What does the variety of large tail clubs and associated spi… What does the variety of large tail clubs and associated spikes on ankylosaurids suggest? Read Details
___________________ became the dominant gymnosperms during M… ___________________ became the dominant gymnosperms during Mesozoic. Read Details
What is the most distinguishing characteristic of the sauris… What is the most distinguishing characteristic of the saurischians? Read Details
On what continents are the most dinosaur fossils found? On what continents are the most dinosaur fossils found? Read Details
What are some evidences for late Cretaceous cooling? What are some evidences for late Cretaceous cooling? Read Details
If a dinosaur bone is found between two layers dated at 90 m… If a dinosaur bone is found between two layers dated at 90 million and 70 million years, respectively, what is the age of the dinosaur bone? Read Details
How many stages of breakup did Pangea go through? How many stages of breakup did Pangea go through? Read Details
_________________________ was an early mammal from Late Tria… _________________________ was an early mammal from Late Triassic. Read Details
Which vertebrate fauna existed before dinosaurs were most ab… Which vertebrate fauna existed before dinosaurs were most abundant? Read Details
An economic event or condition that directly changes a busin… An economic event or condition that directly changes a business’s financial condition is called a business transaction. Read Details
