I think Ammonites must have been a fearsome looking creature as they made there way around the ancient seas.
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The Nautilus is the only remaining cephlapod with an external shell and this video gives some idea of what the fossil Ammonites would have been like only bigger.
I am semi-retired after a career in medical sciences. I now work from home doing independent research and consultancy amongst other things. One advantage of this is that I do have time to indulge my interests including birdwatching, natural history, steam trains and history particularly ancient history.
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