Water Dwellers

Cambrian Period

 * Anomalocaris
 * Pikaia
 * Opabinia
 * Brachiopods
 * Paradoxides
 * Jellyfish (cameo)

Ordovician Period

 * Cameroceras (Giant Orthocone)
 * Megalograptus (Sea Scorpion or Eurypterid)
 * Crinoids
 * Future Fungus
 * Horseshoe Crabs

Silurian Period

 * Silurian Scorpions (Scorpions)
 * Pterygotus
 * Brontoscorpio
 * Eurypterus

Devonian Period

 * Cephalaspis
 * Dunkleosteus
 * Ammonite
 * Strethacanthus
 * Cladoselache
 * Ichthyostega