A Geological Reconnoissance. i8i 



sastrea g/'g'cis Owen, occurs in a few restricted areas about 

 Independence, in or near the horizon of Accrvtilaria profunda. 

 AcerviUaria davidsoni Ed. and H. is found occasionally in the 

 drift or other superficial deposits, evidently weathered out 

 from strata that originally held a position higher than any 

 seen in place in the vicinity of Independence. 



At Littleton, ten miles northwest of Independence, there are 

 exposures on both sides of the river containing groups of fos- 

 sils of exceptional interest. The only rocks seen in place 

 between Independence and Littleton are exposed at Otterville, 

 and belong to the horizon of the Spirifera pennata beds. At 

 an old ford a short distance below the villagfe of Littleton the 

 beds containing Accrzndaria profunda Hall, are seen above 

 the level of the water. They may be traced almost to the 

 mill on the east side of the river. A few belated individuals 

 of Sfirfera -pennata Owen, are .occasionally found in them, 

 but when found at this horizon the form differs markedly from 

 the average forms in the typical pennata beds. The individ- 

 uals are unusually large, very robust, and they have the 

 hinge-area disproportionately wide. The same gibbous form 

 with wide hinge-area was collected at the same horizon in the 

 quarry east of Jesup. 



At the "dry run," a mile east of Littleton, the fauna of the 

 A. profunda beds has been freed from its enclosing matrix by 

 the erosion of torrents that at certain times sweep down the 

 usually dry channel. In addition to A. -profunda^ which is 

 there very common, the fauna contains Cystiphyllmn amcri- 

 cantim Ed. and H., Cyalhophyllnm, Attlocophylluvi, Favosites 

 dumosus Win., three other species of Favosites, Alveolites 

 goldfussi Bill., a species of Alveolites with corallites larger 

 than in A. goldfussi, and another very unique species with 

 corallites less oblique than usual and a strongly developed 

 central tooth on the inner side of each tube. There are also 

 Dolatocrinns, undetermined species, Cladopora -pahnata H. 

 and W., C. prolifea H. & W., two or three species of Stro- 

 matoporoids, one or two of Aulopora and a peculiar Syringo- 



