FOSSILS Clues to the past 1

Page 63 2  Fossils, November 18, 2014

Fossils What is a fossil? (page 297)  Fossils – preserved remains or evidence of ancient living things  Paleontologist – someone who studies fossils 3

Fossils How do fossils form?  Most form when living things die and are buried in sediment. Over time, the sediment forms sedimentary rock. 4

Fossils What are the types of fossils? (pages )  Petrified fossils – minerals replace the organism ds/petrifiedwood/petrifiedwood.ht ml 5

Fossils What are the types of fossils? (pages )  Mold – an indentation left in sedimentary rock of the organism’s shape 6

Fossils What are the types of fossils? (pages )  Cast – a copy of the organism’s shape (made from the fossil mold) 7

Fossils What are the types of fossils? (pages )  Carbon films – carbon left from an organism is left in the sediment 8

Fossils What are the types of fossils? (pages )  Trace fossils – evidence of an organism’s activities (footprints) 9

Fossils What are the types of fossils? (pages )  Preserved remains – an organism that’s been covered in a material that reduces its deterioration (organism stuck in tar, amber, or ice) 10

Fossils What are the types of fossils? (pages )  Index fossils – fossils of a widely distributed organism that existed briefly. Index fossils are used to determine the relative age of rock layers. 11

Page 62 – Fossils 4-Square 12 Copy the 4-square box onto page 62. #1#2 #3#4

Page 62 – Fossils 4-Square 13 Complete the 4-square by answering the questions or completing the sentences. #1 WHAT DOES A PALEONTOLOGIST DO? #2 A CAST FOSSIL IS LIKE A STATUE BECAUSE _____________________ _____________________ _______________ #3 A TRACE FOSSIL IS LIKE A DIARY BECAUSE _____________________ _____________________ _______________ #4 WHAT WOULD YOU CHANGE OR ADD TO WHAT A PALEONTOLOGIST DOES (SQUARE #1)