Pennales Directory References Discover 8 of the World’s Most-Remote Islands New Seven Wonders of the World 6 Lost Civilizations Presidential Debate Bingo The Rise of the Machines: Pros and Cons of the Industrial Revolution 7 of History's Most Notorious Serial Killers 9 Things You Might Not Know About Adolf Hitler Contents Pennales diatom order Also known as: pennate Learn about this topic in these articles:diatoms In diatom… have radial markings; the elongated Pennales, which move with a gliding motion, have pinnate (featherlike) markings.Read More