123 



S 56 m. Layer of dark gray, impure limestone 10 inches. 



Atrypa aspera r, 

 Atrypa reticularis c, 

 Camarotocchia Carolina c, 

 Chonetes yandellanus c, 

 Leptostrophia perplana a, 

 Prodnctella spinulicosta c, 

 Rhiipiilomella vanuxemi c, 

 Schisophoria propinqua r, 

 Spirifer acuminalus? r, 

 Stropheodonta concava r, 

 Stropheodonta deinissa r, 



S 56 n. Bed of dark gray to drab limestone, in imperfect layers 

 three to eight inches thick, with intercalated thin bands of 

 chert 3 feet, 6 inches. 



Stropheodonta inaequiradiata r, 

 Tentaculites scalariformis c, 

 Aviculopecten e.vacntus r, 

 Schizodus sp. r, 

 Orthonyc)na dent alia r, 

 Platyceras sp. r, 

 Platyceras carinafum r, 

 Phtacops cristata c, 

 Proctus sp. r, 

 Onychodus sigmoides r 



Amplexus yandcUi r, 



Dendropora cf. elegantula r, 



Nucleocrinus sp. r, 



Nucleocrinus verneuili r, 



Cystodictya gilber>ti r, 



Fenestella stellata r, 



Orthopora sp. r, 



Polypora cf. quadrangularis r, 



Semicoscinium sp. r, 



Ambocoelia umbonata r, 



Athyris vittata c, 



Atrypa aspera c, 



Atnypa reticularis a, 

 *Camarophoria gainesi c, 



Camarotocchia Carolina c, 



Camarotocchia sappho c, 



Charionella scitula c, 



Chonetes mucronatus c, 



Chonetes yandellanus r. 



Crania crenistriata r, 



Craniella hamiltonae r, 



Cyrtt'na hamiltonensis c, 



Leptaena rhoinboidalis r, 



Leptostrophia perplana a, 



Orbiculoidca ampla r, 



Pentamerella papilionensis r, 



Pholidops h-amiltonae r, 



Pholidostrophia iowensis r, 



Productella spinulicosta a, 



Rhipidomella vanuxemi c, 



Rhynchonella cf. louisvillcnsis r, 

 *Ths species was described by Nettelroth 

 spoon-shaped spondylium as in Camarophoria 



S 56 o. Bed of hard, grayish-brown limestone, in imperfect layers 

 which on weathering appear to be three to twelve inches thick. Fos- 

 sils most abundant in a two-foot zone near the middle. .22 feet, 6 inches. 



Roemerella sp. r, 

 Schisophoria propinqua c, 

 Schuchertella chemungensis perversa r, 

 Spirifer sp. r, 

 Spinifer macrus r, 

 Spirifer varicosus r, 

 Stropheodonta concava c, 

 Stropheodonta inaequistriata r, 

 Stropheodonta inaequistriata var. c, 

 Stropheodonta inaequiradiata r, 

 Stropheodonta patersoni c, 

 Aviculopecten sp. c, 

 Aviculopecten sp. c, 

 Aviculopecten exacutus r, 

 Aviculopecten terminalis r, 

 Cf. Actinopteria boydi c, 

 Glyptodesma occidentalis r, 

 Cypricardinia indenta r, 

 Modioinorpha lingiiiformis r, 

 Cf. Pterinopecten multiradiatus r, 

 Igoceras conicum c, 

 Murchisonia sp. r, 

 Platyceras blatchleyi c, 

 Platyceras carinatuin r, 

 Platyceras dnmosum r, 

 Stropliostylus varians r, 

 Gomphoceras sp. r. 

 Dalmanites calypso r, 

 Phacops rana c, 

 Proetus clarus r. 

 Proetus sp. r. 

 as Rhynchonella gainesi, but it possesses a 



Atrypa reticularis r, 

 Camarotocchia Carolina c, 

 Camarotocchia horsfordi c, 

 Camarotocchia tethys c, 

 Chonetes yandellanus a, 

 Leptostrophia perplana r, 

 Pholidops hamiltonae r, 

 Pholidostrophia iowensis r, 

 Productella spinulicosta r, 

 Spirifer macrus? c. 



Spirifer varicosus c, 

 Stropheodonta concava r, 

 Stropheodonta demissa c, 

 Tentaculit'es scalariformis 

 Paracyclas elliptica r, 

 Platyceras blatchleyi r, 

 Platyceras carinatum r, 

 Platyceras erectuui r, 

 Proetus sp. r. 



