Club d'amateurs de minéraux et fossiles de la Gaspésie (Anciennement minéralogie et paléontologie de la Gaspésie)

Cette échelle représente l'évolution géologique et biologique de la terre, en débutant de la formation de notre planète, en passant par l'apparition de la vie, des dinosaures, jusqu'à aujourd'hui.
Chaque petite ligne représente 100000 ans, et l'échelle est graduée à tous les million d'années.
N'allez pas trop vite, sinon vous risquez de manquer des évènements (utilisez les flèches du clavier). Ne vous découragez pas, il y a de longue périodes ou il ne se passe rien. Vous risquez d'être surpris à la fin....

Bon voyage dans le temps!

(Ca n'a rien de scientifique, il est possible que des erreurs s'y soient glissées)

4600000000
Formation de la planète Terre
(Début de l'ère (eon) Hadéenne)
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La planète Terre et la planète Theia entrent en collition, causant la formation d'anneaux autour de la terre qui resteront plusieurs millions d'années jusqu'à ce qu'ils forment la lune, dont le champ gravitationel stabilise l'axe de rotation de la Terre, préparant les conditions pour la formation de la vie
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La croûte terrestre se solidifie, formant les roches les plus anciennes trouvée sur terre
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Condensation de la vapeur atmosphérique en océans
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4000000000La première forme de vie apparait., possiblement dérivée molécules auto-reproductrices de RNA. La réplication des ces organismes requiers des ressources qui deviennet limitées, en resultant la compétition. LA sélection naturelle favorisant les molécules qui se répliquent de façon la plus efficiente. Les molécules d'ADN prendront le dessus et deviendront les principaux réplicateurs. Bientôt, elles se développent à l'intérieur de membranes fermées qui pourvoient un environnement stable pour la réplication de proto-cellules.
A cette époque, l'atmosphère ne contient pas d'oxygène libre.
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3900000000Bombardement: pointe du taux des impacts sur la Terre, la lune, Mars et Venus par des astéroides et des comètes. Ce constant dérangement peut encourager la vie à se développer. On pense que ces impacts peuvent avoir causé les océans à s'évaporer complètement plusieurs fois, mais la vie persiste.
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3800000000(Début de l'ere Archéenne)
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Moment ou vivait le dernier ancêtre universel; division entre les bactéries et les archeas.
Les bactéries développent des formes primitives de photosynthèses qui ne produisaient pas d'oxygène au début.
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Impact d'une météorite géante
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3200000000Apparition des algues bleues et de la photosynthèse
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3089000000
3088000000
3087000000
3086000000
3085000000
3084000000
3083000000
3082000000
3081000000
3080000000
3079000000
3078000000
3077000000
3076000000
3075000000
3074000000
3073000000
3072000000
3071000000
3070000000
3069000000
3068000000
3067000000
3066000000
3065000000
3064000000
3063000000
3062000000
3061000000
3060000000
3059000000
3058000000
3057000000
3056000000
3055000000
3054000000
3053000000
3052000000
3051000000
3050000000
3049000000
3048000000
3047000000
3046000000
3045000000
3044000000
3043000000
3042000000
3041000000
3040000000
3039000000
3038000000
3037000000
3036000000
3035000000
3034000000
3033000000
3032000000
3031000000
3030000000
3029000000
3028000000
3027000000
3026000000
3025000000
3024000000
3023000000
3022000000
3021000000
3020000000
3019000000
3018000000
3017000000
3016000000
3015000000
3014000000
3013000000
3012000000
3011000000
3010000000
3009000000
3008000000
3007000000
3006000000
3005000000
3004000000
3003000000
3002000000
3001000000
3000000000Des cyanobacteries utilisant la photosynthèse évoluent; elles utilisent l'eau comme agent réducteur, produisant de l'oxygène comme un déchet. L'oxygène oxyde le fer dissout dans les océans, produisant du minerai de fer. La concentration d'oxygène dans l'atmosphère augmente substantiellement, agissant comme un poison pour plusieurs bactéries. La lune est encore très près de la terre et cause des marées hautes de 1000 pieds (300 mètres). La Terre est continuellement frappée par des vents comparable à des ouragans. On croit que ces forces extrèmes stimulent le processus d'évolution
2999000000
2998000000
2997000000
2996000000
2995000000
2994000000
2993000000
2992000000
2991000000
2990000000
2989000000
2988000000
2987000000
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2985000000
2984000000
2983000000
2982000000
2981000000
2980000000
2979000000
2978000000
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2971000000
2970000000
2969000000
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2960000000
2959000000
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2952000000
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2950000000
2949000000
