ARK's base taming speed on PC, PS4, and Xbox is now doubled, meaning 1× is as fast as what 2× was previously. Dododex has been updated to reflect this. Use the "presets" dropdown for common multipliers.
For full Megatherium taming details, get the taming calculator app.
In Mobile version, megatherium can be resurrect on the obelisk after killing it in the dungeon (plase in mobile, where you can have battle with bosses). It doesn’t live in normal world. In mobile it eats an old kibble: baryonyx egg+raw fish+potato+mejoberry+fiber. It is very important information for mobile players!