Other subdivisions reflect the evolution of life; the Archean and Proterozoic are both eons, the Palaeozoic, Mesozoic and Cenozoic are eras of the Phanerozoic eon.
If we were to cut into the bear, we would find that the bear It’s the same with fossil dinosaur bones – the bone is still there.
The bone has been coated with, and permeated by rock, but the bone is still there.
In this activity, students begin a sequencing activity with familiar items letters written on cards.
Once they are able to manipulate the cards into the correct sequence, they are asked to do a similar sequencing activity using fossil pictures printed on "rock layer" cards.
Time factors of millions and billions of years is difficult even for adults to comprehend.
However, "relative" dating or time can be an easy concept for students to learn.So last week I mentioned (and showed a picture of) my fossil teddy bear.I intended to discuss this in a later post, but I didn’t expect the attention it would get and people asking me “Well…about that teddy bear??? The fossilized teddy bear above only took about 3 months to make.This process has led to remarkable findings such as soft T.rex meat, blood vessels and blood cells found inside a fossil T. This also allows carbon dating to be done on the fossil bone, which has been done.The geologic time scale (GTS) is a system of chronological dating that relates geological strata (stratigraphy) to time, and is used by geologists, paleontologists, and other Earth scientists to describe the timing and relationships of events that have occurred during Earth's history.