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Do we have any sources that say which genus or genera survived into the Oligocene?-- Mr Fink 23:25, 6 October 2007 (UTC) reply

McKenna and Bell record Harpagolestes from the early Oligocene, with a "?". That could mean a) the genus may be wrong, b) it may not be a mesonychid, or c) the age of the fossil may be questionable. -- Helioseus 16:02, 7 October 2007 (UTC) reply

We should mention this, then.-- Mr Fink 18:00, 7 October 2007 (UTC) reply

Added. Found a recent paper that discusses the species in question and reassigns it to Mongolestes, so Mongolestes it is. -- Helioseus 19:17, 7 October 2007 (UTC) reply