The Devonian Period is also known as the "Age of Fishes," as it was during this time that fish became the predominant form of marine life. Another synonym for the Devonian Period is the "Age of Coral," as coral reefs began to form during this era. The "Age of Amphibians" is another synonym for the Devonian Period, as it was the time when amphibians first evolved and began to venture onto land. Additionally, the Devonian Period is sometimes referred to as the "Old Red Sandstone Age," due to the red sandstones and conglomerates that were deposited during this time. Overall, the Devonian Period was a critical period in the evolution of life on Earth, and its synonyms reflect the various advancements and changes that occurred during this era.