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2947000000
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2943000000
2942000000
2941000000
2940000000
2939000000
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2934000000
2933000000
2932000000
2931000000
2930000000
2929000000
2928000000
2927000000
2926000000
2925000000
2924000000
2923000000
2922000000
2921000000
2920000000
2919000000
2918000000
2917000000
2916000000
2915000000
2914000000
2913000000
2912000000
2911000000
2910000000
2909000000
2908000000
2907000000
2906000000
2905000000
2904000000
2903000000
2902000000
2901000000
2900000000
2899000000
2898000000
2897000000
2896000000
2895000000
2894000000
2893000000
2892000000
2891000000
2890000000
2889000000
2888000000
2887000000
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2883000000
2882000000
2881000000
2880000000
2879000000
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2872000000
2871000000
2870000000
2869000000
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2861000000
2860000000
2859000000
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2850000000
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2844000000
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2842000000
2841000000
2840000000
2839000000
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2836000000
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2833000000
2832000000
2831000000
2830000000
2829000000
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2827000000
2826000000
2825000000
2824000000
2823000000
2822000000
2821000000
2820000000
2819000000
2818000000
2817000000
2816000000
2815000000
2814000000
2813000000
2812000000
2811000000
2810000000
2809000000
2808000000
2807000000
2806000000
2805000000
2804000000
2803000000
2802000000
2801000000
2800000000
2799000000
2798000000
2797000000
2796000000
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2792000000
2791000000
2790000000
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2780000000
2779000000
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2772000000
2771000000
2770000000
2769000000
2768000000
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2762000000
2761000000
2760000000
2759000000
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2752000000
2751000000
2750000000
2749000000
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2741000000
2740000000
2739000000
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2736000000
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2734000000
2733000000
2732000000
2731000000
2730000000
2729000000
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2725000000
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2722000000
2721000000
2720000000
2719000000
2718000000
2717000000
2716000000
2715000000
2714000000
2713000000
2712000000
2711000000
2710000000
2709000000
2708000000
2707000000
2706000000
2705000000
2704000000
2703000000
2702000000
2701000000
2700000000
2699000000
2698000000
2697000000
2696000000
2695000000
2694000000
2693000000
2692000000
2691000000
2690000000
2689000000
2688000000
2687000000
2686000000
2685000000
2684000000
2683000000
2682000000
2681000000
2680000000
2679000000
2678000000
2677000000
2676000000
2675000000
2674000000
2673000000
2672000000
2671000000
2670000000
2669000000
2668000000
2667000000
2666000000
2665000000
2664000000
2663000000
2662000000
2661000000
2660000000
2659000000
2658000000
2657000000
2656000000
2655000000
2654000000
2653000000
2652000000
2651000000
2650000000
2649000000
2648000000
2647000000
2646000000
2645000000
2644000000
2643000000
2642000000
2641000000
2640000000
2639000000
2638000000
2637000000
2636000000
2635000000
2634000000
2633000000
2632000000
2631000000
2630000000
2629000000
2628000000
2627000000
2626000000
2625000000
2624000000
2623000000
2622000000
2621000000
2620000000
2619000000
2618000000
2617000000
2616000000
2615000000
2614000000
2613000000
2612000000
2611000000
2610000000
2609000000
2608000000
2607000000
2606000000
2605000000
2604000000
2603000000
2602000000
2601000000
2600000000
2599000000
2598000000
2597000000
2596000000
2595000000
2594000000
2593000000
2592000000
2591000000
2590000000
2589000000
2588000000
2587000000
2586000000
2585000000
2584000000
2583000000
2582000000
2581000000
2580000000
2579000000
2578000000
2577000000
2576000000
2575000000
2574000000
2573000000
2572000000
2571000000
2570000000
2569000000
2568000000
2567000000
2566000000
2565000000
2564000000
2563000000
2562000000
2561000000
2560000000
2559000000
2558000000
2557000000
2556000000
2555000000
2554000000
2553000000
2552000000
2551000000
2550000000
2549000000
2548000000
2547000000
2546000000
2545000000
2544000000
2543000000
2542000000
2541000000
2540000000
2539000000
2538000000
2537000000
2536000000
2535000000
2534000000
2533000000
2532000000
2531000000
2530000000
2529000000
2528000000
2527000000
2526000000
2525000000
2524000000
2523000000
2522000000
2521000000
2520000000
2519000000
2518000000
2517000000
2516000000
2515000000
2514000000
2513000000
2512000000
2511000000
2510000000
2509000000
2508000000
2507000000
2506000000
2505000000
2504000000
2503000000
2502000000
2501000000
2500000000Début de l'ère (eon) Protérozoïque
Quelques bactéries développent la capacité d'utiliser l'oxygène.
