""Notes On Ordovician Trilobites: Illaenidae From The Black River Limestone Near Ottawa, Canada"" is a scientific publication written by Percy Edward Raymond in 1908. The book is focused on the study of trilobites, a group of extinct marine arthropods that lived during the Ordovician period. Specifically, the book focuses on the Illaenidae family of trilobites found in the Black River Limestone near Ottawa, Canada. The book provides detailed descriptions...
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