0
The largest extinction of animals commonly called dinosaurs was around 65 million years ago, in a time period known as the Cretaceous-Tertiary extinction event, which lasted somewhere from several to several thousand years (evidence is not determinate on the exact length of the event for several reasons, and above-mean rates of extinction persisted for quite some time). This view is supported by the vast majority of scientific evidence and knowledge.
Some dinosaurs did survive however, to become extinct at much later times, and others had gone extinct much earlier, so one could technically describe all of the last 230 million years as "when [the] dinosaurs became extinct".
There is a substantial number of scientists, however, who would say that, technically speaking, "the dinosaurs" did not become extinct at all, because one group is still with us: the birds. There is considerable evidence that birds are descended from a group of dinosaurs known as Maniraptora (see the related link below), which would indicate that birds are properly included within the dinosaur clade (group of organisms related by descent).
All the dinosaurs went extinct about 65 million years ago after a giant asteroid hit earth.
Still curious? Ask our experts.
Chat with our AI personalities
Blake
Judy
Taiga
Add your answer:
Earn +20 pts
Are turkeys dinosaurs?
No. Turtle are from a branch of reptiles completely separate from dinosaurs.
Did the dinosaurs extinct at once?
No, dinosaurs did not go extinct all at once. The extinction event that wiped out the non-avian dinosaurs around 66 million years ago is believed to have happened relatively quickly in geologic terms, but not instantaneously. Some species may have gone extinct earlier or later than others due to various factors.
Who studies dinosaurs?
Paleontologists study dinosaurs. They analyze fossils and use their findings to understand how dinosaurs lived, evolved, and interacted with their environment.
Were all dinosuars carnivores?
No, not all dinosaurs were carnivores. There were herbivorous dinosaurs that primarily ate plants, such as the Triceratops and the Apatosaurus. Additionally, some dinosaurs were omnivores, meaning they ate both plants and meat.
Did dinosaurs have mitochondrian?
Considering that most eukaryotic cells have mitochondria and that dinosaurs are eukaryotes like all other animals that ever lived, it is certain that they did have mitochondria in their cells. In fact, birds are considered dinosaurs (they certainly descended from dinosaurs) and their cells have mitochondria, so we can be as sure as scientifically possible that dinosaurs indeed did have mitochondria.
