Mass Extinctions : NovaNet
Mass extinction
Mass extinction
Trace
It is a microscopic fossil, as of a pollen grain or unicellular organism.
a fossil in which minerals replaces all or part of an organism
Mass extinction
Mass extinction
A fossil is a trace of an organism that lived long ago.
fossil
This is the idea called punctuated equilibria, by paleontologists Stephen Jay Gould and Niles Eldredge. It explains the patterns seen in the fossil record.
trace
trace
Trace
not really fossil is made from dead organism
It is a microscopic fossil, as of a pollen grain or unicellular organism.
a fossil in which minerals replaces all or part of an organism
a cast fossil