![]() ![]() The phylogenetic analysis shows that istiophorids are grouped into four clades: the Istiophorus clade, which includes the sailfish the Machairostra clade, which comprises Makaira spp., including two new species from the late Miocene (†Makaira colonense sp. Our results demonstrate that istiophorid richness is larger than previously assumed, comprising eight genera with 15 species. Here, we present a new phylogenetic hypothesis covering fossil and living istiophorids. Nevertheless, little is known about their evolution because of a fragmentary fossil record and extremely difficult taxonomy of fossil species. nov., suggesting a trans-Panamanian distribution for this extinct shark species.Įxtant istiophorids are open ocean apex predators that are extensively studied due to their ecological importance and high values for fisheries. A carcharhinid tooth from the Burdigalian to lower Langhian Cantaure Formation of Venezuela is reassigned to C. appears less akin to that of most other carcharhines to the cutting-clutching type, and seemingly testifies to the development of more predominantly clutching adaptations. are typically provided with a slender, smooth-edged cusp a marked coronal twist and a distal heel that bears 1–5 coarse, angularly lobate serrae that become more prominent toward the base of the cusp. nov., based on fossil teeth from Lower Miocene (18.4–18.1 Ma) strata of the Chilcatay Formation of the East Pisco Basin (southern Peru). Here, we describe a new species of requiem shark, Carcharhinus dicelmai sp. ![]() Known from fossils as old as the Cretaceous, the requiem sharks did not significantly radiate before the Eocene (when Carcharhinus also appeared), and their diversification mainly occurred in Neogene times. Among the carcharhinids, the genus Carcharhinus has the largest number of living species, namely, at least 35. The Arrival features a brand new storyline, improved visuals, great replay value, and most importantly, survival horror at its best.Nowadays, the requiem sharks comprise one of the most diverse and widespread families of selachians, i.e., Carcharhinidae. Slender: The Arrival is the official re-imagining and expansion of the original game created by Mark Hadley, teamed up with the writers behind the Marble Hornets series and the development team at Blue Isle Studios. Slender: The Eight Pages was a short, experimental first-person game that helped breathe new life into the horror genre through its use of unadulterated tension and fear. Slender: The Arrival is the official videogame adaption of Slender Man, developed in collaboration with Eric "Victor Surge" Knudson, creator of the paranormal phenomenon that has been terrifying the curious-minded around the world since its inception, with Mark Hadley and Blue Isle Studios.īack in 2012, Mark Hadley ( AgentParsec) created a game that captivated gamers around the world. ![]()
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