Début de l'ère glaciaire Huronienne (2500–2100 Ma)
2499000000
2498000000
2497000000
2496000000
2495000000
2494000000
2493000000
2492000000
2491000000
2490000000
2489000000
2488000000
2487000000
2486000000
2485000000
2484000000
2483000000
2482000000
2481000000
2480000000
2479000000
2478000000
2477000000
2476000000
2475000000
2474000000
2473000000
2472000000
2471000000
2470000000
2469000000
2468000000
2467000000
2466000000
2465000000
2464000000
2463000000
2462000000
2461000000
2460000000
2459000000
2458000000
2457000000
2456000000
2455000000
2454000000
2453000000
2452000000
2451000000
2450000000
2449000000
2448000000
2447000000
2446000000
2445000000
2444000000
2443000000
2442000000
2441000000
2440000000
2439000000
2438000000
2437000000
2436000000
2435000000
2434000000
2433000000
2432000000
2431000000
2430000000
2429000000
2428000000
2427000000
2426000000
2425000000
2424000000
2423000000
2422000000
2421000000
2420000000
2419000000
2418000000
2417000000
2416000000
2415000000
2414000000
2413000000
2412000000
2411000000
2410000000
2409000000
2408000000
2407000000
2406000000
2405000000
2404000000
2403000000
2402000000
2401000000
2400000000
2399000000
2398000000
2397000000
2396000000
2395000000
2394000000
2393000000
2392000000
2391000000
2390000000
2389000000
2388000000
2387000000
2386000000
2385000000
2384000000
2383000000
2382000000
2381000000
2380000000
2379000000
2378000000
2377000000
2376000000
2375000000
2374000000
2373000000
2372000000
2371000000
2370000000
2369000000
2368000000
2367000000
2366000000
2365000000
2364000000
2363000000
2362000000
2361000000
2360000000
2359000000
2358000000
2357000000
2356000000
2355000000
2354000000
2353000000
2352000000
2351000000
2350000000
2349000000
2348000000
2347000000
2346000000
2345000000
2344000000
2343000000
2342000000
2341000000
2340000000
2339000000
2338000000
2337000000
2336000000
2335000000
2334000000
2333000000
2332000000
2331000000
2330000000
2329000000
2328000000
2327000000
2326000000
2325000000
2324000000
2323000000
2322000000
2321000000
2320000000
2319000000
2318000000
2317000000
2316000000
2315000000
2314000000
2313000000
2312000000
2311000000
2310000000
2309000000
2308000000
2307000000
2306000000
2305000000
2304000000
2303000000Apparition des bactéries coccoïdes (ancêtres du phytoplancton)
2302000000
2301000000
2300000000
2299000000
2298000000
2297000000
2296000000
2295000000
2294000000
2293000000
2292000000
2291000000
2290000000
2289000000
2288000000
2287000000
2286000000
2285000000
2284000000
2283000000
2282000000
2281000000
2280000000
2279000000
2278000000
2277000000
2276000000
2275000000
2274000000
2273000000
2272000000
2271000000
2270000000
2269000000
2268000000
2267000000
2266000000
2265000000
2264000000
2263000000
2262000000
2261000000
2260000000
2259000000
2258000000
2257000000
2256000000
2255000000
2254000000
2253000000
2252000000
2251000000
2250000000
2249000000
2248000000
2247000000
2246000000
2245000000
2244000000
2243000000
2242000000
2241000000
2240000000
2239000000
2238000000
2237000000
2236000000
2235000000
2234000000
2233000000
2232000000
2231000000
2230000000
2229000000
2228000000
2227000000
2226000000
2225000000
2224000000
2223000000
2222000000
2221000000
2220000000
2219000000
2218000000
2217000000
2216000000
2215000000
2214000000
2213000000
2212000000
2211000000
2210000000
2209000000
2208000000
2207000000
2206000000
2205000000
2204000000
2203000000
2202000000
2201000000
2200000000
2199000000
2198000000
2197000000
2196000000
2195000000
2194000000
2193000000
2192000000
2191000000
2190000000
2189000000
2188000000
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2186000000
2185000000
2184000000
