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 E-Mail IMAGE: Teeth of the new hybodontiform shark Durnonovariaodus maiseyi from the Upper Jurassic Kimmeridge Clay Formation of England view more  Credit: (© Sebastian Stumpf) This rare fossil find comes from the Kimmeridge Clay Formation in England, a series of sedimentary rocks that was formed in a shallow, tropical-subtropical sea during the Upper Jurassic, about 150 million years ago. The fossil shark skeleton was found more than 20 years ago on the southern coast of England and is now held in the Etches Collection. Additional fossil shark specimens from it will be investigated in the years to come. Due to their life-long tooth replacement shark teeth are among the most common vertebrate finds encountered in the fossil record. The low preservation potential of their poorly mineralized cartilaginous skeletons, on the other hand, prevents fossilization of completely preserved specimens in most cases.

Sebastian stumpfUniversity of viennaKimmeridge clay formationUpper jurassicLate jurassicEtches collectionUpper jurassic kimmeridge clay formationசெபாஸ்டியன் ஸ்டூம்பிப்பல்கலைக்கழகம் ஆஃப் வியன்னாமேல் ஜுராசிக்தாமதமாக ஜுராசிக்