Dinocochlea ingens is a trace fossil specimen held in the Natural History Museum of London. It is a symmetrical helicospiral several metres in length that was famously unexplained until shown in 2009 to be a concretion formed around the burrow of a worm.[1]
- ^ Taylor, P.D.; Sendino, C. (Autumn 2009). "Dinocochlea: the mysterious spiral of Hastings". Deposits (20): 40–41.