|fossil_range = [[Kampanium]]-[[Maastrichtium]], {{fossil range|82.7|6665.0}}<ref name=GeologicTime>{{cite book|author1=James G. Ogg|author2=Linda A. Hinnov|title=Cretaceous|year=2012|pages=793–853|journal=The Geologic Time Scale 2012|doi=10.1016/B978-0-444-59425-9.00027-5|isbn=9780444594259}}</ref><ref name=Gallagher2005>{{cite journal|author=William B. Gallagher|title=Recent mosasaur discoveries from New Jersey and Delaware, USA: stratigraphy, taphonomy and implications for mosasaur extinction|year=2005|journal=Netherlands Journal of Geosciences|volume=84|issue=3|pages=241–245|doi=10.1017/S0016774600021028|doi-access=free}}</ref><ref name=Gallagher1984>{{cite journal|author=William B. Gallagher|title=Paleoecology of the Delaware Valley region, Part II: Cretaceous to Quaternary|year=1984|journal=The Mosasaur|volume=2|issue=1|pages=9–43|url=https://docs.google.com/viewer?a=v&pid=sites&srcid=ZGVmYXVsdGRvbWFpbnxkdnBzcGFsZW98Z3g6NzMyMmYyZDM2ZGE0MWE5MA}}</ref><ref name=Obasietal>{{cite journal|author1=Christian C. Obasi|author2=Dennis O. Terry Jr.|author3=George H. Myer|author4=David E. Grandstaff|title=Glauconite Composition and Morphology, Shocked Quartz, and the Origin of the Cretaceous(?) Main Fossiliferous Layer (MFL) in Southern New Jersey, U.S.A.|year=2011|journal=Journal of Sedimentary Research|volume=81|issue=1|pages=479–494|doi=10.2110/jsr.2011.42|bibcode=2011JSedR..81..479O}}</ref>
|image = Mosasaurus hoffmannii - skeleton.jpg
|image_caption = Reconstruksi tengkorak ''M. hoffmannii'' di [[Maastricht Natural History Museum]]
