1. 
   Aalenian
   The lowest stage of the M. Jurrasic (dogger) 178.0 - 173.5 Ma
   Found op http://www.quartznall.co.uk/azhealthguide.htm
   
   
2. 
   Aalenian
   The Aalenian n is a subdivision of the Middle Jurassic epoch/series of the geologic timescale that extends from about 175.6 Ma to about 171.6 Ma (million years ago). It was preceded by the Toarcian and succeeded by the Bajocian. ==Stratigraphic definitions== The Aalenian takes its name from the tow...
   Found op http://en.wikipedia.org/wiki/Aalenian
   
   
3. 
   aalenian
   1) The lowest stage of the m. jurrasic 178.0
   Found op 173.5 ma
   
   

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