A 430-million-year-old fossil discovered "frozen in time" in ancient volcanic rock has been named after Sir David Attenborough.The tiny crustacean, measuring less than 1cm long, was found by researchers in Herefordshire.It has been named Cascolus Ravitis, the first word a Latin rendering of the Old English equivalent to Attenborough.Ravitis is is a reference to Roman name for Leicester, where Sir David lived on the city's university campus....