Hornerstown Formation

Hornerstown Formation
Hornerstown Formation
Stratigraphic range: latest Maastrichtian-Danian;
Type	Geological formation
Unit of	Rancocas Group
Underlies	Vincentown Formation
Overlies	New Egypt Formation, Navesink Formation and Tinton Formation
Lithology
Primary	Marl, greensand
Location
Region	New Jersey
Country	United States
Type section
Named for	Hornerstown, New Jersey

The Hornerstown Formation is a latest Cretaceous to early Paleocene-aged geologic formation in New Jersey. It preserves a variety of fossil remains, including those of dinosaurs, and contains direct evidence of the mass mortality that occurred at the Cretaceous-Paleogene boundary.^[2]^[3]^[4]

Outcrops of the Hornerstown Formation are known from sites such as Edelman Fossil Park.^[5]

^ Gentry, A.D.; Kiernan, C.R.; Parham, J.F. (2022). "A large non-marine turtle from the Upper Cretaceous of Alabama and a review of North American "Macrobaenids"". The Anatomical Record. 306 (6): 1411–1430. doi:10.1002/ar.25054. PMID 37158131.
^ Weishampel, et al. (2004). "Dinosaur distribution." Pp. 517-607.
^ Boles, Zachary; Ullmann, Paul; Putnam, Ian; Ford, Mariele; Deckhut, Joseph (2024-04-12). "New vertebrate microfossils expand the diversity of the chondrichthyan and actinopterygian fauna of the Maastrichtian–Danian Hornerstown Formation in New Jersey". Acta Palaeontologica Polonica. doi:10.4202/app.01117.2023.
^ Staron, Richard M.; Grandstaff, Barbara S.; Gallagher, William B.; Grandstaff, David E. (2001). "REE Signatures in Vertebrate Fossils from Sewell, NJ: Implications for Location of the K-T Boundary". PALAIOS. 16 (3): 255–265. doi:10.2307/3515603. ISSN 0883-1351.
^ Voegele, Kristyn K.; Ullmann, Paul V.; Lonsdorf, Tara; Christman, Zachary; Heierbacher, Michael; Kibelstis, Brian J.; Putnam, Ian; Boles, Zachary M.; Walsh, Shane; Lacovara, Kenneth J. (2021-11-01). "Microstratigraphic Analysis of Fossil Distribution in the Lower Hornerstown and Upper Navesink Formations at the Edelman Fossil Park, NJ". Frontiers in Earth Science. 9: 1033. Bibcode:2021FrEaS...9.1033V. doi:10.3389/feart.2021.756655. ISSN 2296-6463.