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The youngest in situ record to date of Mosasaurus hoffmanni (Squamata, Mosasauridae) from the Maastrichtian type area, the Netherlands

Jagt, J.W.M.; Cornelissen, D.; Mulder, E.W.A.; Schulp, A.S.; Severijns, J.; Verding, L.

Year2008
Source roleprimary-study
DOI / IDjagt-et-al-2008-youngest-mosasaurus

Fitness and scope

range · biogeography

Pages 73–77 and Figures 1–2 document Mosasaurus hoffmanni NHMM 2007 093 from the highest metre of the Meerssen Member, within one metre below the regional K/Pg boundary; this is a sampled latest occurrence, not an exact family-wide extinction instant.

Claim ledger

fossil-range · medium

The 92–66 Ma Mosasauridae display is a two-study sampled envelope: two Dallasaurus skeletons document a middle Turonian (~92 Ma) occurrence, and Mosasaurus hoffmanni NHMM 2007 093 occurs within one metre below the regional K/Pg boundary; neither edge is an exact global family FAD or LAD.

claim:taxon:mosasauridae:fossil-range
biogeography · medium

The profile's geographic examples are restricted to middle Turonian Dallasaurus skeletons from north-central Texas and latest-Maastrichtian Mosasaurus hoffmanni NHMM 2007 093 from the Maastricht type area; they are not a complete Mosasauridae distribution map.

claim:taxon:mosasauridae:biogeography
biogeography · high

The profile's named mosasauroid samples include Dallasaurus turneri from the middle Turonian Arcadia Park Shale of north-central Texas and a latest Maastrichtian Mosasaurus occurrence from the Maastricht type area of the Netherlands; these records do not establish a global Mosasauroidea distribution.

claim:taxon:mosasauroidea:biogeography
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