OIL AND GAS: Exxon Mobil stumbles on massive dinosaur fossils while exploring shale play Published: Thursday, March 13, 2014 An Exxon Mobil Corp. gas project in western Argentina is on pause after workers found more fossils than fuel. Please subscribe to Greenwire to read the full story. Username: Password: Forgot your access codes? Recover them. Not a subscriber? Sign up for a trial. Ready to subscribe? Click here.