A large, not so in charge, woman with a face and body that resembles that of prehistoric mammals. Key features of a "jerassica" are as follows:
foopah
saggy tits
wizard sleeve twat
Smelly vagina
Horribly bad breath
Beard
Bush from its crack to its belly button
Cautions:
When approaching a jerassica please use extreme caution. Hazardous fumes will engulf you. You may also be eaten.
Wow... Jerassica... Your pretty!