Estimating deep-time species-level diversification processes remains challenging. Both the
fossil record and molecular phylogenies allow the estimation of speciation and extinction …

Nowadays, the requiem sharks comprise one of the most diverse and widespread families of
selachians, ie, Carcharhinidae. Among the carcharhinids, the genus Carcharhinus has the …

Marine basins that existed in present-day Ukraine during the Eocene harboured various
groups of cartilaginous and bony fishes, reptiles, aquatic birds, and marine mammals. Fish …

Matrix surrounding a dermochelyid carapace and two cetacean skulls recovered from the
Givhans Ferry Member of the Ashley Formation (lower Oligocene, Rupelian Stage) in South …

ABSTRACT A new chondrichthyan assemblage comprising 27 genera is described from the
Middle Eocene Osinovaya Formation of the Bystraya River Basin, Morozovsk District of …

The upper part of the Harudi Formation of the Kutch basin in Gujarat, western India, has
recently yielded a heretofore undocumented assemblage of elasmobranchs, including …

Twenty six species of “megascopic” elasmobranchs have been identified, described and
figured, and a local biostratigraphic scheme has been constructed. Ginglymostoma …

Isolated elasmobranch teeth (sharks and rays) from the middle Eocene (Bartonian) Bandah
Formation in the Jaisalmer District of Rajasthan, India are described. The remains improve …

The Pontils fossil site (middle Eocene, Ebro Basin, Spain) includes several vertebrate-
bearing levels situated in a sequence recording a continental to marine transition. Although …

Evaluation of two historical collections of Louisiana vertebrate fossils housed in museum
repositories revealed the presence of Paleogene shark and ray taxa that were heretofore …