Bückeberg Formation
Stratigraphic range: Berriasian ~145–140 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
Type	Formation
Unit of	Lower Saxony Basin
Sub-units	Ostenwald & Obernkirchen Sandstein Members
Underlies	Stadthagen Formation
Overlies	Münder Formation
Thickness	Over 500 m (1,600 ft)
Lithology
Primary	Mudstone
Other	Sandstone, coal
Location
Coordinates	52°18′N 9°12′E / 52.3°N 9.2°E / 52.3; 9.2
Approximate paleocoordinates	43°30′N 17°12′E / 43.5°N 17.2°E / 43.5; 17.2
Region	Niedersachsen, Nordrhein-Westfalen
Country	Germany
Bückeberg Formation (Germany)

The Bückeberg Formation is a geologic formation and Lagerstätte^[1] in Germany. It preserves fossils dating back to the Berriasian of the Cretaceous period.^[2] The Bückeberg Formation has previously been considered to constitute the "German Wealden" in reference to its similarity to the Wealden Group in the United Kingdom.^[3] More recently it has been considered a group, containing the Isterberg and Deister Formations. The plesiosaur Brancasaurus,^[4] an indeterminate ankylosaur referred to Hylaeosaurus,^[5] the turtle Dorsetochelys are known from the formation.

• List of fossiliferous stratigraphic units in Germany

• Sachs, S.; Hornung, J.J.; Kear, B.P. (2016), "Reappraisal of Europe's most complete Early Cretaceous plesiosaurian: Brancasaurus brancai Wegner, 1914 from the "Wealden facies" of Germany", PeerJ, 4: e2813, doi:10.7717/peerj.2813, PMC 5183163, PMID 28028478
• Sachs, Sven; Hornung, Jahn J. (2013), "Ankylosaur Remains from the Early Cretaceous (Valanginian) of Northwestern Germany", PLoS ONE, 8 (4): e60571, doi:10.1371/journal.pone.0060571, ISSN 1932-6203, PMC 3616133, PMID 23560099
• Reitner, Joachim; Qun, Yang; Yongdong, Wang; Reich, Mike (2013), Palaeobiology and Geobiology of Fossil Lagerstätten through Earth History (PDF), Universitätsverlag Göttingen, pp. 1–218, ISBN 978-3-86395-135-1, retrieved 2020-09-15
• Hornung, Jahn J.; Böhme, Annina; van der Lubbe, Torsten; Reich, Mike; Richter, Annette (2012), "Vertebrate tracksites in the Obernkirchen Sandstone (late Berriasian, Early Cretaceous) of northwest Germany— their stratigraphical, palaeogeographical, palaeoecological, and historical context", Paläontologische Zeitschrift, 86 (3): 231–267, Bibcode:2012PalZ...86..231H, doi:10.1007/s12542-012-0131-7, ISSN 0031-0220
• Richter, Annette (2011), The 'German Wealden' and the Obernkirchen Sandstone – an Introduction in Dinosaur Tracks 2011: an international symposium, Obernkirchen, April 14-17, 2011 : abstract volume and field guide to excursions, Universitätsverlag Göttingen, ISBN 978-3-86395-105-4 OCLC 852208407