Giant Venus Fly Trap?

Resembling a huge Venus Fly Trap plant, the edge of this anvil cloud stretched nearly all the way across the sky around 7:25 AM, Thursday, July 28, 2011, from Progress Drive and Martha's Way in Hiawatha, Iowa. In fact, the capture was too wide for my 18mm lens to get everything in, so this is a created two-shot composite giving it a panoramic effect. The cumulonimbus cloud was located about 35 miles to the east, near the town of Onslow in Jones County and had cloud tops above 45,000 feet. About an hour and a half later at this Hiawatha location, strong thunderstorms produced lightning and heavy downpours.