Share fossils part 1
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A copy of original internal details of a skeleton of old living organism
solid mold
A replica of external details of skeleton of living organisms
cast
The fossils types differ according to their way of .............
formation
The suitable medium to form a mamoth fossil is...........
medium preserve it from decomopsition(snow)
.............trees secrete resinous matter , changes into ..............after its solidification
pertified woods
..............and............are examples of solid mold fossils
ammonites , nummolites
..................replaces wood material patr by part in the...........wood fossils
silica , pertified
