The Fossil Record (VCE SSCE Biology): Flashcards

Info from all fossils arranged chronologically

Rapid burial, sediment compaction, sedimentary rock formation

Rapid diversification of multicellular life with hard parts

Rock formed from accumulation & hardening of sediment

Distinctive, large population, widespread, short existence

Shows traits of both ancestral & descendant groups

Determines age by comparing position to other fossils/layers

Time for half a radioisotope sample to decay

5,730 years

Rapid sediment, low temp, low oxygen, protection from scavengers