Hauptrogenstein Formation Explained

Hauptrogenstein Formation
Type:	Formation
Age:	Middle Jurassic,
Period:	Bajocian
Prilithology:	Limestone, Wackestone
Country:
Subunits:	Lower Acuminata beds^[1] (subfurcatum/niortense zone) Parkinsoni-Schichten (parkinsoni zone) Obere Acuminata-Schichten
Underlies:	Spatkalk
Overlies:	Wildegg Formation

The Hauptrogenstein Formation is a geologic formation in Germany and Switzerland.^[2] It preserves fossils that date back to the Middle Jurassic period (Bajocian-Bathonian).^[3]

Paleofauna

List as per Miedema et al. (2024):

• Argovisaurus martafernandezi
• Bakevelliidae indet.
• Bivalvia indet.
• Ectocochleate cephalopods
• Gervillella
• Goniomya literata
• Homomya
• Lockeia?
• Lytoceras cf. eudesianum
• Megateuthis suevica
• Nautilida indet.
• Parkinsonia (Oraniceras) fretensis
• Pleuromya
• Praeexogyra acuminata
  • Procerites sp. Teichichnus?
• Terebratula furcilensis
• Terebratula movelierensis
• Thalassinoides
• Trigoniidae indet.

See also

• List of fossiliferous stratigraphic units in Germany

Notes and References

1. Gonzalez R, Wetzel A. (1996). Stratigraphy and paleogeography of the Hauptrogenstein and Klingnau Formations (middle Bajocian to late Bathonian), northern Switzerland. Eclogae Geol Helv. 1996;89:695–720.
2. Web site: ((Various Contributors to the Paleobiology Database)) . Fossilworks: Gateway to the Paleobiology Database . 8 July 2014 . 25 March 2022 . https://web.archive.org/web/20220325060448/http://www.fossilworks.org/cgi-bin/bridge.pl?action=home . dead .
3. Miedema . Feiko . Bastiaans . Dylan . Scheyer . Torsten M. . Klug . Christian . Maxwell . Erin E. . 2024-03-16 . A large new Middle Jurassic ichthyosaur shows the importance of body size evolution in the origin of the Ophthalmosauria . BMC Ecology and Evolution . 24 . 1 . 34 . 10.1186/s12862-024-02208-3 . 2730-7182 . 38493100 . free. 10944604 .