690 
INDEX    TO    NORTH    AMERICAN    GEOLOGY 
Paleontology— Continued. 
Genera  and  species  described — Continued. 
Onychochilus     (?)     nitidulus?     Clarke, 
Wood  (Elvira),  1. 
Oodectes    perpestoides    n.    gen.    et    sp ., 
Wortman,  3,  4. 
Opalia  H.  and  A.  Adams,  Arnold,  2. 
anornala  Stearns,  Arnold,  2. 
borealis  Gould,  Arnold,  2. 
crenatoides     Carpenter,     var.     in- 
sculpta  Carpenter,  Arnold,  2. 
varicostata  Stearns,  Arnold,  2. 
Ophiceras  Griesbach,  Hyatt  and  Smith, 
1. 
dieneri  n.  sp.,  Hyatt  and  Smitb,  1. 
spenceri  n.  sp.,  Hyatt  and  Smitb, 
1. 
Ophileta  alturensis  n.  sp.,  Sardeson,  2. 
complanata  Vanuxem,  Cleland,  3. 
fausta  n.  sp.,  Sardeson,  1. 
levata  Vanuxem,  Cleland,  3. 
?  sp.  undet.,  Weller,  6. 
Opbioderma?  sp.,  Clark  (W.  B.),  7. 
Opbtbalmosaurus,  Gilmore,  3. 
Ophthalmosaurus,   Merriam,   6. 
Oppelia?  fallax  (Castillo  and  Aguilera), 
Cragin,  2. 
Orbicella  Dana  1846,  Yaughan,  2. 
aeropora   (Linnaeus),  Vaugban,  2. 
cavernosa   (Linnaeus),  Yaughan,  2. 
tenuis  Duncan,  Yaughan,  2. 
?  texana  n.  sp.,  Vaughan,  17. 
Orbiculoidea  ampla  (Hall),  Weller,  6. 
convexa   (Shumard),  Beede,  1. 
doria  Hall,  Kindle,  1. 
jervensis  Barrett,  Weller,  6. 
lamellosa   (Hall).  Weller,  6. 
lodiensis    (Yanuxem)  ?,  Kindle,   1. 
manhattanensis    (Meek    and    Hay- 
den),  Beede,  1. 
manhattanensis  Meek  and  Hayden, 
Girty,  3. 
missouriensis  (Shumard),  Beede,  1. 
parva  n.  sp.   (Rowley),  Greene,  2. 
sp.,  Girty,  3. 
sp.  undet.,  Weller,  6. 
Orbiculus  Megerle,  Dall,  8. 
Orbignyella  n.  gen.,  Ulrich  and  Bassler, 
2. 
sublamellosa    n.    sp.,    Ulrich    and 
Bassler,  2. 
Orbitremites    grandis    n.    sp.,    Rowley, 
Greene,  5. 
oppelti  n.  sp.,  Rowley,  Greene,  5. 
Orbulina  universa  d'Orbigny,  Bagg,  9. 
Orchestes  avus  n.  sp.,  Scudder,  1. 
Oreodon  macrorhinus  n.  sp.,  Douglass,  8. 
robustum  n.  sp.,  Douglass,  4. 
Oreobelix  yavapai  compactula  n.  subsp., 
Cockerel  1.  2. 
Oricardinus  sheari  Cope,  Hay,  10. 
tortus  Cope,  Hay,  10. 
Oriostoma  huntingtonensis  n.  sp.,  Kin- 
dle and  Breger,  1. 
huntingtonensis  var.  alternatum  n. 
var.,  Kindle  and  Breger,  1. 
?  opercula,  Kindle  and  Breger,  1. 
Paleontology— Continued. 
Genera  and  species  described — Continued. 
Oriostoma    plana    n.    sp.,    Kindle    and 
Breger,  1. 
sp.  undet.,  Kindle  and  Breger,  1. 
Ornitbichnites        gallinuloides        King, 
Matthew  (G.  F.),  25. 
Ornithoides  n.   gen.,  Matthew    (G.  F.), 
21,  30. 
?  adamsi  n.  sp.,  Matthew    (G.  F.), 
30. 
trifldus  Dawson,  Matthew  (G.  F.), 
30. 
Ornitholestes  hermanni  n.  gen.  and  sp., 
Osborn,  16. 
hermanni  Osborn,  Lambe,  9. 
Ornithomimus  altus  n.  sp.,  Lambe,  3,  9. 
sedens  Marsh,  Lambe,  9. 
Ornithostoma,  Langley,  2. 
Ornithostoma,  Lucas,  18. 
ingens  Williston,  Lucas,  10. 
Orodus  intermedins  n.  sp.,  Eastman,  10. 
Orohippus?  sp.,  Hatcher,  3. 
Orophocrinus  conicus?  W.  &  Sp.,  Row- 
ley, 4. 
stelliformis  O.  &  S.,  Rowley,  4. 
Orophosaurus  Cope,  Williston,  14. 
Orthidium    lamellosa   n.    sp.,    Raymond 
(P.  E.),  7. 
Orthis  Dalman,  Grabau,  1. 
acutiplicata   n.    sp.,    Raymond    (P. 
E.),  7. 
corpulenta  n.  sp.,  Sardeson,  9. 
(Orusia?)       eurekensis       Walcott, 
Walcott,  12. 
(Finkelnburgia)       finkelnburgi      n. 
sp.,  Walcott,  12. 
flabellites  Foerste,  Grabau,  1. 
flabellites  Foerste,  Kindle  and  Bre- 
ger. 1. 
flabellites  Foerste,  Weller,  6. 
ignicula  n.  sp.,  Raymond  (P.  E.),  7. 
lenticularis  Dalman,  Matthew    (G. 
F.),  20. 
(Orusia)    lenticularis   Wahlenberg, 
Walcott,  12. 
(Orusia)      lenticularis     atrypoides 
Matthew,  Walcott,  12. 
(Orusia)      lenticularis     lyncioides 
Matthew,  Walcott,  12. 
macrior  n.  sp.,  Sardeson,  9. 
minnesotensis  n.  sp.,  Sardeson,  9. 
newtonensis  n.  sp.,  Weller,  6. 
(Finkelnburgia)      osceola     n.     sp., 
Walcott,  12. 
(Finkelnburgia)    osceola  corrugata 
n.  var.,  Walcott,  12. 
(Billingsella)    pepina   Hall,   Sarde- 
son, 2. 
petrse  n.  sp.,  Sardeson,  9. 
(  ?)  punctostriata  Hall,  Grabau.  1. 
rogata  n.  sp.  or  var.,  Sardeson.  9. 
?  subnodosa  Hall,  Kindle  and  Bre- 
ger, 1. 
tersus  n.  sp.,  Sardeson,  9. 
(Dalmanella)    testudinaria.    Hayes 
and  Ulrich,  1. 
