Waseda researchers have described the earliest example of a true dolphin in the known fossil record.
In an article published in the "Journal of Vertebrate Paleontology", Waseda Department of Earth Sciences researchers (lead author Mizuki Murakami) conclude that the specimen, which was originally categorized in 1977 as Stenella kabatensis, actually belongs to the Eodelphis kabatensis species.
This means that true dolphins existed 2 to 7 million years earlier than had been previously suggested by fossil records, and aligns with the results of molecular studies.
This work also includes the most comprehensive analysis yet of the relationships within the group of marine mammals that encompasses toothed whales such as orcas and sperm whales.
In another study, Murakami and a team of researchers also described the oldest known dolphin fossil with an asymmetrical skull, and created a new simulation of their evolution.
It has been accepted theory that dolphin ancestors earlier than 10 million years ago all had symmetrical skulls, and that asymmetry was the result of subsequent evolution. This study suggests a different evolutionary path for the marine mammals.
Waseda University | Research SEA News
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Today, textiles are used for more than just clothes or bags – they are high tech materials for high-tech applications. High-tech textiles must fulfill a number of functions and meet many requirements. That is why the Fraunhofer Institute for Silicate Research ISC dedicated some major developing work to this most intriguing research area. The result can now be seen at Techtextil trade show in Frankfurt from 4 to 7 May. On display will be novel textile-integrated sensors, a unique multifunctional coating system for textiles and fibers, and textile processing of glass, carbon, and ceramics fibers to fiber preforms.
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30.04.2015 | Press release