Challenge #21 Question 1. What name is given to the geographical line separating Australian from Oriental fauna? a) Plimsoll Line, b) Mason Dixon Line, c) Wallace's Line Answer: c) Wallace's Line - named after Alfred Russel Wallace the English naturalist who spent eight years studying the fauna of the Malay Archipelago in the mid nineteenth century. He observed the distinct separation of species on each side of the strait between Bali and Lompoc. Correct answer received from: Steve, Sue, David, notme, Jeff, Cindie, Jimbo, Sheila, lutz, David, Meg, John H., Ron Youngs, Derv, Shane, john4ale, Clair S., E.B., melfan, Karla, mika, Sue, v., Loser, tim, Val H., Eric, Brian, howard, BZ, Stomatopod, Yevgenya S.,