121 



S 56 d. Gray, crystalline limestone, in imperfect layers fourteen 

 to twenty-four inches thick. Trilobite remains most abundant in the 

 middle and upper parts 14 feet. 



A try pa reticularis r, 

 Centronella glansfagea c, 

 Leptaena fhomboidalis c, 

 Pentamerella arataf r, 

 Rhipidometla sp. r, 

 Spirifer duodenarius r, 

 Spirifer macrothyris c, 



Spirifer macr>us r, 

 Spirifer cf. segmentus r, 

 Spirifer varicosus r, 

 Dalmanites calypso c, 

 Odontacephalus aegeria a, 

 Phacops sp. r. 



S 56 e. Gray, granular to sub-crystalline limeston<e, in layers six 

 to eleven inches thick. Fossils imperfectly preserved 6 feet. 



Anoplia nucleataT r, 

 Camarotoechia Carolina c, 

 Centronella glansfagea c, 

 Leptaena rhomboidalis r, 

 Meristella cf. nasuta c, 



S 56 f. Gray, sub-crystalline limestone, with a two-inch band of 

 much broken fossils at the base 5 feet, 2 inches. 



Spinifer duodenarius r, 



Spirifer macrothyris c, 



Platyceras dumosum r, 

 Platyceras sp. r. 



AHrypa reticularis c, 

 Camarotoechia Carolina c, 

 Centronella glansfagea c, 

 Leptaena rhomboidalis r, 

 Rhipidomella vanuxemi c, 

 Schisophoria propinqua r, 



Spirifer sp. r, 

 Spirifer macrothyris c, 

 Platyceras sp. r, 

 Dafmanites sp. c, 

 Odontocephalus a-egeria c, 

 Fish remains c, 



S 56 g. Light gray, sub-crystalline limestone, in layers ten to 

 twenty-four inches thick. A three-foot barren zone near the middle, 

 and a trilobite zone near the top 5 feet, 4 inches. 



Camarotoechia Carolina c, 

 Camarotoechia tethys r, 

 Centronella glansfagea c, 

 Charionella scitula r, 

 Cyrtina hamiltonensis r, 

 Leptaena rhomboidalis r, 



Rhipidomella vanuxemi r, 

 Schizophoria pnopinqua c, 

 Spirifer duodenarius r, 

 Spirifer varicosus c, 

 Platyceras dumosum r, 

 Odontoceph-alus aegeria c. 



S 56 h. Layer of light gray, sub-crystalline limestone . .3 feet, 2 in. 



Cystiphytlum amer<icanum 

 Dolatocrinus sp. r, 

 Nucleocrinus sp. r, 

 Athyris vittata c, 

 A try pa aspera r, 

 Atrypa reticularis a, 

 Camarotoechia Carolina c, 

 Centronella glansfagea a, 

 Charionella scitula r, 

 Chonetcs inucronatiis r, 

 Craniella hamiltonae r, 

 Cyrtina hamiltonensis c, 

 Eunella sp. r, 

 Leptaena rhomboidalis r, 

 Meristella sp. r, 

 Nucleospira ventricosa c, 

 Pentamerella arataf r, 

 Pholidops hamiltonae r, 

 Pholidostrophia iowensis : 

 Proditctclla spinulicosta r, 

 Reticularia fimbriata c, 

 Rhipidomella vanuxetni a, 

 a.Rhynchonella sp. c. 



Schisophoria propinqua c, 

 Schucher>tella cf. pandora r, 

 Spirifer duodenarius a, 

 Spirifer varicosus c, 

 Stropheodonta concaz'a r, 

 Stropheodonta demissa r, 

 Stropheodonta inaequistriata c, 

 Stropheodonta patersoni r, 

 Stropheodonta sp. r, 

 Actinopteria sp. r, 

 Aviculopecten termitialis r, 

 Orthonychia dentalia r, 

 Platyceras blatchleyi c, 

 Platyceras carinatum r, 

 Platyceras dumosum c, 

 Platyceras erectum r, 

 Platyceras subrectum r, 

 Platyostoma turbinata cochleata r, 

 Dalmanites cf. calypso r, 

 Dalmanites sp. r, 

 Odontocephalus aegeria r, 

 Proetus cf. clarus r. 



