ASBOG Practice Exam

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Study for the ASBOG Exam. Prepare with flashcards and multiple choice questions. Each question includes hints and explanations to help you succeed. Get ready for your exam!

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In what order do the Mesozoic periods go from oldest to youngest?

Jurassic; Triassic; Cretaceous
Triassic; Jurassic; Cretaceous
Cretaceous; Jurassic; Triassic
Permian; Triassic; Jurassic

The correct answer is: Triassic; Jurassic; Cretaceous

The Mesozoic era is divided into three distinct periods: the Triassic, Jurassic, and Cretaceous. When arranged from oldest to youngest, the sequence starts with the Triassic period, which marks the beginning of the Mesozoic era around 252 million years ago. This is followed by the Jurassic period, notable for the diversification of dinosaurs and the appearance of the first birds, and it lasted from about 201 to 145 million years ago. The era concludes with the Cretaceous period, characterized by the continued dominance of dinosaurs and ending with their mass extinction around 66 million years ago. Therefore, the correct order of the Mesozoic periods from oldest to youngest is indeed Triassic, Jurassic, and Cretaceous. This understanding is essential for recognizing the timeline of geological and biological changes during this era.