Abdullah Gohar

Abstract INTRODUCTION RESULTS DISCUSSION MATERIALS AND METHODS Acknowledgments Supplementary Materials REFERENCES Information & Authors Metrics & Citations View Options References Figures Tables Media Share Abstract The Cretaceous-Paleogene (K-Pg) extinction reshaped Earth’s biodiversity, yet its impact on marine fishes remains debated due to gaps in the Paleocene record.

DATA AVAILABILITY STATEMENT The data that support the findings of this study are openly available in Figshare at https://figshare.com/s/4d03204dc28c5fcf69c9. Supporting Information Filename Description joa70112-sup-0001-Supinfo.pdfPDF document, 2.2 MB Figure S1. REFERENCES , , , , , et al. (2022) The enrichment of knowledge about the microstructure of brown bear compact bone tissue. The European Zoological Journal, 89, 615–624.

Abstract Soon after whales originated from small terrestrial artiodactyl ancestors, basal stem forms (archaeocetes) came to inhabit more specialized aquatic ecologies and underwent a tremendous adaptive radiation that culminated in the adoption of a fully aquatic lifestyle. This adaptive strategy is first documented by the geographically widespread extinct family Basilosauridae. Here we report a new basilosaurid genus and species, Tutcetus rayanensis, from the middle Eocene of Fayum, Egypt.