P3R1O1B3O1S1C3I1D2E1A1N1S1
20 points
PROBOSCIDEANS is validvalid
PROBOSCIDEAN, [n]
PROBOSCIDEAN, any of an order of large mammals comprising the elephants and extinct related forms, also PROBOSCIDIAN [n]
PROBOSCIDEAN, [n]
PROBOSCIDEAN, any of an order of large mammals comprising the elephants and extinct related forms, also PROBOSCIDIAN [n]