Here is described the first dinosaur evidence from Chiapas, and also the southernmost evidence of dinosaurs in Mexico. A small theropod tooth, identified as Richardoestesia isosceles, based on its shape and the presence of small denticles on the mesial and…

Foraminifera from samples collected in the lower part of the Ocozocoautla Formation were studied. This sequence crops out north-west of Tuxtla Gutiérrez in central part of Chiapas state in south-eastern Mexico. The lower part of the unit consists mostly of…

The small Maastrichtian coral fauna of Ocozocoautla (Chiapas, Mexico) is being taxonomically reviewed. In contrast to an older study, the material is examined by preparing thin sections and carrying out systematic measurements to ensure that any comparisons of the material…