OE DEXISON UNIVP:rsITV. I I 



by rubbish from neighboring quarries and railroad cuts at the lime of 

 examination. The color of the stone is dral) and m places dark red. 

 A fragment of the glabella of Illcenus Day/nnensis, and a movable 

 cheek, probably of the same species were found here. The fauna 

 consists chiefly, however, of various corals, such as HelioUUs, Lyillia, 

 Halysites, Favosites, Heliophyllum, Diphylliim and Streptdasma. The 

 superposed layers of the Dayton limestone are drab in color, and con- 

 tain quite a large percentage of magnesia. 



Fair Hlrven.— The character of the fauna is much the same as 

 that of Ludlow Falls, with the exception of certain additions. Slriato 

 pom occurs in considerable abundance. Trilobites, brachiopods. and 

 gasteropods are rare. On the other hand various bryozoans of the 

 families Sh'icfoporiJce and Monticuloporidce are seen in moderate abun- 

 dance. 



Camp Corwin. — .V mile east of Dayton lies a long range of hills, 

 the most northern promontory of which is called Camp Corwin. On 

 the crest of several of the hills near by several feet of Clinton rock are 

 seen, of crinoidal structure, with few recognizable fossils. The color 

 varies from pink to deep red. Some of the courses contain a large 

 l^ercentage of iron. 



Todds Fork. — The exposures are three miles north of Wilmington, 

 chiefly on the north side of the creek. Five feet of sandy rock re- 

 ferred to the Medina Group are exposed. Above this rise eighteen feet 

 of Clinton rock, the lower courses being white limestone, quite heavi- 

 ly bedded, then more reddish rock of the sime nature, changing into 

 quite a heavy deposit of reddish rock above, containing much iron. 

 The last bed is the fossiliferous one and has yielded so fiir: liianus 

 ambiguus. I. Daytoncnsis, Proctus dcterminatus, Ddmanites Werthneri, 

 Orthoceras Jaincsi, O. inccpium, Raphistoma ajjinis, Orthis cUgantula, 

 Rhyjichoiiella scobina, Sirophomena rhomboidalis, Pluriwpora platyphylla^ 

 Ptilodictya expansa, Clathropora, Zaphrcntis, and Strcpklasma. 



A comparison of the faunx of the different hx alities so far men- 

 tioned will show that there is considerable variation in the distribution 

 of the different species. The most striking feature is the comparative 

 absence of trilobita, gasteropoda, and brachiopoda, and the large de- 

 velopment of the corals at Ludlow Falls and Fair Haven, the two 

 more western exposures. In a line almost parallel with these are the 

 Soldiers' Home, Fauver's, and Brown's quarries. In this line the cor- 



