Xenacanthus was a 3-to-5-foot freshwater shark which fed on crustaceans and small fish. It lived from the end of the Devonian ...

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A scientific study revealed Edestus' defining characteristic was its frightening fangs - curved blades or "whorls" inside its enormous jaws. Wayne M Itano from the University of Colorado says the ...

The edestus is thought to have roamed the seas with its scary jagged teeth and humongous 22ft build over 350 million years ago. It lived in the Carboniferous Period which has been dubbed as the ...

This shark is also very ratshark-like! Having lived about 300 million to 320 million years ago, the Edestus is another prehistoric shark that looks quite… odd. Also called the scissor-toothed shark, ...

Purchases for the Department of Geology include a specimen of the teeth of an extinct shark, Edestus, from Devonian rocks of Rhenish Prussia. The median teeth of Edestus, instead of falling away ...

Dr. Alfred Harker, president, in the chair.-Dr. A. Smith Woodward: A new species of Edestus from the Upper Carboniferous of Yorkshire; with a geological appendix bv J. Pringle. The fossil confirms ...

Furthermore, other scientists believe it is closely related to the Edestus. This theory is backed up by fossil reconstruction. Further studies of the Helicoprion fossil through fossil reconstruction ...

An illustration of the ancient shark Edestus heinrichi preying on a fish. Many ancient sharks had different jaws than modern sharks. Jesse Pruitt and Evelyn Vollmer, Idaho Virtualization Lab ...