A suspension of Clostridium Aceticum was prepared in 1947 and thirty-four years later cultured onto nutrient agar media; growth commenced in less than 12 hours.


"34 Year Old Clostridium Spores" (5)

Microbiologists examined debris from a Roman archeological site in the United Kingdom. The debris was over 2,000 years old but a significant number of viable Thermoactinomyes species were cultured. Thermoactinomyes spores were also recovered in a Minnesota lake over 7,000 years old.
In 1995, a group of scientists reported the recovery of bacterial spores from the gut of an extinct bee 25 - 40 million years old. The bee was allegedly trapped and preserved in amber. Samples of bee tissue incubated in sterile culture yielded endospore forming bacteria.
Scientist also claimed the isolation of halophilic bacterial endospores from salt crystals of the Permian age, over 250 million years old.


"250 Million Year Old Crystals Containing Viable Endospores" (6)

All of the above cases stressed the highest degree of no contamination from outside sources.