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Archaic tooth gives some teeth to the theory of crossing among different types of humans

A three-rooted lower first molar and the pine to which it belonged, from a modern human. (Christine Lee, California State University) An ancient, unusual tooth discovered in China underpins the theory that Homo sapiens and an extinct human species, Denisovans, exchanged genetic material and physical traits thousands of years ago. The tooth, a molar with three roots, belonged to a …

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Petrified teeth suggest that some ancient crocodiles were vegetarians

Two old herbivorous crocodiles, Chimaerasuchus (left) and Pakasuchus (right). Image: Jorge Gonzalez / Gizmodo [1965965] Crocodiles are among the scariest carnivores on earth today, but recent research suggests that their ancient relatives have developed a taste for plants. A common misconception about crocodiles is that they have remained largely unchanged throughout their 200-million-year history. New research published in Current Biology …

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Surprise find about crocodile teeth

(News) – A vegetarian crocodile? It seems strange, but a new study suggests that some old crocodiles fed on plants at least three times over aeons instead of meat, New Scientist reports. The disclosure comes from a study by the University of Utah, as described in Current Biology. Exploring the fossilized teeth of 16 extinct species of crocodile forms, the …

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Old crocodile teeth reveal some probably eaten plants: NPR

An artist has reconstructed what ancient crocodile ancestors looked like, including some that most likely ate plants. Jorge Gonzalez Hide Caption Switch caption Jorge Gonzalez An artist has reconstructed what ancient crocodile ancestors looked like, including some that most likely ate plants. Jorge Gonzalez Modern crocodiles can trace their ancestry back when dinosaurs roamed the earth. If you imagine this …

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New Patch finally fixes Assassin's Creed III Remastered's scary teeth

The spooky pre-patch teeth. Screenshot: Alterminal (Imgur) On Thursday, Ubisoft released Patch 1.03 for Assassin's Creed III Remastered On Xbox One, PlayStation 4 and PC, the lighting was primarily adapted to cutscenes to improve the look of faces, skin and hair of the characters in the game. As with many patch notes, it is a dry description of a most …

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Terrible evidence in the death of Kelsey Berreth: 5 teeth

(Newser) – They make for grim reading. Colorado police have issued over 20 arrest warrants for murdering Patrick Frazee in the death of fiancée Kelsey Berreth (29). They reveal how authorities staged the 32-year-old Frazee as a suspect, partly because of "several inconsistencies between the information Patrick initially provided to the officers and the information received during the investigation," said …

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Mollusk with magnetic teeth could be the key to nano-scale energy sources

A team of scientists has made a new discovery about naturally occurring magnetic materials, which in turn could lead to the development of nano-scale energy sources used to power next-generation electronic devices. Researchers from Okayama University, Japan, and UC Riverside's Bourns College of Engineering jointly studied the Wellington Chiton, a kind of mollusk that makes teeth from magnetic mineral magnetite, …

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Magnetic teeth promise material and energy – ScienceDaily

A toothed mollusk that can grind stones can be the key to producing next-generation, non-abrasive and nanoscale materials for power generation. The mollusk, called Wellington Chiton, rubs off algae with a special set of marine rocks from teeth made of magnetic magnetite. The teeth have the maximum hardness and stiffness of a known biomineral. Although magnetite is a geological mineral …

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Magnetic teeth promise material and energy

Gumboot Chiton ( Cryptochiton stelleri ). Picture credits: Kisailus Biomimetics & Nanostructured Materials Lab A mollusk with teeth that can grind rocks may be the key to producing next-generation, nano-scale, abrasion-resistant materials and materials. The mollusk, called Wellington Chiton, scrapes seaweed algae with a special bit of magnetic mineralite. The teeth have the maximum hardness and stiffness of a known …

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