Hartl Formation
The Hartl Formation is a geologic formation in Austria. It preserves fossils dated to the Langhian stage of the Miocene period.

See also 
 List of fossiliferous stratigraphic units in Austria

References

Further reading 
 A. Kroh. 2003. First record of gorgonocephalid ophiuroids (Echinodermata) from the middle Miocene of the Central Paratethys. Cenozoic Research 2(1-2):143-155

Geologic formations of Austria
Miocene Series of Europe
Neogene Austria
Langhian
Paleontology in Austria