Invertebrate paleontology has long been my major interest, particularly the taphonomic and paleoecological analysis of fossil assemblages and their applications in paleoenvironmental reconstructions. My initial academic instruction was in Biology, which led to my research studies of past organisms, ecosystems, and environmental changes as a basis for elucidating the history and diversity of life on Earth and how it can be applied to biodiversity and geodiversity conservation projects.My research has been both collaborative and interdisciplinary. It currently includes 10 major areas: taphonomy, paleoecology, paleoenvironmental changes, natural (geological, paleontological, and biological) heritage, geoconservation and geodiversity, paleobiodiversity, paleobiogeography, taxonomy of brachiopods and trilobites, sedimentology, and stratigraphy. I have participated in several research projects on the Silurian, Devonian, and Pennsylvanian paleontology and stratigraphy of the principal Brazilian intracratonic basins (Amazon, Parnaíba, and Paraná).