Ben Creisler
Some recent items:
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Arctic Edmontosaurus lives again: A new look at the 'caribou of the Cretaceous'
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Muttaburrasaurus (video)
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Chatting with NDGS Paleo: Thescelosaurus with Clint Boyd (video)
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Titan from Volga River (Volgatitan simbirskiensis (in Czech)
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A trick of the tail
The cover shows an artistâs impression of the giant theropod Spinosaurus aegyptiacus. Like other non-avian dinosaurs, spinosaurs are usually thought of as largely land-dwelling, but it has been suggested that some of them may have been semi-aquatic-- an idea that has proved controversial. In this weekâs issue, Nizar Ibrahim and his colleagues present a Spinosaurus fossil with a uniquely shaped tail that seems to be adapted for propulsion in water. The remains were found in the 97-million-year-old Kem Kem beds of southeastern Morocco and represent the most complete skeleton of a Cretaceous theropod found in mainland Africa to date. The flexible tail has very tall neural spines and would have been capable of extensive left-to-right movement. Modelling studies by the researchers suggest that the tail would have created significant thrust, indicating that Spinosaurus could have moved through water in a similar manner to modern crocodiles.Â
Cover image: Davide Bonadonna & Fabio Manucci (modelling and final composition),
DI.MA. Dino Makers (colour design).
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Ctenochasmatid pterosaur from Chile (in Spanish)
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Adalatherium and gondwanatheres (in Italian)
Un nuovo fossile dal Madagscar getta luce su un gruppo ancora oscuro di mammiferi mesozoici: i gondwanateri
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La Capa Negra at Agost in Alicante Province, Spain, is now an official Natural Monument to mark the K/Pg boundary, notable for a black clay layer of sediment 10 centimeters thick (in Spanish)
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Ancient reptile had mammal-like tooth enamel, study shows
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How to Make Monsters: Craniofacial Ontogeny in Mosasauridae
THE BROMACKER FOSSIL PROJECT PART I: INTRODUCTION AND HISTORY
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200-Million-Year-Old 'Squid-Like' Creature Attack Captured in Ancient Fossil
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The Lives Behind the Numbers: Former Redpath Museum director Robert Carroll remembered (video)
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Mary Anning comic (in Spanish/English)