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La Pedrera and La Cabrua at El Montsec, Spain, are two Lower Cretaceous lacustrine conservation deposits (Konservat-Lagerstatten) that have provided a rich, diverse, and well-preserved faunal and floral fossil record. Although the lithographic limestones where the body fossils are found are finely laminated and essentially undisturbed by bioturbation, epigenic trace fossils occur on the surface of...