The large frill of Triceratops may have helped with protection AND this social behavior.
What is attracting mates?
Flat, wide teeth suggest a dinosaur was this.
Flowering plants spreading during this time gave herbivores more of this.
What is food?
The Cretaceous period ended with a huge this from space.
What is an asteroid?
The Cretaceous is a type of this, a big chunk of time in Earth’s history.
What is a period?
The hollow crest of Parasaurolophus likely helped it do this.
What is make sounds?
Fossilized footprints that are close together suggest the dinosaur was moving this way.
What is walking slowly?
More plants led to more herbivores, which then supported more of these.
What are carnivores?
The asteroid hit near this modern-day country.
What is Mexico?
Many dinosaurs ate these during the Cretaceous.
What are plants?
The thick armor of Ankylosaurus is an example of this type of adaptation.
What is defense/protection?
A group of similar fossils found together might suggest dinosaurs did this.
What is live in a herd?
The continents did this during the Cretaceous Period, leading to life evolving differently in each segment.
What is split further apart?
Mass extinction is defined as this.
What is a catastrophic event where at least 75% of all species vanish within a geologically short period?
These flying reptiles lived alongside dinosaurs but were NOT dinosaurs.
What are pterosaurs?
Sharp claws and forward-facing eyes in Velociraptor suggest it did this.
What is hunt prey?
Mosasaurus and Albertonectes were this kind of reptile.
What is marine?
The climate was mostly this.
What is warm and mild?
This shows how all living things are connected in an ecosystem.
What is a food chain?
This group of animals survived the extinction and still lives today.
What are birds?
Color pigments are held in this kind of cell.
What are melanosomes?
This is the ancestor to modern alligators.
What is Deinosuchus?
The Cretaceous Period lasted from 145 million years ago to this.
What is 66 million years ago?
Without sunlight, plants could not do this process.
What is photosynthesis?
This new invertebrate species began to flourish.
What are insects?