms.

• Chrysophyceae

  All the yellow-green algae having flagella of unequal length.

• Xanthophyceae

  Yellow-green algae.

Chlorophyta

• Chlorophyceae

  Algae distinguished chiefly by having flagella and a clear green color, their chlorophyll...

• Charophyceae

  In some classifications: contains only the order Charales.

• Ulvophyceae

  Alternative name for the class Chlorophyceae in some classifications.

Mastigophora

• Zoomastigina

  In some classifications considered a phylum of the kingdom Protista; holozoic or saprozoic...

• Phytomastigina

  Plantlike flagellates containing chlorophyll; often considered unicellular algae.

Sarcodina

• Rhizopoda

  Creeping protozoans: amoebas and foraminifers.

• Actinopoda

  Heliozoans; radiolarians.

Chondrichthyes

• Elasmobranchii

  Sharks; rays; dogfishes; skates.

• Holocephali

  Chimaeras and extinct forms.

Phaeophyta

• Phaeophyceae

  Brown algae; mostly marine and littoral eukaryotic algae.

• Cyclosporeae

  In more recent classifications superseded by the order Fucales.

Also contains

• Arachnida

  A large class of arthropods including spiders and ticks and scorpions and daddy longlegs;...

• Archaeornithes

  Primitive reptile-like fossil birds of the Jurassic or early Cretaceous.

• Rhodophyceae

  Coextensive with the Rhodophyta: red algae.

• class Cyanobacteria

  Photosynthetic bacteria found in fresh and salt water, having chlorophyll a...

• Infusoria

  In some recent classifications, coextensive with the Ciliata: minute organisms found in...

• Cryptophyceae

  Motile usually brownish-green protozoa-like algae.

• Euglenophyceae

  Coextensive with the division Euglenophyta.

• Schizomycetes

  A former classification.