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dsojda
 Expert Boarder
Posts: 82 
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A question for all you Mesozoic mavens out there. Marine reptiles developed sclerotic rings around their eyes as a way of adjusting to high pressure during deep dives, correct? Well, do whales have such strcutures and, if not, how do they adjust to pressure without ruining their eyes?
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Caledonian
 Expert Boarder
Posts: 85
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Many archosaurs had sclerotic rings: dinosaurs and (I think) pterosaurs, as well as icthyosaurs. Sauropods, tyrannosaurs, and hadrosaurs have sclerotic rings, and aren't exactly known for deep dives.
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adsdating
Senior Boarder
Posts: 63
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well, i know that they have modified eyes -shape different from that of other mammals. I have no picture or description right now, but AFAICR, some parts are thicker - and intraoccular presure may be regulated as
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