Integrative Levels Classification project scheme how it works León Manifesto references

ILC developing version
Expanded class i1

    broader class

          i1       in era; period  [geochronology; stratigraphy]  ↞ bbx more than billions years
          i1X            geological periods; stratigraphical systems
          i1XX                 geological epochs; stratigraphical series
          i1XXX                      geological ages; stratigraphical stages
          i1c            Precambrian; >542 Ma
          i1cd                 Hadean; 4550-4000 Ma
          i1ch                 Archean; 4000-2500 Ma
          i1cp                 Proterozoic; 2500-542 Ma
          i1dWy            Phanerozoic; 542-0 Ma
          i1d            Palaeozoic; 542-251 Ma
          i1dc                 Cambrian; 542-488 Ma
          i1dd                 Ordovician; 488-443 Ma
          i1di                 Silurian; 443-416 Ma
          i1dn                 Devonian; 416-359 Ma
          i1do                 Carboniferous; 359-299 Ma
          i1dp                 Permian; 299-251 Ma
          i1e            Mesozoic; 250-65 Ma
          i1ed                 Triassic; 250-210 Ma
          i1ej                 Jurassic; 210-140 Ma
          i1er                 Cretaceous; 140-65 Ma
          i1f            Tertiary; 65-1.7 Ma
          i1fbWɭ                 Paleogene; Palaeogene; Lower Tertiary; 65-23 Ma
          i1fb                 Paleocene; Palaeocene; 65-56 Ma
          i1fe                 Eogene; 56-33 Ma
          i1fɭ                 Oligocene; 33-23 Ma
          i1fmWp                 Neogene; 23-2.5 Ma
          i1fm                 Miocene; 23-5.3 Ma
          i1fmg                      Aquitanian; 23.0-20.4 Ma
          i1fmi                      Burdigalian; 20.4-15.9 Ma
          i1fmɭ                      Langhian; 15.9-13.8
          i1fms                      Serravallian; 13.8-11.6
          i1fmt                      Tortonian; 11.6-7.2 Ma
          i1fmw                      Messinian; 7.2-5.3 Ma
          i1fp                 Pliocene; 5.3-2.5 Ma
          i1fpn                      Zanclean; 5.3-3.6 Ma
          i1fpp                      Piacenzian; 3.6-2.5 Ma
          i1g            Quaternary; 1.7-0.01 Ma
          i1ge                 Pleistocene; 2.5-0.01 Ma
          i1geg                      Gelasian; 2.5-1.8 Ma
          i1geɭ                      Calabrian; 1.8-0.78 Ma
          i1gen                      Ionian; 0.78-0.12 Ma
          i1get                      Tarantian; 0.12-0.01
          i1gh                 Holocene; 0.01-0 Ma  
Connected classes:
                 18  [i1]      in age; geological era
                 i91  [i1]           formed in era
                 j13  [i1]           formed in era
                 m91  [i1]           lived in; existed in era  [palaeontology]
                 n13  [i1]           appeared; originated in period
                 n134  [i1]                extincted in period
                 n181  [i1]                in era
                 w1      in historical period; calendar time; epoch  ↞ i1gh bbxprsvxw 

current: 99 



Move to another main class:
      a  b  c  d  e  f  g  h  i  j  k  l  m  n  o  p  q  r  s  t  u  v  w  x  y


or insert a term  and do a new

Facets key
0  as for perspective +
1  at time            +
2  in place           +
3  by agent           +
4  opposed to         +
5  undergoing change  +
6  having property    +
7  with part          +
8  in quantity        +
9  of quality         +


ILC developing version. Expanded class i1 / — ISKO Italia <> : 2006.03.06 - 2021.12.09 -