256 



1. Arthoclema cornutum Ulrich <* 



2. ( lalymene senaria Conrad r-c 



3. Chasmotopora reticulata Hall r-c 



4. Orinoid segments e 



5. Dalmanella testudinaria (Dalman) aaa 



0. Escharopora recta (Hall) r 



7. Hemiphragma tenuimurale Ulrich r 



8. Leptotrypa sp r 



9. Mitoclema? mundulum Ulrich a 



10. Xematopora oralis Ulrich r-c 



1 1 . Pachydictya acuta (Hall) c 



12. Platystrophia trentonensis n. sp a 



13. Plectambonites serieeus (Sowerby) c 



14. Prasopora conoidea Ulrich <■ 



15. Raflnesquina alternata (Emmons) r-c 



16. Rhinidictya exigua Ulrich r-c 



17. Rhinidictya mutabilis (Ulrich) r-e 



8. Prospect Quarry, below the crystalline layers. 



Below the heavy gray crystalline layer that caps the Trenton limestone 

 and in a very thin parting of 8 to 10 inches, that outcrops on the east side of 

 the gorge at Prospect in an old abandoned quarry opposite the large crusher 

 quarry, bryozoa are exceedingly abundant and are weathered out from the 

 matrix. A small Prasopora is very abdunant. 



The crystalline layers above contain a few bryozoa. but difficult to pre- 

 pare for study. 



The species collected from the weathered parting are as follows: 



1 . Corynotrypa inflata I Hall I r 



2. Crinoid segments a 



3. Dalmanella testudinaria (Dalman) c 



4. Eridotrypa exigua Ulrich c 



•j. Hallopora goodhuensis (Ulrich) a 



(5. Hemiphragma tenuimurale Ulrich a 



7. Isotelus gigas de Kay c 



8. Pachydictya acuta ( Hall) c 



9. Platystrophia trentonensis n. sp. c 



10. Pleclambonites serieeus (Sowerby) r-c 



