I missed this when it first appeared.
The organisms found (identified only by genetic sequence) in Lake Vostok under 4 km of ice and separated from the rest of the ecosphere for 15 million years include:
http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0067221
3,500 species in all, mostly bacteria with some eukaryotes (222 species) and remarkably few archaea (2 species).
The eukaryotes would be the most interesting, mostly fungi, but substantial numbers of animals (no plants).
The animals include 14 arthropods, and include
Daphnia (water flea)
Bivalve mollusc
Tardigrade
Springtails
Rotifer
Sea anenome
This is a great story of survival of relatively familiar forms of life under extreme conditions.