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ซากดึกดำบรรพ์  PowerPoint PPT Presentation


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ซากดึกดำบรรพ์ . ซากดึกดำบรรพ์  ซากดึกดำบรรพ์ คือ ซากหรือร่องรอยของสิ่งมีชีวิตทั้งพืชและสัตว์ที่เคยอาศัยอยู่ในบริเวณนั้น  เมื่อตายซากจะถูกทับถมและฝังตัวอยู่ในชั้นหินตะกอน

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2962706


2962706

(SiO2)


2962706

(index fossil)


2962706

(Mollusca)


2962706

. .

290


2962706

. .

. 250


2962706

3,500


2962706

2


2962706

(petrifaction)

  • 4.

1.

2.

3.


2962706

16 0.7 . .

. . 1 7


2962706

(distillation carboni -zation)

  • (graptolite) (arthropods)

  • (impression)

(carbonization)


2962706

(refrigeration)

1 40,000

67


2962706

(preservation)

  • (peat) (tar) (asphalt)

  • (amber)

40

26-112


2962706

(mummification)

2

Mummified baboon


2962706

(fossil traces)

1. (mold) (impression) ()

(Bryozoa) Mold 416-359

(Bivalve)

Mold

359-299


2962706

2. (cast) ()

(Brachiopod) Mold 416-359


2962706

3. (tracks and trails)

10,000

.

.


2962706

4. (coprolites)

14,000 13,000

12,000-100,000


2962706

5. (gastrolites) (Gizzard stone)


2962706

6. (feeding burrow)

cyanobacteria

(worm) 1.2


2962706

200 100


2962706

4 130 15-20


2962706

: 2 2 130 6.5


2962706

2 1-2 130


2962706

4 209 13-15


2962706

"" (25 ..54)

200 100


2962706

1. 4,600

3,000

2. 2 ()

3. (Species)


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