What was the geologic time period of ordovican?

Ordovician Period, in geologic time, the second period of the Paleozoic Era. It began 485.4 million years ago, following the Cambrian Period, and ended 443.8 million years ago, when the Silurian Period began. Ordovician rocks have the distinction of occurring at the highest elevation on Earth—the top of Mount Everest.

1. What major geologic events occurred during the Ordovician period?
2. Why is it called the Ordovician period?
3. What was the Earth like in the Ordovician period?
4. What is the Ordovician period named after?
5. What is the Pennsylvanian time period?
6. What happened during the Ordovician era?
7. What were the major geologic events of the Devonian time period?
8. What was Earth like 450 million years ago?
9. Why did the Ordovician Period End?
10. What does the name Ordovician mean?
11. What are Ordovician fossils?

What major geologic events occurred during the Ordovician period?

Significant Ordovician events. Beginning in the Ordovician Period, a series of plate collisions resulted in Laurentia, Siberia, and Baltica becoming assembled into the continents of Laurussia by the Devonian and Laurasia by the Pennsylvanian (also see Cambrian Period).

Why is it called the Ordovician period?

The Ordovician, named after the Welsh tribe of the Ordovices, was defined by Charles Lapworth in 1879 to resolve a dispute between followers of Adam Sedgwick and Roderick Murchison, who were placing the same rock beds in North Wales in the Cambrian and Silurian systems, respectively.

What was the Earth like in the Ordovician period?

During the Ordovician Period, the surface of the earth was dramatically different than it is today. Nearly all life on earth was in the oceans. The only land life was in the form of very primitive plants very near the water line of the coasts, probably mosses and algae and were of a non-vascular nature.

What is the Ordovician period named after?

The second period of the Paleozoic Era, The Ordovician rocks were first found in Wales, so its name comes from a tribe of people who once lived in the area where the rocks were found. The Ordovician began about 490 million years ago and lasted for about 47 million years.

What is the Pennsylvanian time period?

Pennsylvanian Subperiod, second major interval of the Carboniferous Period, lasting from 323.2 million to 298.9 million years ago. The Pennsylvanian is recognized as a time of significant advance and retreat by shallow seas.

What happened during the Ordovician era?

During the Ordovician period, part of the Paleozoic era, a rich variety of marine life flourished in the vast seas and the first primitive plants began to appear on land—before the second largest mass extinction of all time ended the period.

What were the major geologic events of the Devonian time period?

The Devonian Period was a time of extensive reef building in the shallow water that surrounded each continent and separated Gondwana from Euramerica. Reef ecosystems contained numerous brachiopods, still numerous trilobites, tabulate and horn corals.

What was Earth like 450 million years ago?

450 million years ago

The seas are diverse and the first coral reefs have emerged. Algae is the only multicellular plant, and there is still no complex life on land. Invertebrates, namely molluscs and arthropods, dominated the oceans.

Why did the Ordovician Period End?

The evidence indicates that climate change caused the extinctions. A major ice age is known to have occurred in the southern hemisphere and climates cooled world-wide. The first wave of extinctions happened as the climate became colder and a second pulse occurred as climates warmed at the end of the ice age.

What does the name Ordovician mean?

: of, relating to, or being the period between the Cambrian and the Silurian or the corresponding system of rocks — see Geologic Time Table.

What are Ordovician fossils?

Common Ordovician fossils found in Kentucky include sponges (Porifera), corals (Cnidaria), bryozoans, brachiopods, trilobites, snails (gastropods), clams (pelecypods), squid-like animals (cephalopods), crinoids (Echinodermata), and microscopic animals like ostracodes and conodonts. ...