By Richard Arnold Davis, David L. Meyer

The quarter round Cincinnati, Ohio, is understood during the global for the considerable and gorgeous fossils present in limestones and shales that have been deposited as sediments at the sea flooring through the Ordovician interval, approximately 450 million years ago--some 250 million years earlier than the dinosaurs lived. In Ordovician time, the shallow sea that coated a lot of what's now the North American continent teemed with marine lifestyles. The Cincinnati quarter has yielded many of the world's so much plentiful and best-preserved fossils of invertebrate animals similar to trilobites, bryozoans, brachiopods, molluscs, echinoderms, and graptolites. So recognized are the Ordovician fossils and rocks of the Cincinnati quarter that geologists use the time period "Cincinnatian" for strata of an analogous age far and wide North the United States. This booklet synthesizes greater than one hundred fifty years of study in this fossil treasure-trove, describing and illustrating the fossils, the existence conduct of the animals represented, their groups, and dwelling relations, in addition to the character of the rock strata within which they're came across and the environmental stipulations of the traditional sea.

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Respectfully yours, E. O. P. James, Joseph F. James, C h a r l e s B. Dyer, S . A . Miller, and o t h e r m e m b e r s o f t h e C i n c i n n a t i S c h o o l . For e x a m p l e , U l r i c h w a s o n e o f six m e m b e r s o f the C i n c i n n a t i S c h o o l w h o served o n a c o m m i t t e e o n the n o m e n c l a t u r e o f the rocks o f t h e t y p e - C i n c i n n a t i a n (S. A . Miller e t a l . 1 8 7 9 ) . N o r did his c o n t a c t s c o m e o n l y w i t h C i n c i n n a t i folk.

T . D . D y c h e , the m e m b e r of the C i n c i n n a t i S c h o o l , is the same person as David Tullis D u r b i n D y c h e , t h e dentist. ( B e c k e r 1938; D y c h e 1892a, b, c; U. P. ) E. O. Ulrich E d w a r d O . U l r i c h ( F i g u r e s 2 . 5D) w a s b o r n F e b r u a r y 1,1857, i n C i n c i n n a t i , b u t shortly t h e r e a f t e r t h e family m o v e d t o C o v i n g t o n , K e n t u c k y , just across t h e O h i o River. T h e "O" stands for " O s c a r , but it was not a n a m e g i v e n t o h i m b y his p a r e n t s ; E d w a r d U l r i c h g a v e h i m s e l f that n a m e after a h e r o in o n e of t h e stories he read as a boy.

A s a n a c t i v e m e m b e r o f the society, he s e r v e d at v a r i o u s t i m e s as v i c e p r e s i d e n t , p r e s i d e n t , c u r a t o r of p a l e o n t o l o g y , a n d an e d i t o r of their j o u r n a l , in a d d i t i o n to p r e s e n t i n g pap e r s a t t h e i r m e e t i n g s . S . A . M i l l e r w a s o n e o f a c o m m i t t e e o f ten e s t a b l i s h e d b y the society t o c o n s i d e r t h e g e o l o g i c a l n o m e n c l a t u r e o f the t y p e C i n c i n n a t i a n , a n d he w a s t h e first a u t h o r of their report (S.

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