answersLogoWhite

0

By fossilisation and permineralisation.

Fossilisation is caused by layers upon layers of sediment burying the bones. As the layers of sediment above the buried bones increases, so does the pressure on the layers of sediment lower down. The pressure becomes so great that the bones and the sedimentary rock fuse.

Permineralisation occurs when mineral rich water trickles in through the sedimentary rock reaching the dinosaur bones. The minerals fill in the cracks and spaces within the bone. Sometimes the calcium in the bones may be replaced with these minerals. The new minerals in the bone make them even harder and more likely to be preserved.

User Avatar

Wiki User

10y ago

What else can I help you with?

Related Questions

What are the two ways of dating fossils explain both?

carnivore


What are two ways of using fossils to date organisms?

superposition and carbon dating


Two conditions necessary for fossils to form?

well in your body there are made up of fossils as fossils are formed in hot places and your body is very warm


Describe two ways to get help in an office program?

two ways to get help in office program


What two ways do scientist use fossils to determine the environmental changes?

its radioactive dating and relative dating


What are different type of narrative?

Narrative structure is about two things: the content of a story and the form used to tell the story. Two common ways to describe these two parts of narrative structure are story and plot.


What are two different ways to describe location?

area and place


What are two ways Caribbean families preserve their culture?

describe two ways Caribbean families preserve their cultural tradition


What are different types of narrative structures?

Narrative structure is about two things: the content of a story and the form used to tell the story. Two common ways to describe these two parts of narrative structure are story and plot.


What are two ways to describe location?

latitude and longitude


What are two ways Caribbean families preserve their cultural traditions?

describe two ways Caribbean families preserve their cultural tradition


What are the two ways of representing the Income Statement in accounting?

There are two ways of presenting income statement: Account Form Statement Form