2183000000
2182000000
2181000000
2180000000
2179000000
2178000000
2177000000
2176000000
2175000000
2174000000
2173000000
2172000000
2171000000
2170000000
2169000000
2168000000
2167000000
2166000000
2165000000
2164000000
2163000000
2162000000
2161000000
2160000000
2159000000
2158000000
2157000000
2156000000
2155000000
2154000000
2153000000
2152000000
2151000000
2150000000
2149000000
2148000000
2147000000
2146000000
2145000000
2144000000
2143000000
2142000000
2141000000
2140000000
2139000000
2138000000
2137000000
2136000000
2135000000
2134000000
2133000000
2132000000
2131000000
2130000000
2129000000
2128000000
2127000000
2126000000
2125000000
2124000000
2123000000
2122000000
2121000000
2120000000
2119000000
2118000000
2117000000
2116000000
2115000000
2114000000
2113000000
2112000000
2111000000
2110000000
2109000000
2108000000
2107000000
2106000000
2105000000
2104000000
2103000000
2102000000
2101000000
2100000000Apparition des premiers métazoaires (êtres pluricellulaires)
Fin de l'ère glaciaire Huronienne (2500–2100 Ma)
2099000000
2098000000
2097000000
2096000000
2095000000
2094000000
2093000000
2092000000
2091000000
2090000000
2089000000
2088000000
2087000000
2086000000
2085000000
2084000000
2083000000
2082000000
2081000000
2080000000
2079000000
2078000000
2077000000
2076000000
2075000000
2074000000
2073000000
2072000000
2071000000
2070000000
2069000000
2068000000
2067000000
2066000000
2065000000
2064000000
2063000000
2062000000
2061000000
2060000000
2059000000
2058000000
2057000000
2056000000
2055000000
2054000000
2053000000
2052000000
2051000000
2050000000
2049000000
2048000000
2047000000
2046000000
2045000000
2044000000
2043000000
2042000000
2041000000
2040000000
2039000000
2038000000
2037000000
2036000000
2035000000
2034000000
2033000000
2032000000
2031000000
2030000000
2029000000
2028000000
2027000000
2026000000
2025000000
2024000000
2023000000
2022000000
2021000000
2020000000
2019000000
2018000000
2017000000
2016000000
2015000000
2014000000
2013000000
2012000000
2011000000
2010000000
2009000000
2008000000
2007000000
2006000000
2005000000
2004000000
2003000000
2002000000
2001000000
2000000000Début du règne des Acritarches (algues vertes)
1999000000
1998000000
1997000000
1996000000
1995000000
1994000000
1993000000
1992000000
1991000000
1990000000
1989000000
1988000000
1987000000
1986000000
1985000000
1984000000
1983000000
1982000000
1981000000
1980000000
1979000000
1978000000
1977000000
1976000000
1975000000
1974000000
1973000000
1972000000
1971000000
1970000000
1969000000
1968000000
1967000000
1966000000
1965000000
1964000000
1963000000
1962000000
1961000000
1960000000
1959000000
1958000000
1957000000
1956000000
1955000000
1954000000
1953000000
1952000000
1951000000
1950000000
1949000000
1948000000
1947000000
1946000000
1945000000
1944000000
1943000000
1942000000
1941000000
1940000000
1939000000
1938000000
1937000000
1936000000
1935000000
1934000000
1933000000
1932000000
1931000000
1930000000
1929000000
1928000000
1927000000
1926000000
1925000000
1924000000
1923000000
1922000000
1921000000
1920000000
1919000000
1918000000
1917000000
1916000000
1915000000
1914000000
1913000000
1912000000
1911000000
1910000000
1909000000
1908000000
1907000000
1906000000
1905000000
1904000000
1903000000
1902000000
1901000000
1900000000
1899000000
1898000000
1897000000
1896000000
1895000000
1894000000
1893000000
1892000000
1891000000
1890000000
1889000000
1888000000
1887000000
1886000000
1885000000
1884000000
1883000000
1882000000
1881000000
1880000000
1879000000
1878000000
1877000000
1876000000
1875000000
1874000000
1873000000
1872000000
1871000000
1870000000
1869000000
1868000000
