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An analysis of a partially complete tail fin fossil shows that Cretoxyrhina had a lunate (crescent-shaped) tail most similar with modern lamnid sharks, whale sharks, and basking sharks. The transition to tail vertebrae is estimated to be between the 140th and 160th vertebrae out of the total 230, resulting in a total tail vertebral count of 70 ...
Cosmopolitodus is an extinct genus of mackerel shark that lived between thirty and one million years ago during the late Oligocene to the Early Pleistocene epochs.Its type species is Cosmopolitodus hastalis, the broad-tooth mako (other common names include the extinct giant mako and broad-tooth white shark).
Sharks could be facing extinction over the next couple of decades. Human interference is largely to blame for the species interference. Overfishing of sharks has increased as the global demand has ...
The 2007 film Sharkwater documents ways in which sharks are being hunted to extinction. [15] In 2009, the IUCN Shark Specialist Group reported on the conservation status of pelagic (open water) sharks and rays. They found that over half the pelagic sharks targeted by high-seas fisheries were threatened with extinction. [16] [17] [18]
Gray Whales & 19 Other Marine Species That Could Go Extinct by 2050. Jennifer Magid. June 28, 2024 at 10:15 AM ... Hammerhead Sharks have been considered critically endangered since 2006 by the ...
Tiger shark: Galeocerdo cuvier: Carcharhinidae Near threatened [9] Tiger shark: Oceanic whitetip shark: Carcharhinus longimanus: Carcharhinidae Critically endangered [10] Oceanic whitetip shark with some pilot fish: Blue shark: Prionace glauca: Carcharhinidae Near threatened [11] Blue shark: Pacific sharpnose shark: Rhizoprionodon longurio ...
The fossil "mega-toothed" sharks like megalodon have also traditionally been placed in Carcharodon, [5] but most current literature refutes this position, placing mega-toothed sharks in a separate family, Otodontidae, and genus, Otodus (Carcharocles). [3] [13] Carcharodon caifassii is the other species in genus Carcharodon. It is a debated ...
The species’ future “just got a little brighter,” a California aquarist said. ‘Pizza-sized’ creatures are close to extinction — but now there’s hope, aquarium says Skip to main content