Earth History Crossword Puzzle

QUESTIONS LIST: devonian: numerous fishes, other sea life; many plants, first trees; wingless insects, paleozoic: oldest era; organisms developed hard parts, evolution: the process of change that produces new life forms over time, stone age: prehistoric period during which stone was widely used, era: a major division of geologic time, archean: formation of oceans, atmosphere, and continents; bacteria, permian: largest extinction in earth's history, jurassic: many sea reptiles;early large dinosaurs; later,flying reptiles, and earliest known birds, cenozoic: relating or denoting to the most recent era, cretaceous: period characterized by the greatest development, rise of modern insects and flowering plants, reptile: a cold-blooded vertebrate including snakes and lizards, precambrian: all the geologic time before the start of the cambrian period in the paleozoic era, eon: period in earth's history, geology: science of the history of the earth as recorded in rocks, ordovician: diverse marine life, including vertebrates; vascular plants, mesozoic: era comprising of the triassic, jurassic, and cretaceous periods, dinosaur: an extinct terrestrial reptile of the mesozoic era, periods: subdivisions of eras