Eras
-----
Cretaceous
Permian
Silurian
Pennsylvanian
Jurassic
Cambrian
Species
-----------
Humans
Amphibians
Ginkos
Animals with shells
Mammals
Flowering plants
Match them up please? One era per species
Eras
-----
Cretaceous
Permian
Silurian
Pennsylvanian
Jurassic
Cambrian
Species
-----------
Humans
Amphibians
Ginkos
Animals with shells
Mammals
Flowering plants
Match them up please? One era per species