Coordinates: 52°23′50″N 9°16′06″E / 52.3972°N 9.2683°E / 52.3972; 9.2683

Stadthagen Formation

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Stadthagen Formation
Stratigraphic range: Valanginian,
~132 Ma
↓
TypeGeological formation
Unit ofLower Saxony Basin
Sub-units
  • Platylenticeras involutum ammonite zone
  • Platylenticeras heteropleurum ammonite zone
  • Platylenticeras robustum ammonite zone
OverliesBückeberg Formation and Isterberg Formation
Location
Coordinates52°23′50″N 9°16′06″E / 52.3972°N 9.2683°E / 52.3972; 9.2683
RegionHanover, Germany
Country Germany
ExtentEngelbostel 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]

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

Genus Species Location Stratigraphic position Material Notes Image
Actinopterygii[3] Indeterminate[3] Sachsenhagen
Crocodylomorpha[4] Indeterminate[4] Sachsenhagen[4] Known from remains currently located within private collections.[2]
Enalioetes[1] E. schroederi[1] Engelbostel[1] "Much of the skull as well as parts of the neck."[1] Previously known as Enaliosuchus "schroederi" and Cricosaurus "schroederi".[5]
Gyrodus[6] G. sp.[6] Engelbostel[6] "Nearly complete specimen."[6]
Plesiosauria[4] Indeterminate[4] Sachsenhagen[4]
Targaryendraco[2] T. wiedenrothi[2] Engelbostel and Sachsenhagen[2] Platylenticeras robustum and P. heteropleurum ammonite zones "Partial skeleton with lower jaws."[2] Previously known as Ornithocheirus wiedenrothi.[7]

References

  1. ^ a b c d e 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. ^ a b c d e f g 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. ^ a b Frerichs, U. (2017a). Fische. Arbeitskreis Paläontologie Hannover 45: 59–62.
  4. ^ a b c d e f Frerichs, U. (2017b). Reptilien. Arbeitskreis Paläontologie Hannover 45: 63–68.
  5. ^ Young, Mark T., and Marco Brandalise de Andrade, (2009). "What is Geosaurus? Redescription of Geosaurus giganteus (Thalattosuchia: Metriorhynchidae) from the Upper Jurassic of Bayern, Germany." Zoological Journal of the Linnean Society, 157: 551-585.
  6. ^ a b c d 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.
  7. ^ Wild, R. (1990). "Pterosaur remains (Reptilia, Pterosauria) from the Lower Cretaceous (Hauterivian) of Hannover (Lower Saxony)". Neues Jahrbuch für Geologie und Paläontologie, Abhandlungen, 181: 241–254
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