Stadthagen Formation

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Stadthagen Formation
Stratigraphic range: Valanginian,
~132  Ma
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Type Geological formation
Unit of Lower Saxony Basin
Sub-units
  • Platylenticeras involutum ammonite zone
  • Platylenticeras heteropleurum ammonite zone
  • Platylenticeras robustum ammonite zone
Overlies Bückeberg Formation and Isterberg Formation
Location
Coordinates 52°23′50″N9°16′06″E / 52.3972°N 9.2683°E / 52.3972; 9.2683
Region Hanover, Germany
Country Germany
Extent Engelbostel and Sachsenhagen clay pits

The Stadthagen Formation is a geological formation located in Hanover, Germany, dating to the Early Cretaceous (Valanginian). [1] The formation contains fossils of reptiles and fish, suggesting that the formation was once a shallow marine setting. [2]

Contents

History

The Stadthagen Formation outcrops in the Engelbostel and Sachsenhagen clay pits, which operated as brickworks from 1904 to 1986. After the brickworks closed in 1986, most of the quarry area was backfilled and used as a waste dump before being abandoned. [2]

Paleobiota of the Stadthagen Formation

GenusSpeciesLocationStratigraphic positionMaterialNotesImage
Actinopterygii [3] Indeterminate Sachsenhagen
Crocodylomorpha [4] IndeterminateSachsenhagenKnown from remains currently located within private collections.
Enalioetes [1] E. schroederi Engelbostel Much of the skull as well as parts of the neck.Previously known as Enaliosuchus "schroederi" and Cricosaurus "schroederi". Skull of Enalioetes schroederi.jpg
Enaliosuchus [5] E. macrospondylusAn atlas-axis complex, three post-axial cervical vertebrae, several dorsal vertebrae, a caudal vertebra, an incomplete femur and a fragmentary sacral rib.Its remains have also been recovered from the Campylotoxus Zone of France. Enaliosuchus vertebra holotype.png
Gyrodus [6] G. sp.EngelbostelNearly complete specimen.
Plesiosauria [4] Indeterminate [4] Sachsenhagen
Targaryendraco [2] T. wiedenrothiEngelbostel and Sachsenhagen Platylenticeras robustum and P. heteropleurum ammonite zonesPartial skeleton with lower jaws.Previously known as Ornithocheirus wiedenrothi. Targaryendraco.jpg

References

  1. 1 2 Sachs, S.; Young, M.T.; Hornung, J.J.; Cowgill, T.; Schwab, J.A.; Brusatte, S.L. (2024). "A new genus of metriorhynchid crocodylomorph from the Lower Cretaceous of Germany". Journal of Systematic Palaeontology. 22 (1). doi:10.1080/14772019.2024.2359946.
  2. 1 2 3 Pêgas, R.V., Holgado, B., Leal, M.E.C., (2019). "Targaryendraco wiedenrothi gen. nov. (Pterodactyloidea, Pteranodontoidea, Lanceodontia) and recognition of a new cosmopolitan lineage of Cretaceous toothed pterodactyloids", Historical Biology, 1–15. doi:10.1080/08912963.2019.1690482
  3. ↑ Frerichs, U. (2017a). Fische. Arbeitskreis Paläontologie Hannover 45: 59–62.
  4. 1 2 3 Frerichs, U. (2017b). Reptilien. Arbeitskreis Paläontologie Hannover 45: 63–68.
  5. ↑ Koken E. (1883). Die reptilian der norddeutschen unteren Kreide. Zeitschrift deutschen Geologischen Gesellschaft35: 735-827.
  6. ↑ Hornung, Jahn & Hannover, Landesmuseum & Brandt-Allee, Willy. (2021). Pycnodont fishes (Actinopterygii: Pycnodontiformes) from the Lower Cretaceous of northern Germany - diversity and palecological relationships. 58. 4-77.
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