I bow to your superior Google Fu. It may have been invertebrates rather than amphibians,as I said, I was going from memory. (I can already improve the post!)

I had really hoped to promote discussion on the concept for human preservation. I had looked through the cryonics links and hadn't noticed any discussion around this concept. In fact, I have never seen it suggested as an alternative, but thought this community would be a great place to kick it around. Thanks for your response.