What Was Life Like During the Ordovician Period?
The Complete History of the Earth: Ordovician Period
The Hidden Secrets of the Ordovician Age
The Ordovician Period (That We Know Of)
The Evolution of Life part 3 : Ordovician
The Complete History Of The Earth: Ordovician Era
How Plants Caused the First Mass Extinction
Earth's five mass extinctions
Welcome to the Ordovician
Life in the Cambrian & Ordovician ~542-444 mya | GEO GIRL
The Complete History of the Earth: Devonian Period
The Ordovician-Silurian Extinction Event
Geology of the Cambrian & Ordovician 542 - 444 Mya | GEO GIRL
The Complete History of the Earth: Silurian Period
Lecture 2: Ordovician and Silurian
What If You Lived in the Cambrian Period?
What If You Lived in the Paleozoic Era?
What Was Earth Like in the Cenozoic Era?
"Earth's Ancient Catastrophe: Ordovician Extinction Event!"
Late Ordovician Mass Extinction (Ordovician - Silurian)
Earth currently experiencing a sixth mass extinction, according to scientists | 60 Minutes
A Timeline of Life on Earth: 4 Billion Years of History
History of Life Pt 2: Paleozoic Era - Ordovician through Permian Periods
Episode 85 - The Ordovician Mass Extinction
The Great Dying: The Permian Mass Extinction
The Great Ordovician Biodiversification Event
Ancient Manitoba - Ordovician Life 450 Million Years Ago
The Ordovician - Tour Through Time Episode 2
When Did Life on Earth Really Take Off? | The History of Life Pt. 2
Big 5 Mass Extinction Events
The History of Life on Earth - Crash Course Ecology #1
The CHILLING TALE of the Ordovician-Silurian Mass Extinction
Titans of the Prehistoric Seas: The Lost Era of Ordovician Giant Shellfish Earth History Documentary
Orogeny Geological Formation of North America: 600 Million Years Ago To Present
Life On Our Planet: PART 3 | First Mass Extinction | Ordovician Period
Triumph of the Trilobites
How Many Times Has The Earth Experienced An Extinction Event? | The Next Great Event | Spark
Aquatic Animals of the Paleozoic Era. Size comparison and data. Paleoart
The 5 Worst Mass Extinctions in History
What was the Earth like during the 5 Mass Extinctions ? | History of the Earth Documentary
Paleozoic Sea Animals | What kind of sea animals lived in Paleozoic Era? | Kids Draw
Ordovician Reef Ecosystems
Systematic Classification of Life ep9 - Gnathostomata
Trilobites of the Ordovician (plus Anatomy of Trilobite Eyes)
Duff Unscripted: New Fossil Site Reveals Remarkable Ordovician Fauna
Victorian Era Couple Live Like It's The 19th Century | Extraordinary People | New York Post
Ordovician Sea Life Diorama at Cincinnati Museum Center
The history of life on Earth | EvolutionExamples
The Evolutionary Epic: Crash Course Big History #5
Geological timescale | Paleozoic era and its periods
The Upper Ordovician Sea - interactive 3D application
Ordovician–Silurian extinction events
We're Not The Only Species To Cause A Mass Extinction
The Evolution of early Plants
Life On Our Planet 2.2 - Prof. Christian Klug
