Aalenian
The Aalenian (Template:PronEng) is a subdivision of the Middle Jurassic epoch 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 era and succeeded by the Bajocian.
The stage takes its name from the town of Aalen, some 100 km east of Stuttgart in Germany. The town lies at the southwestern end of the Frankischer Jura.
Invertebrate Fauna
Ammonitids
†Ammonitids of the Aalenian | ||||
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Confirmed.[1] | The only known species in this Alaskan genus. Abbasites is believed to be ancestral to the ammonite family Otoitidae. | ||
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Confirmed.[1] | Synonymous with a modern plant genus. | ||
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Belemnites
Belemnites of the Aalenian | ||||
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Confirmed.[1] | This Eurasian species was the largest known Belemnite and could grow to lengths of up to 10 feet. | ||
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Vertebrate Fauna
Thalattosuchians
Thalattosuchia of the Aalenian | ||||
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References
- ^ 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 z aa ab ac ad ae af ag ah ai aj ak al am Sepkoski, Jack (2002). "A compendium of fossil marine animal genera (entry on cephalopoda)". Bulletins of American Paleontology. 364: p.560.
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