Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Unable to warm themselves in the sun, these small, vole-like synapsids began burning calories to generate heat.

From The Wall Street Journal • Nov. 13, 2025

Researchers studied the jaw anatomy and body size of carnivorous synapsids, using these traits to reconstruct the likely feeding habits of these ancient predators and chart their ecological evolution through time.

From Science Daily • Feb. 22, 2024

At some points, larger synapsids were the ones that survived, and the winners weren't just generalist insect-eaters.

From Science Daily • Oct. 5, 2023

Life on land throughout the Permian Period, which lasted from about 298 million to 252 million years ago, was dominated by synapsids, the evolutionary precursors to mammals or protomammals.

From New York Times • May 22, 2023

The initial split was into synapsids and sauropsids. Synapsids include all mammals, including extinct mammalian species.

From Textbooks • Jan. 1, 2015