Read this text.

The Islas Ballestas, sometimes referred to as the Poor Man's Galápagos, are inhabited by a variety of marine animals, including sea lions, seabirds, and penguins.
Is this an appropriate use of an ellipsis?
"The Islas Ballestas . . . are inhabited by a variety of marine animals, including sea lions, seabirds, and penguins."

Yes, this is an appropriate use of an ellipsis. The ellipsis is used to indicate the omission of unnecessary or unrelated information in the sentence while still conveying the main idea.

Read this text. The first wristwatches, called wristlets, were considered quite feminine and were worn almost exclusively by women until World War I, when male officers began wearing them to coordinate precisely timed attacks. Is this an appropriate use of an ellipsis? "The first wristwatches, called wristlets, were . . . worn almost exclusively by women until World War I, when male officers began wearing them to coordinate precisely timed attacks."

Yes, this is an appropriate use of an ellipsis. The ellipsis is used to indicate the omission of information that is not necessary for understanding the main idea of the sentence. In this case, the omitted information does not affect the overall meaning of the sentence, and the use of the ellipsis helps to maintain a concise and clear statement.