1867000000
1866000000
1865000000
1864000000
1863000000
1862000000
1861000000
1860000000
1859000000
1858000000
1857000000
1856000000
1855000000
1854000000
1853000000
1852000000
1851000000
1850000000
1849000000
1848000000
1847000000
1846000000
1845000000
1844000000
1843000000
1842000000
1841000000
1840000000
1839000000
1838000000
1837000000
1836000000
1835000000
1834000000
1833000000
1832000000
1831000000
1830000000
1829000000
1828000000
1827000000
1826000000
1825000000
1824000000
1823000000
1822000000
1821000000
1820000000
1819000000
1818000000
1817000000
1816000000
1815000000
1814000000
1813000000
1812000000
1811000000
1810000000
1809000000
1808000000
1807000000
1806000000
1805000000
1804000000
1803000000
1802000000
1801000000
1800000000
1799000000
1798000000
1797000000
1796000000
1795000000
1794000000
1793000000
1792000000
1791000000
1790000000
1789000000
1788000000
1787000000
1786000000
1785000000
1784000000
1783000000
1782000000
1781000000
1780000000
1779000000
1778000000
1777000000
1776000000
1775000000
1774000000
1773000000
1772000000
1771000000
1770000000
1769000000
1768000000
1767000000
1766000000
1765000000
1764000000
1763000000
1762000000
1761000000
1760000000
1759000000
1758000000
1757000000
1756000000
1755000000
1754000000
1753000000
1752000000
1751000000
1750000000
1749000000
1748000000
1747000000
1746000000
1745000000
1744000000
1743000000
1742000000
1741000000
1740000000
1739000000
1738000000
1737000000
1736000000
1735000000
1734000000
1733000000
1732000000
1731000000
1730000000
1729000000
1728000000
1727000000
1726000000
1725000000
1724000000
1723000000
1722000000
1721000000
1720000000
1719000000
1718000000
1717000000
1716000000
1715000000
1714000000
1713000000
1712000000
1711000000
1710000000
1709000000
1708000000
1707000000
1706000000
1705000000
1704000000
1703000000
1702000000
1701000000
1700000000
1699000000
1698000000
1697000000
1696000000
1695000000
1694000000
1693000000
1692000000
1691000000
1690000000
1689000000
1688000000
1687000000
1686000000
1685000000
1684000000
1683000000
1682000000
1681000000
1680000000
1679000000
1678000000
1677000000
1676000000
1675000000
1674000000
1673000000
1672000000
1671000000
1670000000
1669000000
1668000000
1667000000
1666000000
1665000000
1664000000
1663000000
1662000000
1661000000
1660000000
1659000000
1658000000
1657000000
1656000000
1655000000
1654000000
1653000000
1652000000
1651000000
1650000000
1649000000
1648000000
1647000000
1646000000
1645000000
1644000000
1643000000
1642000000
1641000000
1640000000
1639000000
1638000000
1637000000
1636000000
1635000000
1634000000
1633000000
1632000000
1631000000
1630000000
1629000000
1628000000
1627000000
1626000000
1625000000
1624000000
1623000000
1622000000
1621000000
1620000000
1619000000
1618000000
1617000000
1616000000
1615000000
1614000000
1613000000
1612000000
1611000000
1610000000
1609000000
1608000000
1607000000
1606000000
1605000000
1604000000
1603000000
1602000000
1601000000
1600000000
1599000000
1598000000
1597000000
1596000000
1595000000
1594000000
1593000000
1592000000
1591000000
1590000000
1589000000
1588000000
1587000000
1586000000
1585000000
1584000000
1583000000
1582000000
1581000000
1580000000
1579000000
1578000000
1577000000
1576000000
1575000000
1574000000
1573000000
1572000000
1571000000
1570000000
1569000000
1568000000
1567000000
1566000000
1565000000
1564000000
1563000000
1562000000
1561000000
1560000000
1559000000
1558000000
1557000000
1556000000
1555000000
1554000000
1553000000
1552000000
1551000000
1550000000
1549000000
1548000000
1547000000
1546000000
1545000000
1544000000
1543000000
1542000000
1541000000
1540000000
1539000000
