Obruchevella is a helican microfossil known from the Burgess Shale and Cambrian sites in China, as well as later sites dating to as late as the Devonian. It is also known from the Vindyhan of India (age uncertain). ... Found on http://en.wikipedia.org/wiki/Obruchevella
1) Burgess Shale fossil 
Obruchevella is a helican microfossil known from the Burgess Shale and Cambrian sites in China, as well as later sites dating to as late as the Devonian. It is also known from the Vindyhan of India (age uncertain). ...