US EditionFossilized Ear Bones Rewrite the History of Freshwater Fish
Fossil evidence shows otophysan fishes evolved hearing adaptations during multiple marine-to-freshwater transitions, driving their vast diversity, researchers say.
3 Articles
3 Articles
Fossils reveal new origin of keen-eared freshwater fishes
Two-thirds of all freshwater fish today can hear sounds in a range close to humans. The supergroup of more than 11,500 species, called the ‘otophysans’, includes the well-known zebrafishes, carps and catfishes. Their superb hearing is possible thanks to a middle ear system called the ‘Weberian apparatus’. The tiny bones transmit sound vibrations from the fishes’ swim bladder to the inner ear, allowing them to hear much higher frequency sounds th…
Researchers discovered a small fish fossil in Alberta, Canada. This discovery provides new insights into the origin and evolution of Otophysi, the largest class within the superorder of fishes that also includes catfish and carp. Today, Otophysi make up two-thirds of all freshwater species. The specimen studied is […] Want to learn more about science? Read the latest articles on Scientias.nl.
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