africa is rich in triassic and lower jurassic dinosaurs. african dinosaurs from these time periods include "syntarsus", "dracovenator", "melanorosaurus", "massospondylus", "euskelosaurus", "heterodontosaurus", "abrictosaurus", and "lesothosaurus". the middle jurassic is poorly represented in africa. only the three sauropods "cetiosaurus", "lapparentosaurus", and "archaeodontosaurus" have been discovered dating from this time period.