Rock Layers

noun a native or inhabitant of Siluria, an ancient region of Wales, or a member of an extinct Celtic tribe that inhabited this region

adjective relating to or characteristic of the Silurian period, which is a geological period lasting from approximately 443 to 419 million years ago

• The Silurian period is a geologic period that lasted from about 443 million to 419 million years ago.
• Did you know that some of the first land plants appeared during the Silurian period?
• The Silurian was like the OG time period, you know, way back in the day.
• Just as the Silurian period marked a significant change in Earth's history, so too did the introduction of smartphones revolutionize communication.

adjective relating to or denoting the earliest period of the Mesozoic era, between the Permian and Jurassic periods

• The Triassic period occurred approximately 252 to 201 million years ago.
• Did you know that dinosaurs first appeared in the Triassic period?
• The Triassic era was when the cool dinosaurs roamed the earth.
• Exploring the Triassic period is like taking a journey back in time.