What did Brachychampsa eat?
ABSTRACT-The dentary of Brachychampsa montana, from the Late Cretaceous of North Amer shows morphological specializations which suggest that its diet was primarily turtles.
Where did Brachychampsa live?
Brachychampsa is an extinct genus of alligatoroid, possibly a basal caiman. Specimens have been found from New Mexico, Colorado, Wyoming, Montana, North and South Dakota, New Jersey, and Saskatchewan.
What clade gave rise to the dinosaurs?
Archosauria: the major amniote clade that includes dinosaurs, crocodiles and birds, and their ancestors.
When was Idaho underwater?
Idaho lay underwater off the coast of North America for about 540 millions year through the Paleozoic and well into the Mesozoic Era.
When did alligators split from crocodiles?
80 million years ago
Though they look remarkably similar, alligators and crocodiles diverged evolutionarily during the Late Cretaceous period some 80 million years ago.
What did alligators evolve from?
The first alligator ancestors evolved some 245 million years ago. About 80 million years ago, during the Cretaceous period, crocodilians appeared. This group includes alligatoroids, such as Brachychampsa, as well as their close relatives the crocodiles and caimans.
Which is older alligators or crocodiles?
Crocodiles Are Slightly Older Than Alligators Crocodiles can be traced back from around 70 million years ago to the late Cretaceous period. But, their ancestry goes back even farther than that. The animals that would later become crocodiles can be traced back to the Jurassic period.
What two features are diagnostic for Theropoda?
Theropods had the largest and most sophisticated brains of any known dinosaur….
- Their long necks would have extended their vertical feeding range so that they could have cropped vegetation from tall trees.
- Their jaw hinge is below the line of the upper tooth row (as in plant-eating ornithischians).
Which clade contains Archaeopteryx?
Archaeopteryx
| Archaeopteryx Temporal range: Late Jurassic (Tithonian), | |
|---|---|
| Phylum: | Chordata |
| Clade: | Dinosauria |
| Clade: | Saurischia |
| Clade: | Theropoda |
Did T Rex live in Idaho?
New research shows that horse-sized, T-Rex-like dinosaurs roamed southern Idaho 100 million years ago. This discovery shows Idaho was home to more types of dinosaurs than previously thought. Paleontologist L.J. Krumenacker has been digging up dinosaurs in Idaho for more than a decade.
Are dinosaurs found in Idaho?
Krumenacker has discovered and documented the first dinosaur burrow in Idaho, which is just the second dinosaur burrow discovered in North America and the third discovered in the world. Both North American burrows are from the dinosaur Oryctodromeus, Idaho’s most common dinosaur.
