Ordovician sea life. Credit. Image credit: Fritz Geller-Grimm / National Museum of Natural History / CC BY-SA 2.5. Usage Restrictions. Credit must be given to the creator.

Life in the Late Ordovician. Four hundred and fifty (450) million years ago, during the Late Ordovician, most of Ohio was under water. At that time, the Oxford, Ohio area was part of a large inland ...

Sea life in the Ordovician Period. Esteban De Armas/Alamy. A period of global cooling around 500 million years ago may have triggered Earth’s largest surge in marine biodiversity.

Long before the dawn of humans, dinosaurs, insects or even trees, a cascade of unfortunate events threatened to end life on earth. During the Ordovician Period, around 485 to 444 million years ago, ...

Ordovician sea life. Credit: Fritz Geller-Grimm / National Museum of Natural History / CC BY-SA 2.5. Schematic diagram of species loss controlled by climate change during the LOME.

The geology of the Oxford, Ohio area includes (but is not limited to) the following rocks and features: Limestone Southwestern Ohio's limestone (a sedimentary rock) is saturated with life — life from ...

500 million years ago, the world was a very different place. During this period of time, known as the Cambrian period, basically all life was in the water. The ocean was brimming with animals that ...

image: Life reconstruction of Archopterus anjiensis view more . Credit: YANG Dinghua. Eurypterids (Arthropoda: Chelicerata), normally known as sea scorpions, are an important extinct group of ...

Ordovician sea life. Credit: Fritz Geller-Grimm / National Museum of Natural History / CC BY-SA 2.5. The "Big Five" mass extinctions of the Phanerozoic Eon have long attracted significant ...