Phacops rana
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- Geological Survey
- Collected Papers in Avian Paleontology Honoring the 90Th Birthday of Alexander Wetmore
- Ohio Trilobites
- The Phanerozoic Eons Are Divided by Mass Extinctions
- Fabulous Fossils— 300 Years of Worldwide Research on Trilobites
- Structure and Function of Trilobite Terrace Lines
- The Eyes of Trilobites: the Oldest Preserved Visual System
- Geological Survey
- QUARTERLY NEWSLETTER of the CALVERT MARINE MUSEUM FOSSIL CLUB Volume 7, Number 3 Summer 1891 Whole Number 25 Editor: Donna Richa