Yep, you probably lost your ATF. Start the car up, and run it through the gears a time or two [staying in each gear for a few seconds]. Then put it in Park, leave the engine running, and check it. Betcha any money you lost fluid, because that what happened to me. How you lost it is another story. All you can do is fill it up and see if you can find where it is leaking out. The area you are working in isn't related to anything transmission, so like you said you didn't touch anything on the tranny.
And my, what green coolant you have! I wish my coolant ports looked like that! Somebody takes real good care of his car
You have a very leaky engine from the looks of it....yick!!
Hey now! Mine is 300 times worse than his. Except mine is all caked on.. his looks fresh[er].