Book Description
North American Index Fossils. Volume 2. Conularida, pteropoda, cerhalopoda, annelida, trilobita, phyllopoda, ostracoda, cirripedia, malacostraca, merostomata, arachnida, myriopoda, insecta, cystoidea, blastoidea, crinoidea, ophiuroidea, asteroidea, echinodea and appendices.