You have found a prehistoric note in a bottle! It contains the following information and has been left from Echo006 when he went to the past - in the future (in our time!) "WARNING! During the Prehistoric Party, penguins will be able to transform into dinoasuars and fly, stomp and roar. Non-members should be very careful, as I'm pretty sure dinosaurs would eat penguins."
Everybody is required to report to Gary on the 17th to recieve their orders. Be on the look out cavemen and cavewomen because dinosaurs can be very scary :)
Don't worry, you will all be able to use the very red angry emote and the meat emote!