Lukas VFN 🇪🇺3D models show #dolphins already used narrow-band sound waves for orientation 5 million years ago https://phys.org/news/2024-07-3d-dolphins-narrow-band-million.html
Predicting ecology and hearing sensitivities in Parapontoporia—An extinct long-snouted dolphin https://anatomypubs.onlinelibrary.wiley.com/doi/10.1002/ar.25538
They colonized rivers, which links them to today's rare and endangered #RiverDolphins. Investigating the sensory systems of toothed #whales can help to understand the influence of habitat on their hearing and the evolutionary dynamics of marine mammals.
3D models show dolphins already used narrow-band sound waves for orientation 5 million years ago
Senckenberg researcher Dr. Rachel Racicot and her former student Joyce Sanks from Vanderbilt University have examined the inner ear of the extinct dolphin genus Parapontoporia. In their study, published in the journal The Anatomical Record, they show that the toothed whales had already developed specialized high-frequency hearing in the Miocene.