Ontogeny repeats phylogeny.

There is no evidence of the existence of gills during embryogenesis of mammals.

Stem cells are specialized cells.

All plant and animal cells are totipotent.

Warning colouration

Camouflage

Mullerian mimicry

Social insects

Homologous organs onl

Homologous and vestigial organs

Homologous and analogous organs

Analogous and vestigial organs

Radiation of reptiles and origin of mammal like reptiles

Flowering plants and first dinosaurs appear

Gymnosperms are dominant plants and first birds appear

Dinosaurs become extinct and angiosperms appear