Aalenian

The lowest stage of the M. Jurrasic (dogger) 178.0 - 173.5 Ma
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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 town of Aalen, some 70 km east of Stuttgart in German...
Found on http://en.wikipedia.org/wiki/Aalenian
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