On the origin of phyla

The nature of phyla

Design elements in the bodyplans of phyla

Development and bodyplans

Morphological and molecular phylogenies

The fossil record

The metazoan phyla

Prebilaterians and earliest crown bilaterians

Protostomes: the ecdysozoa

Protostomes: lophotrochozoa I: eutrochozoans

Protostomes: lophotrochozoa 2: lophophorates

Protostomes: paracoelomates

Deuterostomes

Evolution of the phyla

Phanerozoic history of phyla

Metazoan evolution during the prelude to the Cambrian explosion

Metazoan evolution during the Cambrian explosion and its aftermath.