Tree of life

† = Extinct

Life

Eukarya

 * &mdash; Various protozoa
 * &mdash; most lobose s and s
 * &mdash;, , and various other protozoa
 * &mdash;, ,  (or cryptomonads), and
 * (or ) &mdash;, e, e, and s
 * (= Mesomycetozoea)
 * (animals)
 * (vertebrates, starfish, acorn worms)
 * (arthropods)
 * (mollusca)
 * (= Mesomycetozoea)
 * (animals)
 * (vertebrates, starfish, acorn worms)
 * (arthropods)
 * (mollusca)
 * (animals)
 * (vertebrates, starfish, acorn worms)
 * (arthropods)
 * (mollusca)
 * (vertebrates, starfish, acorn worms)
 * (arthropods)
 * (mollusca)
 * (vertebrates, starfish, acorn worms)
 * (arthropods)
 * (mollusca)
 * (vertebrates, starfish, acorn worms)
 * (arthropods)
 * (mollusca)
 * (vertebrates, starfish, acorn worms)
 * (arthropods)
 * (mollusca)
 * (arthropods)
 * (mollusca)
 * (mollusca)

Arthropods

 * † (extinct)
 * † (extinct)
 * † (extinct)
 * † (extinct)
 * † (extinct)
 * † (extinct)
 * † – trilobites (extinct)
 * – etc.
 * – blind crustaceans
 * – horseshoe shrimp
 * – s,, , etc.
 * – seed shrimp
 * – s, s,, etc.
 * – s, ns, etc.
 * – sea spiders
 * – s
 * – s
 * – sister group to millipedes
 * – resemble centipedes
 * –, etc.
 * – insects
 * – sea spiders
 * – s
 * – s
 * – sister group to millipedes
 * – resemble centipedes
 * –, etc.
 * – insects
 * –, etc.
 * – insects

Mollusca

 * &mdash; All the s and s including, s, , s, s,
 * &mdash; s, s, s, s, s
 * &mdash; chitons
 * a &mdash;, , , ,
 * &mdash; tusk shells
 * &mdash; worm-like organisms
 * &mdash;An ancient lineage of molluscs with cap-like shells
 * † &mdash; fossils; probable ancestors of bivalves
 * † &mdash; fossils; snail-like organisms such as 
 * &mdash; All the s and s including, s, , s, s,
 * &mdash; s, s, s, s, s
 * &mdash; chitons
 * a &mdash;, , , ,
 * &mdash; tusk shells
 * &mdash; worm-like organisms
 * &mdash;An ancient lineage of molluscs with cap-like shells
 * † &mdash; fossils; probable ancestors of bivalves
 * † &mdash; fossils; snail-like organisms such as 

Vertebrates

 * (acorn worms)
 * †a
 * (starfish)
 * (vertebrates)
 *  or (s and other jawless fishes)
 *  (vertebrates with jaws)
 * † (extinct armoured fishes)
 * (cartilaginous fishes)
 * † (extinct spiny "sharks")
 * Superclass  (bony vertebrates)
 * (ray-finned bony fishes)
 * (lobe-finned fishes, including the tetrapods)
 * (amphibians, some ancestral to the )- now a paraphyletic group
 * (mammals)
 * (reptiles and birds)
 * (reptiles)
 * (birds)
 * (mammals and the extinct mammal-like reptiles)
 * Eutherapsida
 * † ia
 * † ia
 * † ia
 * ia
 * ia
 * ia
 * ia
 * (reptiles and birds)
 * (reptiles)
 * (birds)
 * (mammals and the extinct mammal-like reptiles)
 * Eutherapsida
 * † ia
 * † ia
 * † ia
 * ia
 * ia
 * ia
 * ia
 * Eutherapsida
 * † ia
 * † ia
 * † ia
 * ia
 * ia
 * ia
 * ia
 * Eutherapsida
 * † ia
 * † ia
 * † ia
 * ia
 * ia
 * ia
 * ia
 * † ia
 * † ia
 * ia
 * ia
 * ia
 * ia
 * ia
 * ia
 * ia
 * ia

Reptiles and birds

 * (superorder)
 * ? (Turtles, s & terrapins)
 * various extinct clades
 * various extinct clades
 * various extinct clades
 * various extinct clades
 * various extinct clades
 * ia
 * (crocodilians)
 * (disputed as whether or )
 * (turtles)
 * various extinct clades
 * various extinct clades
 * various extinct clades
 * various extinct clades
 * various extinct clades
 * ia
 * (crocodilians)
 * (disputed as whether or )
 * (turtles)
 * various extinct clades
 * various extinct clades
 * various extinct clades
 * various extinct clades
 * various extinct clades
 * ia
 * (crocodilians)
 * (disputed as whether or )
 * (turtles)
 * various extinct clades
 * various extinct clades
 * ia
 * (crocodilians)
 * (disputed as whether or )
 * (turtles)
 * (disputed as whether or )
 * (turtles)
 * (turtles)



Mammals
(mammals)