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Weird News Rare fossil of bone-crushing crocodile cousin found in Brazil

05:55  06 february  2020
05:55  06 february  2020 Source:   nationalgeographic.com

Very good dogs discover 65 million-year-old fossil skeleton while out for a walk

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Fossils 101 Fossils are echoes of an ancient past. Find out about the two major categories of fossils , how fossilization occurs, and how “The fact that you have organisms that are very close in terms of kinship in Brazil and Argentina during the same time period indicates a similarity in environment and

“Living crocodiles and alligators are not 'living fossils .' They are simply just survivors and only represent a small fraction of the lifestyles that their A set of dinosaur tracks crosses the Valley of the Dinosaurs in Sousa, northeastern Brazil . While fossilized dinosaur bones tell us about the anatomy

This newly discovered species of prehistoric reptile, called Dynamosuchus collisensi, lived 230 million years ago during the Triassic period. Its back was protected by two rows of dermal bones. © Illustration by Márcio L. Castro

This newly discovered species of prehistoric reptile, called Dynamosuchus collisensi, lived 230 million years ago during the Triassic period. Its back was protected by two rows of dermal bones.

Rodrigo Müller was working a block of rock and dirt at the base of Agudo Hill, an hour from Porto Alegre, when he first saw an unusual set of osteoderms, bony deposits that form plates on the skin of a reptile or amphibian.

“It was a surprise, because we had never seen anything like this in Brazil before,” Müller, a paleontologist at the Federal University of Santa Maria, says of what was otherwise an ordinary visit to the Janner dig site, once home to some of the earliest dinosaurs to roam Earth.

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Fossilized feces filled with bone reveal the feeding habits of an ancient predator. The coprolites found at the Smok fossil site in Poland contained bits of teeth from the ancient crocodile relative. Preserved throw up pellets, or regurgitalites, are rare in the fossil record. In some cases, they

Crocodiles (subfamily Crocodylinae) or true crocodiles are large semiaquatic reptiles that live throughout the tropics in Africa, Asia, the Americas and Australia.

As he continued his delicate work, he brushed dirt from an intact cranium and several other fossilized bones. Together, the collection formed a well-preserved and almost complete skeleton of a rare Ornithosuchidae reptile, a family considered cousins to today’s crocodiles and alligators that had been previously recorded only in Argentina and Scotland.

a close up of a cake: This Dynamosuchus collisensi skeleton was discovered near Porto Alegre, Brazil. © Photograph by Rodrigo Temp Müller

This Dynamosuchus collisensi skeleton was discovered near Porto Alegre, Brazil.

Dated to 230 million years ago, Dynamosuchus collisensis—newly named for its powerful bite and the location of the find—was described January 31 in the journal Acta Palaeontologica Polonica by a team that includes Müller’s colleagues at Argentina’s Museo de La Plata and Virginia Tech in the United States. Only three other species of Ornithosuchid have been discovered in the world, the last of which was found in Argentina and described 50 years ago.

Race against tide: Rare fossil of 197 million-year-old sea creature found by dog walker on beach extracted by experts in just FOUR-hour window

  Race against tide: Rare fossil of 197 million-year-old sea creature found by dog walker on beach extracted by experts in just FOUR-hour window Amateur fossil collector Jon Gospill made the discovery of a lifetime when he came across the so-called 'ichthyosaur' in Bridgewater Bay before Christmas last year. He was led to the beautifully preserved fossil on Stolford Beach by his dogs, Sam and Poppy, after the latter of whom the fossil has now been nicknamed.Mr Gospill contacted specialists at South West Heritage Trust, The Environment Agency who own the Bridgewater Bay reserve and Natural England.A team of specialists then had just four hours once they started excavation to beat the tide and retrieve the 360 pound fossil specimen from the shore.

Fossils of a new species of ancient crocodile cousin have been found in limestone once destined for Italian kitchen countertops, a new study says. Fossil Crocodile From Brazil May Be "Missing Link" National Geographic - February 2, 2008 The fossil of a land-bound reptile that could be a link

Scientists have the scoop on bone - crushing behavior in extinct dogs, and the proof is in the animals' fossilized poop. Domestic dogs are known to enjoy chewing large bones, but they lack the jaw strength to pulverize them. In fact, in today's ecosystems, the only large predators with skulls and jaws

While its bite could crush bones and its blade-like teeth tore through meat, Müller and company believe Dynamosuchus collisensis was a slow scavenger, or necrophagous, similar to the vultures and hyenas of today. It fed mostly off animal carcasses and easy-to-catch prey, meaning it filled a crucial part of the food chain that paleontologists hadn’t known existed in this region of Brazil until now.

“It helps us understand better how that ecosystem worked,” Müller says.

Without scavengers like the Dynamosuchus collisensis, carcasses and other organic waste would pile up rather than breaking down. This decay allows plants to absorb essential nutrients. Those plants then feed herbivores and omnivores, allowing the cycle to continue.

Bone bonanza

This Triassic reptile was quite large compared to other animals that lived during the period, measuring roughly seven feet in length. Unlike its modern relatives, Dynamosuchus collisensis was terrestrial. Its four limbs swung underneath its body and not at its sides, while its osteoderms ran in two protective rows down its back.

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‘Golden cannonball’ rock is opened to find a rare 185-million-year-old fossil of an ancient sea creature hidden inside. Pyritic concretions, known as 'cannon balls' can be found in shales and are common along the Yorkshire coastline. Cleviceras are an extinct genus of cephalopod belonging to the family

Finding challenges idea early humans were using tools, as previously claimed. Scientists looked at fossilised mammal bones from Ethiopia's Middle Awash site. The marks were found on a long bone from a prehistoric type of antelope and the rib of an animal thought to be similar to a buffalo.

It stalked around forested areas surrounded by rivers, alongside some of the oldest known dinosaurs in the world, mammal ancestors called cynodonts and other reptiles like rhynchosaurs.

The newly revealed fossils connect the evolution and interactions between the land masses where Ornithosuchidae lived, which at the time, were all part of the supercontinent Pangaea. The animal discovered in Brazil is more closely related to one of the specimens found in Argentina than the two specimens in Argentina are to each other. This finding indicates the fauna exchanged members over long distances and didn’t evolve in an isolated fashion, Müller says.

“The fact that you have organisms that are very close in terms of kinship in Brazil and Argentina during the same time period indicates a similarity in environment and ecologies, although each region had differences that promoted speciation,” says Marco Aurélio Gallo de França, a paleontologist from the Federal University of the Valley of San Francisco who did not take part in the discovery.

Thanks to the intactness of the Dynamosuchus collisensis fossil, Müller and the other researchers can run further tests on the strength of the reptile’s bite, using CT scans to create 3D digital models.

“It’s really well preserved. There’s practically no deformation in any of the bones, and there’s a good part of the cranium and the postcranial skeleton, so it’s very complete for this type of animal,” Müller says of the fossil. “There’s so much information in those bones.”

Researchers Have Uncovered A New Species Of Dinosaur Named 'Reaper Of Death' .
The 'Reaper of Death' is a sub species of tyrannosaur that has recently been discovered in Alberta, Canada. The tyrannosaur is the first new species of the sort to be discovered in 50 years.Dr François Therrien, Curator of Dinosaur Palaeoecology at the Royal Tyrrell Museum states:

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