The textiles in the Oseberg ship By Anne Stine Ingstad Amongst many other discoveries the Oseberg grave chamber also contained the largest and most varied collection of textiles and textile tools that has ever been found in a single grave. It is without equal in Nordic Prehistory. The collection consists of a number of fragmented tapestries and other patternwoven blankets of wool and linen, tablet woven braids and a large collection of cloth fragments, which come from clothing, sails or tents, rugs and so on, and in addition remains of silk fabrics and silk embroideries.
Diet and feeding[ edit ] Comparison of a spinosaurid skull with that of Barco case analysis and two extant pike conger eels Spinosaurid teeth resemble those of crocodiles, which are used for piercing and holding prey. Therefore, teeth with small or no serrations, such as in spinosaurids, were not good for cutting or ripping into flesh but instead helped to ensure a strong grip on a struggling prey animal.
Rayfield and colleagues, inconducted biomechanical studies on the skull of Baryonyx, which had a long, laterally compressed skull, comparing it to gharial long, narrow, tubular and alligator flat and wide skulls. They found that the structure of baryonychine jaws converged on that of gharials, in that the two taxa showed similar response patterns to stress from simulated feeding loads, and did so with and without the presence of a simulated secondary palate.
The gharial, exemplar of a long, narrow, and tubular snout, is a fish specialist. While the gharial is the most extreme example and a fish specialist, and Australian freshwater crocodiles Crocodylus johnstoniwhich have similarly shaped skulls to gharials, also specialize more on fish than sympatric, broad snouted crocodiles.
And are opportunistic feeders which eat all manner of small aquatic prey, including insects and crustaceans. Thus, their aptly shaped snouts correlate with piscivory, this is consistent with hypotheses of this diet for spinosaurids, in particular baryonychines, but it does not indicate that they were solely piscivorous.
Cuff and Rayfield in on the skulls of Spinosaurus and Baryonyx did not recover similarities in the skulls of Baryonyx and the gharial that the previous study did. Baryonyx had, in models where the size difference of the skulls was corrected for, greater resistance to torsion and dorsoventral bending than both Spinosaurus and the gharial, while both spinosaurids were inferior to the gharial, alligator, and slender-snouted crocodile in resisting torsion and medio-lateral bending.
When the results from the modeling were not scaled according to size, then both spinosaurids performed better than all the crocodilians in resistance to bending and torsion, due to their larger size. Thus, Cuff and Rayfield suggest that the skulls are not efficiently built to deal well with relatively large, struggling prey, but that spinosaurids may overcome prey simply by their size advantage, and not skull build.
Due to the narrow snout, vigorous side-to-side motion of the skull during prey capture is unlikely. Baryonyx was found with scales of the prehistoric fish Scheenstia in its body cavity, and these were abraded, hypothetically by gastric juices.
Bones of a young Iguanodonalso abraded, were found alongside this specimen. This may represent a predation event, but Buffetaut and colleagues consider it more likely that the spinosaurid scavenged the pterosaur carcass after its death.
This indicates ecological partitioning between these theropods, and that spinosaurids were semi-aquatic predators. Charig and Milner speculated in that Baryonyx may have crouched by the riverbank and used its claws to gaff fish out of the water, similarly to grizzly bears.
Kitchener instead postulated that Baryonyx more likely used its arms to scavenge the corpses of large dinosaurs, such as Iguanodon, by breaking into the carcass with the large claws, and subsequently probing for viscera with its long snout.
The specimen, found in and described by Simone Maganuco and Cristiano Dal Sasso and colleagues inis believed to have come from a very small juvenile measuring 1.
Isotope ratios from teeth from Baryonyx, Irritator, Siamosaurus, and Spinosaurus were compared with isotopic compositions from contemporaneous theropods, turtles, and crocodilians. The study found that, among theropods, spinosaurid isotope ratios were closer to those of turtles and crocodilians.
Siamosaurus specimens tended to have the largest difference from the ratios of other theropods, and Spinosaurus tended to have the least difference. The authors concluded that spinosaurids, like modern crocodilians and hippopotamuses, spent much of their daily lives in water.
The authors also suggested that semiaquatic habits and piscivory in spinosaurids can explain how spinosaurids coexisted with other large theropods:NOTE - The FARSite is the authoritative source for the AFFARS only. The FARSite is only an electronic representation of the FAR and the other supplements.
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Got a file you do not know what it is? Send it to us and we will identify it.. Help everyone out. If you have a file with an extension not listed here. Tell us about it and we will add it to this list.. Other resources for file extensions are srmvision.com and srmvision.com list every posible file extension. An autopsy case of progressive generalized muscle atrophy over 14 years due to post-polio syndrome - Oki 1, Uchino A, Izumi Y, Ogawa H, Murayama S, Kaji R [ABSTRACT] - 12/01/ Case Analysis of Barco Projection System: Worldwide Niche Marketing Introduction Barco N.V. was established in as a producer of radio broadcast receivers.
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Update: Just two days following the publication of this blog, Barco announced exactly what I suggested — they’ve integrated Overture into ClickShare!
It will be shown at InfoComm. Click here to read more about the announcement. But, Overture didn’t appear out thin air.
In fact, Barco. The Economist offers authoritative insight and opinion on international news, politics, business, finance, science, technology and the connections between them.