These are fossil ants, known from Myanmar (Haidomyrmex) and France (Haidomyrmodes), and are probably the strangest ants ever. A discussion of them and links to all the literature about them, you can find here: http://antfarm.yuku.com/topic/15112/FG-132-Haidomyrmex

strange ants, youre right!
How old are the fossils?

http://digitallibrary.amnh.org/dspace/handle/2246/6368: The specimens, preserved in 98 million-year-old amber from northern Myanmar, are described here as Haidomyrmex scimitarus, n. sp., and Haidomyrmex zigrasi, n. sp., with diagnostic differences provided between them as well as with H. cerberus Dlussky (also in Burmese amber).

Müssten ca. so alt sein wie der Bernstein, in dem sie erhalten wurden, daher ebenfalls 98 Millionen Jahre.