Evolutionary Milestones

noun a period of the Paleozoic era, from about 416 to 359 million years ago, known for its diverse marine life and the first appearance of many types of fish

• The Devonian period is known for the diversification of fish and the first appearance of forests on land.
• Did you know that the Devonian period was when fish started to become more diverse?
• The Devonian era was like the fish party era, you know what I mean?
• Just like the Devonian period marked a new beginning for life on Earth, this project marks a new chapter for our team.

noun a proper noun referring to a specific geological period in Earth's history, known for the diversification of life forms

article a determiner used before a noun to specify or limit it

• The Cambrian period is known for the rapid diversification of marine life.
• Have you heard about all the cool creatures that lived during the Cambrian?
• The Cambrian was like the ultimate marine life party!
• Exploring the Cambrian period is like taking a journey back in time to the birth of complex life forms.

noun the Paleozoic era

adjective relating to or denoting the era between the Precambrian eon and the Mesozoic era, comprising the Paleozoic era.

• The Paleozoic era is known for the diversification of marine life.
• I find it fascinating how many different creatures lived during the Paleozoic era.
• The Paleozoic times were lit with all kinds of cool sea creatures.
• Exploring the Paleozoic era is like stepping into a time machine to witness ancient marine life.

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.