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mammals
The mass extinction that occurred at the end of the Cretaceous period left a lot of empty spaces for the surviving animals to fill. Lizards and crocodilians were around, but in general, land life in the earliest millennia of the Cenozoic was sparse.
No animals really replaced the dinosaurs in the early years of the Paleocene epoch, but if you're asking which of the tetrapods eventually took over, I think it's a tossup between the birds and the mammals, depending on which continent you're considering and how a many millions of years you wish to traverse. In presumptive South America and Europe, the mammals were primarily small insectivores and/or herbivores; based on the fossil evidence, none had teeth that were designed for cutting meat. The birds that survived the extinction pulses vied with the mammals for dominance and the issue swung back and forth for millennia. By the late Paleocene, in Europe and South America, huge, very obnoxious-looking birds - some as tall as 7-8 feet with huge, very aggressive bills - became the dominant meat-eaters. In Asia, this seems not to have been the case.
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What else can I help you with?
Was the word mesozoic refers to the era of middle life?
This word is from Latin meaning "middle life" because this was the second era out of the three in the eon of animal life on Earth. It is also called the "age of the dinosaurs."
The dominant animal life during the Mesozoic Era was the dinosaur slash reptile True or False?
The dominant land animal life during the Mesozoic was reptiles and dinosaurs.However, it is important to note that dominant does not mean the most biodiverse, common, or consisting of the greatest biomass. It simply means that they were the most common large vertebrates. Insects, for example, have always beaten reptiles in biodiversity and I believe biomass, too.
Why did scientists assume dinosaurs were cold blooded?
The first traits of dinosaurs that scientists noticed were reptilian. In fact, the first animal to be called a dinosaur was iguanadon, named for its iguana-like teeth. So from their discovery until the mid-20th century, scientists regarded dinosaurs simply as giant reptiles. It was not until the 1960s that new discoveries started to point toward an at least some dinosaurs being warm blooded.
What did dinosaurs evolve from?
Dinosaurs evolved from reptiles during the Triassic period, about 230 million years ago. They are thought to have descended from Archosaurs, a group of reptiles that also gave rise to crocodiles and birds.
What is the most successful during the Mesizoic era?
Dinosaurs were the most successful group of animals during the Mesozoic era, dominating terrestrial ecosystems for millions of years. They evolved into a diverse range of shapes and sizes and were the top predators in many environments. The Mesozoic era also saw the rise of flowering plants and the expansion of marine reptiles.
What animal group does the dinosaurs of Mesozoics era belong to?
reptiles
Are dinosaurs an animal?
Yes they were animals. They were reptiles but are also the ancestors of birds. (one of the feathered dinosaurs was called an Archaeopteryx)
What animal dominated the the Mesozoic era?
Reptiles were the main vertebrates during the Mesozoic. There were dinosaurs on land and pterosaurs in the sky. There were also marine reptiles like plesiosaurs and mosasaurs.
What kind of animal was dinosaur?
Yes. They were surely not plants, rocks, dirt, or anything like that. :-)
What kind of animal is a dinosaur?
Dinosaurs are basically reptiles,creature with scaly skin and all
What animal group did scientists put dinosaurs into?
That would be easy. Dinosaurs are in a group of Reptiles called Archosaurs which also includes birds,Crocodile,Alligators,Pterosaurs,and their possible ancestors- Thecodonts.
Why is the Cenozoic era is called the age of mammals?
The Cenozoic Era (65 million years ago to now) is known as the age of the mammals because this is the period where mammals came to dominate most environments on Earth. Although true mammals evolved in the late Triassic Period about 200 million years ago but where generally thought to be small and most certainly overshadowed by Reptiles such as Dinosaurs. When the Dinosaurs and most other large reptiles died out 65 million years ago, mammals started to become more dominant filling the ecological niches that where filled by large reptiles. Likewise Angiosperms (flowering plants) also shared similar fortunes. Many environments. There was a marked shift from Gymnosperms such as ferns and cycads to flowering plants.
What animals live in the Mesozoic?
Animal life was then dominated, by large archosaurian reptiles: dinosaurs, pterosaurs, and aquatic reptiles such as ichthyosaurs, plesiosaurs, and mosasaurs. the first birds and placental mammals also appeared
What animal today looks most like a tyrannosaurus?
Birds are the closest living relative of a branch of dinosaurs (they're actually descended from dinosaurs whereas we're descended from reptiles), so they would be the most similar.
Why do cats have the same eyes as dinosaurs but not any other animal?
They don't. If you're referring to the shape of their pupils - many animals have eyes like that. Mostly reptiles.
What is the largest reptile but no dinosaurs?
There isn't one, as all reptiles have backbones.
How did pteranodon become extinct?
A pteranodon is a pterosaur, or a flying dinosaur. During the fall of the dinosaurs, all dinosaurs became extinct, including the pterosaurs.
