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Cretaceous tertiary end triassic end permian late devoian and ordovician silurian?
These are periods in the geologic timescale, spanning from 145 million years ago (Cretaceous) to 443 million years ago (Ordovician). Each period represents a distinct time in Earth's history characterized by specific events and changes in life forms, such as the extinction of dinosaurs in the Cretaceous period or the diversification of marine life in the Ordovician period.
What was the environment like in the Ordovician period?
The weather in the Ordovician Era was very damp weather, but also, as the era continued, it grew relativley warm.The sudden change in weather caused mass extinction. Then all of the microscopic animals began to show up.
Major geologic events in the ordovician time period?
meany *By G1N4* Well, for starters the first vertabrates were created called the jawless fish (very creative...*HINT THE SARCASM*) and other organisms, which i am not sure are vertages or not, were cepholopds, bronchiopod, ect. also this was the second period in the Paleozoic era. I just learned about this stuff today so id ont know much. so sorry if it is not enough.
Was their an ice age in the Ordovician period?
Yes, it is believe that there was a glaciation at the beginning of the ordovician, and posibly one nearing the end. It is generally thought to be a period of tropical temperatures, and high sea levels.
What ended the Jurassic period?
The end of the Silurian period and the beginning of the Devonian period was not defined by an extinction event, but by the distinctive rock formations of the period. As a result the end of the Silurian period is uncertain by +/- 2.8 million years.
What period did grapolites go extinct?
They became extinct in the mass extinction at the end of the Ordovician Period.
What were the 5 major extinction events in earth history?
They are the end-Ordovician extinction, end-Devonian extinction, end-Permian extinction, the Triassic extinction, end-Cretaceous extinction.
What major geological events happened in the Ordovician period?
there was plate tectonic movement
How did the Cambrian period end?
The Cambrian period ended around 485 million years ago with an event known as the Cambrian-Ordovician extinction. This extinction event is believed to have been caused by changes in the Earth's climate and sea levels, as well as volcanic activity. It resulted in the loss of many marine species, paving the way for the rise of new organisms during the subsequent Ordovician period.
Cretaceous tertiary end triassic end permian late devoian and ordovician silurian?
These are periods in the geologic timescale, spanning from 145 million years ago (Cretaceous) to 443 million years ago (Ordovician). Each period represents a distinct time in Earth's history characterized by specific events and changes in life forms, such as the extinction of dinosaurs in the Cretaceous period or the diversification of marine life in the Ordovician period.
What was the environment like in the Ordovician period?
The weather in the Ordovician Era was very damp weather, but also, as the era continued, it grew relativley warm.The sudden change in weather caused mass extinction. Then all of the microscopic animals began to show up.
Major geologic events in the ordovician time period?
meany *By G1N4* Well, for starters the first vertabrates were created called the jawless fish (very creative...*HINT THE SARCASM*) and other organisms, which i am not sure are vertages or not, were cepholopds, bronchiopod, ect. also this was the second period in the Paleozoic era. I just learned about this stuff today so id ont know much. so sorry if it is not enough.
Was their an ice age in the Ordovician period?
Yes, it is believe that there was a glaciation at the beginning of the ordovician, and posibly one nearing the end. It is generally thought to be a period of tropical temperatures, and high sea levels.
What was the first major extinction event?
First major extinction (c. 440 mya): Climate change (relatively severeand sudden global cooling) seems to have been at work at the first ofthese-the end-Ordovician mass extinction that caused such pronouncedchange in marine life (little or no life existed on land at that time). 25%of families lost (a family may consist of a few to thousands of species).
What kind of dinosaurs were there in the cretaceous period?
The T-Rex and Triceratops. The extinction of the dinosaurs marked the end of the cretaceous period.
What era had 95 percent of species die out?
The worst known mass extinction in Earth's history was the Permian-Triassic Extinction Event at the end of the Permian period. The Permian period was the last period of the Paleozoic Era.
How did the silurian time period end?
A mass extinction event/ice age marked the end of the Ordivician Period. The climate, location of landmasses, and number and diversity of species had changed dramatically since the beginning of the period. When the changes that were occurring during the mass extinction event leveled out, a new period began.
