THIS SPECIMEN IS A DESMOCERAS LATIDORSATUM, VAR. INFLATA. AMMONITE CUT AND POLISHED HALVES #122 WAS PREPARED BY THE ARTISANS IN MADAGASCAR. THE SIZE IS 2 1/4" X 2 3/4 X 1 1/4" AND WEIGHS 5.4 OUNCES. SOME SUTURES ON OUTSIDE, AND INSIDE THE FILED CHAMBERS ARE CLEARLY SEPARATED BY SEPTUMS. AN AFFORDIABLE SPECIMEN FOR YOUR COLLECTION.