Paleobiology and taphonomy of the pycnodont fish Nursallia gutturosum, based on material from the Latest-Cenomanian-middle Turonian Vallecillo platy limestone, Mexico

The platy limestone deposit of Vallecillo, located in north-eastern Mexico, offers a wide variety of invertebrate and vertebrate species dated to the latest Cenomanian-middle Turonian (Late Cretaceous). The deposit is known to contain well preserved fossils, e.g., fishes, in which the bones are recrystallized to calcite but soft tissue is also preserved. The fish assemblage is dominated by pelagic fast swimmers but also includes the common...