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an emergent
website design
by
peter jay stein, md, ma
atmosphere
asthenosphere
lithosphere
regolith
biosphere
hydrosphere
This 54 page synopsis of the evolution
of the Earth, the origin and progression of life, and the
emergence of humans as descendants of the hominin lineage, divides the last 4.57 billion years into progressively overlapping, imagistic, time segments, to outline our place in biological existence.
magnetosphere
ionosphere
TWELVE
Emergent Archaic Life
adapted from multiple sources (see Bibliography)
LUCA
(last universal common ancestor)
Protista
bacteria
archaea
Eukarya
plants
fungi
Unikont
Prokaryote
Opisthokont
Unicellular flagellate
Choanoflagellate
parazoa
Eumetazoa
radiata
Bilateria
protostome
Deuterostome
3500 mya
541 mya
2200 mya (2.2 bya)
650 mya
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