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UrduUntil recently, Orthacanthus gracilis could have been considered the “John Smith” of prehistoric shark names, given how common it was. Three different species of sharks from the late Paleozoic Era – about 310 million years ago – were mistakenly given that same name, causing lots of grief to paleontologists who studied and wrote about the sharks through the years and had trouble keeping them apart.
Tag: Shark
Tens of thousands of endangered sharks and rays caught off Congo
Tens of thousands of endangered sharks and rays are caught by small-scale fisheries off the Republic of the Congo each year, new research shows.
Surf’s up (and don’t mind the sharks)
In a new study from the University of South Australia, researchers found that 60 per cent of surfers are not afraid of sharks when surfing, despite more than half of them spotting a shark when out in the water.
“Get out of the water!” Monster shark movies massacre shark conservation
Undeniably the shark movie to end all shark movies, the 1975 blockbuster, Jaws, not only smashed box office expectations, but forever changed the way we felt about going into the water – and how we think about sharks.
Southern Africa’s Most Endangered Shark Just Extended its Range by 2,000 Kilometers
A team of marine scientists has confirmed that southern Africa’s most threatened endemic shark – the Critically Endangered shorttail nurse shark (Pseudoginglymostoma brevicaudatum) – has been found to occur in Mozambique; a finding that represents a range extension of more than 2,000 kilometers (1,242 miles).
Megalodon shark gave live birth to large newborns that likely grew by eating unhatched eggs in womb
A new study shows that the gigantic Megalodon or megatooth shark, which lived nearly worldwide roughly 15-3.6 million years ago and reached at least 50 feet (15 meters) in length, gave birth to babies larger than most adult humans.
Body size of the extinct Megalodon indeed off the charts in the shark world
A new study shows that the body size of the iconic gigantic Megalodon or megatooth shark, about 50 feet (15 meters) in length, is indeed anomalously large compared to body sizes of its relatives.
Between shark and ray: The evolutionary advantage of the sea angels
Angel sharks are sharks, but with their peculiarly flat body they rather resemble rays. An international research team led by Faviel A. López-Romero and Jürgen Kriwet of the Institute of Palaeontology has now investigated the origin of this body shape. The results illustrate how these sharks evolved into highly specialised, exclusively bottom-dwelling ambush predators and thus also contribute to a better understanding of their threat from environmental changes.