THE EARLIEST TRILOBITE RESEARCH (ANTIQUITY TO THE 1820S) JAMES ST. JOHN 1179 University Drive, Ohio State University at Newark, Newark, Ohio 43055,

Source URL: www.newark.osu.edu

• Taxonomy
• Paradoxides davidis
• Pygidium
• Cephalon
• Ptychopariida
• Trilobites
• Phyla
• Protostome