Ocean Through Time: A Journey Through Earth's Marine History Flashcard

Front

What was the primary composition of Earth's early atmosphere?

Back

Methane, carbon dioxide, and hydrogen sulfide

Front

What significant event occurred approximately 2.3 billion years ago?

Back

The emergence of cyanobacteria

Front

Which organism is known as the 'T-rex of the Cambrian'? Options: Shark, Hurdia victoria, Armor plated fish, Trilobites

Back

Hurdia victoria

Front

What was a major consequence of the Permian extinction?

Back

Loss of 90% of marine species

Front

What type of marine life dominated the Paleozoic oceans?

Back

Invertebrates

Front

What was the primary cause of the K/Pg extinction event? Options: Volcanic activity, Asteroid impact, Climate change, Ocean acidification

Back

Asteroid impact

Front

Which marine reptiles emerged during the Mesozoic era?

Back

Ichthyosaurs and plesiosaurs

Front

What adaptation did early whales develop in response to environmental changes?

Back

Filter feeding

Front

What was the significance of the Avalon Explosion?

Back

First multicellular life forms appeared

Front

What ecological role did rudist clams play during the Mesozoic?

Back

Reef builders