Difference between revisions of "Template:Cambrian explosion graphical timeline"
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imported>Smith609 (Plural hyolith) |
imported>Alnagov (++) |
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| Line 272: | Line 272: | ||
|note5-nudge-down=0.3 | |note5-nudge-down=0.3 | ||
| − | |note6=[[ | + | |note6=[[Sirius Passet]] and [[Chengjiang biota|Chengjiang]] biotas |
|note6-at=-523 | |note6-at=-523 | ||
|note6-size=75% | |note6-size=75% | ||
| + | |note6-nudge-down=-0.3 | ||
| − | |note7=First [[Trilobites]] | + | |note7=First arthropods with mineralized [[carapace]] ([[Trilobites]]) |
|note7-at=-526 | |note7-at=-526 | ||
|note7-size=75% | |note7-size=75% | ||
| − | |note7-nudge-down=0.3 | + | |note7-nudge-down=-0.3 |
| − | |note8=[[Small shelly fauna|SSF]] diversification, first [[brachiopod]]s & [[archaeocyatha]] | + | |note8=[[Small shelly fauna|SSF]] diversification, first [[brachiopod]]s & [[archaeocyatha]], ''[[Rusophycus]]'' traces & more complex vertical burrows |
|note8-at=-535 | |note8-at=-535 | ||
|note8-size=75% | |note8-size=75% | ||
| − | |note8-nudge-down=- | + | |note8-nudge-down=-3.3 |
|note9= First [[halkieriid]]s, [[Helcionelloida|mollusсs]], [[hyolith]]s [[Small shelly fauna|SSF]] | |note9= First [[halkieriid]]s, [[Helcionelloida|mollusсs]], [[hyolith]]s [[Small shelly fauna|SSF]] | ||
|note9-at=-537 | |note9-at=-537 | ||
|note9-size=75% | |note9-size=75% | ||
| − | |note9-nudge-down=0. | + | |note9-nudge-down=0.5 |
|note10=''[[Treptichnus pedum]]'' trace | |note10=''[[Treptichnus pedum]]'' trace | ||
Revision as of 11:14, 7 March 2011
Key Cambrian explosion events
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One possible timescale for events around the Cambrian/Precambrian boundary.
Axis scale: millions of years ago.
Stratigraphic scale of the ICS with Russian Lower Cambrian subdivision and Precambrian/Cambrian boundary.