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many believe this was due to a hugeasteroid (rocky mass that orbits the sun) striking earth- this threw huge amounts of dust and water vapor into the atmosphere, blocking sunlight- killing plants and animals (no dinosaurs survived)
What else can I help you with?
What do most scientist think caused the mass extinction of dinosaurs and other organisms at the end of the Cretaceous Period?
A meteor hit the earth and caused severe condition that organisms could not survive.
Why did pteranodon extinct?
Pterosaurs declined during the Late Cretaceous due to competition with early birds. The last pterosaurs became extinct in the End Cretaceous Mass Extinction, which was caused by an asteroid impact in the Gulf of Mexico.
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.
Which eras ended with a mass extinction?
Two major eras that ended with mass extinctions are the Permian-Triassic extinction event, which marked the end of the Permian period, and the Cretaceous-Paleogene extinction event, which marked the end of the Cretaceous period. These events had profound impacts on life on Earth, leading to the loss of a significant number of species.
When was the last mass extinction?
The Cretaceous–Tertiary extinction event 65 million years ago was the last mass-extinction, and many believe that humans are causing a mass-extinction right now.
How did the cretaceous era end?
The Cretaceous era ended with a mass extinction that wiped out all non-avian dinosaurs, pterosaurs, mosasaurs, plesiosaurs, ammonites, and many other species. It was probably caused by a combination of climate change from excess volcanism in India and a huge asteroid impact.
What period did the dinosaurs become extinct?
Around the end of the Cretaceous Period.Dinosaurs became extinct at the end of the Mesozoic Era 65 million years ago. Their extinction also marked the beginning of the Cenozoic Era.Dinosaurs disappeared near the end of the cretaceous period.Most people believe it was at the end of the Cretaceous however the truth is that it ended in the Tertiary PERIOD not era so be careful that was why the event was called the K-T event because c had been taken in a mass extinction in the oceans.All non avian dinosaurs lived in the Mesozoic Era (251 - 65Ma). The mass extinction 65 million years ago of all non avian dinosaurs along with many other types of animals and plants marks the boundary between the Mesozoic and the Cenozoic Eras.
What is the K-T boundary?
The KT Boundary (also called the Cretaceous-Paleogene, or K-Pg boundary) is a boundary marking the Cretaceous-Tertiary extinction (KT extinction) event. It is usually seen as a thin band, caused by an asteroid impact that wiped out much of life at the time.
What type of reptile did not survive the mass extinction event at the end of the mesozoic era?
The non-avian dinosaurs did not survive the mass extinction event at the end of the Mesozoic era, known as the Cretaceous-Paleogene extinction event. These reptiles went extinct, paving the way for the rise of mammals and birds.
What did the Cretaceous - Tertiary extinction event end?
The Tertiary Era.
What does KT mass extinction mean?
The mass extinction that is believed to have eliminated larger dinosaurs 65 million years ago. Smaller dinosours survived, their descendants are today's reptiles. The mass extinction is believed to have been caused by an asteroid that collided with Earth. For more information, read the Wikipedia article on "Cretaceous-Paleogene extinction event", or search for this term on your favorite search engine.
The mass extinction at the end of the Mesozoic Era was caused by .?
a comet impacting the earth
