Protostomes v.s. Deuterostomes

Protostomes Development (mouth first then anus)
+Determinate Cleavage mosaic development
+Spiral cleavage
+Schizocoelic coelom: coelom forms by spliting of the mesoderm
+Blastopore forms mouth

Deuterostomes Development (anus first then mouth)
+Indeterminate Cleavage regulative development
+Radial cleavage
+Enterocoelic coelom: coelom forms as outpouchings of guts
+Blastopore forms anus

Source :http://biology.unm.edu/ccouncil/Biology_203/Images/Protostomes/protovdeutro.jpeg

Source: Professor Blake Barron's lecture