1538000000
1537000000
1536000000
1535000000
1534000000
1533000000
1532000000
1531000000
1530000000
1529000000
1528000000
1527000000
1526000000
1525000000
1524000000
1523000000
1522000000
1521000000
1520000000
1519000000
1518000000
1517000000
1516000000
1515000000
1514000000
1513000000
1512000000
1511000000
1510000000
1509000000
1508000000
1507000000
1506000000
1505000000
1504000000
1503000000
1502000000
1501000000
1500000000Début de l'augmentation du nombre d'organismes multicellulaires
1499000000
1498000000
1497000000
1496000000
1495000000
1494000000
1493000000
1492000000
1491000000
1490000000
1489000000
1488000000
1487000000
1486000000
1485000000
1484000000
1483000000
1482000000
1481000000
1480000000
1479000000
1478000000
1477000000
1476000000
1475000000
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Un des premiers supercontinents, Rodinia, se forme et puis de brise 250 millions d'années plus tard
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Ere glaciare Sturtienne Une période de multiple glaciations presque globales, avec des périodes de Terre "boule de neige" et "effet de serre" qui va durer environ 230 millions d'années.
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Les choanoflagelles se développent. Ils sont considérés les ancètres de tout le règne animal, spécifiquement les ancêtres direct des éponges
Il y a 481 jours de 18 heures dans une années terrienne. La rotation de la Terre à graduellement diminué depuis ce temps.
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780000000Fin de l'are glaciaire Sturtienne
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Début de l'ère glaciaire Précambienne Varagéenne
Cette ère glaciaire aurait été si sévère que les océans auraient gelé complètement, sauf au niveau des tropiques. Ca sera le dernier "big freeze", et ensuite l'évolution commence à àccélérer.
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600000000Apparition des éponges et des premiers vers
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580000000Fin de l'ère glaciaire Précambienne Varagéenne
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Formation de la couche d'ozone, permettant la première excursion majeure sur la terre ferme.
Le second supercontinent, Pannotia, se forme et se brise 30 millions d'années plus tard.
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542000000Début de l'ère (eon) phanérozoïque, divisées en:
  • Paléozoïque(542 Ma - 251.0 Ma)
  • Mézozoïque (251.0 Ma - 65.5 Ma)
  • Cénozoïque (65.5 Ma - présent)
Début de l'ère Paléozoïque
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L'explosion de la vie au Cambrien, un suivi rapide de changements évolutionnaires, crée la majeure partie des ancêtres des animaux modernes. La cause de cette expansion phénoménale dans la variété des formes de vies est encore débatu par les scientifiques. Les Arthropodes, représentés par une abondance de Trilobites, est la forme de vie avancée dominante.
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Apparitions des premiers vertébrés, poissons sans mâchoires et sans nageoires pectorales
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Premiers poissons à plaques osseuses et à mâchoire
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475000000Les plantes commencent à apparaitre sur la terre
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450000000Les Arthropodes, avec un exosquelette qui procure un support et prévient la perte d'eau, sont parmis les premiers animaux à marcher sur la terre ferme. Parmis les premiers, les milles-pattes, suivi plus tard par les scorpions et les araignées.
