70 Nations

This is a geological time scale I have collated from many different sources:

(Cosmologic? Primordial?)
   |
* Precambrian/Laurentian/Cryptozoic
(algae, worms, bacteria, trilobites, arthropods, microorganisms, coal)
Azoic/Hadean/Priscoan
(Paleo-Laurentian? Chaotian, Prenectarian, Cryptic, Basin)
(Zirconian, Nectarian, Early Imbrian) (water, coal, crystalline)
(primeval ocean, rain drops, hot winds, sea sediments?)
   |
Archeozoic/Archean
(Pongolan, Rayner orogeny, Insell orogeny, photosynthesis)
(cells/life, chemicals, Keewatin lava/sedimentary? Timiskaming?)
(metamorphised sedimentary, granite, algae, invertebrates)
   |
Proterozoic
(Algonkian? Keweenawan? Cadomian)
(Huronian, Tonian, Cryogenian, Ediacaran, Dorchester pot)
(biota, algae, microorganisms, oxygen-rich)
(orogenies, metamorphic, Taconic, Rodinia/Columbia)
   |
* Phanerozoic
* Palaeozoic/Primary / old fold mountains
(invrtebrates, fish, amphibians)
* Upper Paleozoic / invertebrates (Caledonian, trilobites, graptolites)
Cambrian
(marine vertebrates, slallow seas, marine life, trilobites, brachipods)
(explosion, algae, aquatic invertebrates, microorganisms, fungi, spores)
(like land plants, reef, giant, orogenies, sea flooded continents)
(metamorphosed rocks, human footprint with trilobites in it)
   |
Ordovician
(ice age, Taconian, Caledonian, limestone, shallow seas)
(marine invertebrates, fish, land plants, fish-like, vertebrates)
(corals, seas submerged / waters spilled over, Taconian, ash, ice)
   |
Silurian
(land plants, cephalopods, trilobites, fish, land animals, arthropods)
(marine plants, Caledonian, ash, lava, overthrust, coral)
(Upper Paleolithic tools made of Silurian material)
   |
* Lower Paleozoic (fish, fern)
Devonian/fishes
(Old Red Sandstone, Acadian)
(land plants, trees, brachiopods, fish, sharks, insects, amphibians)
(arthropods, terrestrial vertebrates, tree-like, clubmoss, ferns)
(trees, corals, igneous, granite, Euramerica landbridge, land plants)
   |
* Amphibians
Carboniferous/Coal
(seas invaded land, volcanoes, glaciation, land animals, marine life)
Lower Carboniferous / Mississippian
(land plants, crinoids, sharks, fish, land animals, insects, glaciation)
UpperCarboniferous / Pennsylvanian
(warm, Hercynian/Armorican, ferns, cockroaches, reptiles)
(high oxygen, humanoid tracks in sandstone / sandy beach)
   |
Permian
(ice age, coal, ferns, confiers, trilobites)
(amphibians, reptiles, mammals, insects, evergreens)
(cone-bearing, shallow reefs, Pangaea)
   |
Permian-Triassic extinction event
   |
* young fold mountains
* Mesozoic/Secondary/Reptiles
(vegetarian, warm, pine/palm)
(gymnosperms, cycads, birds, ammonites, sea-urchins)
Triassic
(Rhaetian, dinosaurs, mammal-like, mammals)
(present-day type insects, modern corals)
   |
Jurassic
(Lias, Oolite, Oxford Clay, Nevadan)
(cycads, mammals, birds, archaeopterix, angiosperms)
(Laurasia & Gondwana, carbon dioxide, no seasons)
   |
Commanchian
   |
Cretaceous/Chalk
(Cenomanian, Turonian, Laramide)
(worldwide break/upheaval/catastrophe, four rivers in Palestine)
(mammals, dinosaurs, snakes)
(human & dinosaur footprints in same bed/strata)
(breakup of Godwana, London artefact iron hammer, Moab Man)
(fossil leaves indistinguishable from present-day flowering plants)
   |
* Cenozoic/Mammals/sedimentary
(birds, plants, new era, Himalayas, Rockies, Andes, cold-warm-glacial)
* Tertiary (deciduous, pluvial)
* Palaeogene (nummulitic)
Palaeocene (impact, extinction event, tropical, diversify)
   |
Eocene (Alpine, horses, warming-cooling, Himalayas, Antarctic ice)
   |
Oligocene
(mastodons, monkeys, apes, seasons)
(extinction, Antarctic glaciation, diversification)
   |
* Neogene
Miocene
(Alpine, dogs, horses, apes)
(lowering carbondioxide, warmer, disruption/extinctions)
(saline lakes, moderate icehouse climate, ice ages, Antarctic ice)
   |
Pliocene
(Alpine, apemen, Greenland ice, cooling, flooding of Meidterranean)
(Calveras man)
   |
* Quarternary/Anthropocene/Anthropolithic/Posttertiary (cultivated)
Pleistocene/Glacial/Diluvial/GreatIceAge/Palaeolithic/Postpliocene
(Gelasian, Calabrian, Eemian, Dryas, Toba)
(Gunz, Mindel, Riss, Wurm) (megafauna, megafauna extinction)
   |
Holocene/Recent/Alluvial/Postglacial/Psychozoic
(Preboreal/warmer, Boreal/arid, Atlantic/warm, Climatic Optimum)
(Subboreal, Klimasturz, Subatlantic)
(Neolithic, Doggerland, Sundaland, Sahara, Little Ice Age).

Notice that there were no seasons in the Jurassic, and then there was a worldwide break upheaval/catastrophe in the Cretaceous, and then  seasons first appear in the Oligocene. This may match the Bible implying that seasons first appear after the Flood because just after the Flood is the first mention of "summer & winter".
The Cambrian explosion could match the Creation in Genesis 1.