The Geology of Cincinnati. 75 
The Lorraine in Ohio is easily separable on faunal grounds, 
with corresponding more or less well-marked lithological 
characters, into six series of beds or subdivisions. In de- 
sceuding order these.are : 
6. Warren or Homotrypa bassleri Beds, .  . . about 8o feet. 
5. Mt. Auburn or Platystrophia lynx Beds . . . about 20 feet. 
4. Corryville or Chiloporella nicholsoni Beds, . . about 60 feet. 
3. Bellevue or MWonticulipora molesta Beds, . . . about 20 feet. 
2. Fairmount or Vekayia aspera Beds, . .  . . about 80 feet. 
1. Mt. Hope or Amplexopora septosa Beds, . . about 50 feet. 
The Lorraine is exceedingly fossiliferous. Throughout 
the trepostomatous bryozoa are very abundant. Some forms 
it has in common with the underlying Utica and the over- 
lying Richmond, yet the number is surprisingly small in 
comparison with the entire fauna. Owing to their usually 
having a restricted range, the bryozoa are excellent horizon 
markers. 
The species which range through the Lorraine, though in 
some beds, as, e. g., the Bellevue Beds, they may occur very 
rarely, are as follows: 
CGELENTERATA. 
Labechia? papillata (James). (c) 
ECHINODERMATA. 
Heterocrinus heterodactylus Hall, varieties. 
Iocrinus subcrassus Meek and Worthen, varieties. 
Lepidodiscus cincinnatiensis (Roemer). 
BRYOZOA. 
Ceramoporella ohioensis (Nicholson) (c) 
Stomatopora arachnoidea (Hall). (c) 
Stomatopora delicatula (James). 
BRACHIOPODA. 
Crania lzelia Hall. Rafinesquina alternata Conrad- 
““  seabiosa Hall (c) Emmons. (c) 
Hebertella sinuata (Hall). (c) Trematis millepunctata Hall. 
Platystrophia laticostata (James- Zygospira modesta Say-Hall. (c) 
Meek), and varieties. (c) 
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