A specimen-level phylogenetic analysis and taxonomic revision of Diplodocidae (Dinosauria, Sauropoda)

Diplodocidae is represented by Tschopp and colleagues’ specimen-level matrix and explicit criteria for revising genera and species; the operational taxonomy is analysis-dependent and not a complete fossil-range audit.

Diplodocidae is displayed at 168–125 Ma only as the broad stage envelope of the revision's specimen sample, not a claim of continuous occupancy or exact family endpoints. The interval is a source-bounded sample window, not a global FAD, LAD, divergence date, continuous occupancy claim or direct-ancestor assertion.