Dans les 10 millions d'années qui suivront, deux évènements d'extinction suivront. Mis ensembles, ils constituent le premier évènement d'extinction de masse, ou 70% de toute la vie sur terre disparaît, et marque la transition entre l'ordovicien et le silurien. Les causes sont multiples; radiation Gamma provenant d'une supernova, ère glaciaire, et destruction de la couche d'ozone.
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Apparition de la première forme de poisson encore vivant aujourd'hui, le Coelacanthe
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400000000Apparition des premiers insectes et des premiers requins
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Eusthenopteron (fossile trouvé a Miguasha), vit encore dans l'océan, mais sa lignée va conduire aux premier tétrapodes à marcher sur la terre.
Le plus ancien fossile d'arbre découvert date de cette époque.
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365000000Deuxième extinction de masse, probablement due à une ère glaciare, éradique 70% de la vie sur terre. Ceci marque la fin du dévonien
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360000000Apparition des fougères et premières plantes à graines
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Premiers tétrapodes quittent l'eau et marchent sur la terre ferme
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350000000Début de l'ère glaciare Karoo
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320000000Apparition des premières formes d'insectes terrestres
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310000000Apparition des premiers reptiles
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Formation du supercontinent Pangée
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293000000Formation des Appalaches
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290000000Premiers arbres conifères
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La libellule Protodonatan Meganeura monyi est parmis les plus gros insectes à avoir existé, avec une envergure de 2 pieds (60 cm)
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251000000Fin de l'ère glaciare Karoo
Fin de l'ère Paléozoïque et début du Mézozoïque
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Activité volcanique intense qui modifie l'Atmosphère et provoque des chagement climatiques dramatiques, et la disparition de 90% des formes de vie. Troisième évènement d'extinction de masse, marquant la transition entre le permien et le triassique.
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Pangée (le dernier des supercontinent) commence à se briser en plusieurs masses plus petites, qui deviendront plus tard les continent actuels
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Début de l'âge des dinosaures
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214000000Impact d'astéroide dans la région qui est maintenant le Québec (Manicouagan), créant un cratère de 70km de diamètre.
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Quatrième évènement d'extinction de masse, qui marque la transition entre le triassique et le jurassique. Probablement du à une importante activité volcanique qui a contribué à faire disparaitre environ 50% des espèces vivant à cette epoque.
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204000000Apparition des dinosaures aériens et marins
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200000000Apparition des premiers mammifères
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181000000Apparition de la famille des palmiers
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Les oiseaux évoluent à partir de dinoasaures théropodes. L'archaéopteryx probablement l'ancêtre des oiseaux, avec des griffes, des plumes, mais pas de bec.
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130000000Apparition des premières plantes à fleurs (angiosperm)
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120000000Apparition des oiseaux et marsupiaux
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107000000Formation de l'Atlantique Sud
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90000000Apparition des premières plantes à fleurs
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88000000Formation de l'Atlantique Nord
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Impact d'astéroide à la péninsule du Yucatan (Mexique), créant un cratère de près de 170km, causant une dévastation globale et l'extinction des dinosaures, en même temps que 85% de la vie sur terre et 50% des espèces. C'est le cinquième et dernier(?) évènement d'extinction de masse.
La disparition des dinosaures a permis aux mammifères de se développer, de s'accroître en taille et en diversité.
Fin du Mézozoïque et début du Cénozoïque
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50000000Premiers singes primitifs
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35000000Apparition de l'herbe
34000000Une couche de glace commence à se former sur l'Antartique
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Formation de plusieurs chaines de montagnes importantes, comme les Andes et les Himalayas. Les Himalayas se sont formé quand l'inde est entré en collision avec le continent asiatique
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20000000Séparation de l'Australie de l'Antarctique
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5000000
4000000
Plus anciens fossiles d'hominides (ancêtres des humains) trouvés
3000000
2000000Homo Erectus, ancêtre probable de l'homme moderne, évolue en Afrique, et émigre ensuite vers les autres continents
1000000


Comme vous voyez, nous ne sommes que peu de chose, Si on rapportait l'histoire de la terre sur une année, l'apparition de l'homme n'y représenterait que quelques secondes.


Pour plus de détails, voyez ces documents :
Wikipédia
Extinctions de masse
National Geographic: When life cam to an end