Author Question: State the principle of fossil succession in your own words. What will be an ideal ... (Read 85 times)

shofmannx20 · **on:** Jul 14, 2018

State the principle of fossil succession in your own words.

What will be an ideal response?

Question 2

List three examples of trace fossils.

What will be an ideal response?

cascooper22 · **Reply #1 on:** Jul 14, 2018

Answer to Question 1

Fossils of organisms appear in the rock record in the same definite and determinable order that they evolved and went extinct on Earth.

Answer to Question 2

a. Tracksanimal footprints made in soft sediment that later became sedimentary rock.
b. Burrowstubes in sediment, wood, or rock made by an animal. These holes may later become filled with mineral matter and preserved. Some of the oldest-known fossils are believed to be worm burrows.
c. Coprolitesfossil dung and stomach contents that can provide useful information pertaining to the size and food habits of organisms.
d. Gastrolithshighly polished stomach stones that were used in the grinding of food by some extinct reptiles.