Mass Extinctions Occurred at the End of Each of the Following

question 13

Multiple Choice

Mass extinctions occurred at the end of each of the following periods except the

• A) Devonian.
• B) Cretaceous.
• C) Silurian.
• D) Permian.
• E) Triassic.

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Definitions:

Cone Snails

Marine snails known for their beautifully colored shells and potent venom, which they use to immobilize prey.

Morphine

A powerful opiate analgesic drug derived from the opium poppy, used for pain relief.

Cephalothorax

The fused head and thorax found in certain arthropods, including spiders and crustaceans.

Arachnids

A class of joint-legged invertebrate animals that includes spiders, scorpions, ticks, and mites.