722 
INDEX    TO    NORTH    AMERICAN    GEOLOGY 
Paleontology— Continued. 
Genera  and  species  described — Continued. 
Textularia  carinatus,  Guppy,  4. 
gramen  d'Orbigny,  Bagg,   1,  6. 
gramen,  Guppy,  4. 
sagittula,  Guppy,  4. 
sagittula  Defrance,  Bagg,  1,  6. 
snbangulata  d'Orbigny,  Bagg,  1,  6. 
trochus,  Guppy,  4. 
Thalassoceratidae,  Hyatt  and  Smith,  1. 
Tbalattosauria,  Merriam  (J.  C),  15. 
Thalattosauridae,  Merriam  (J.  C),  15. 
Tbalattosaurus  Merriam,   Merriam    (J. 
C),  15. 
Thalattosaurus  alexandrre  n.  gen.  and 
n.  sp.,  Merriam  (J.  C),  11,  12,  15. 
perrini  n.  sp.,  Merriam  (J.  C),  15. 
shastensis  n.  sp.,  Merriam  (J.  C), 
15. 
Thaleops   ovata   Conrad,    Raymond    (P. 
E.),  5. 
Thalotia  Gray,  Arnold,  2. 
caffea  Gabb,  Arnold,  2. 
Tbamniscus  King.  Condra,  2. 
palmatus     n.      sp.      (provisional), 
Condra,  1. 
palmatus      (provisional)      Condra, 
Condra,  2. 
pinnatus  n.  sp..  Condra,  1. 
pinnatus  Condra,  Condra,  2. 
sevillensis  Ulrich,  Condra,  2. 
Tbamnoeladus  elarkei  n.  gen.   and  sp., 
White  (D.),  6. 
Thecachampsa  Cope,  Case,  9. 
?  antiqua   (Leidy),  Case,  9. 
?  contusor  Cope,  Case,  9. 
contusor  Cope,  Case,  1. 
marylandica  Clark,  Case,  1. 
sericodon   (  ?)   Cope,  Case,  1. 
?  sericodon  Cope,  Case,  9. 
?  sicaria  Cope,  Case,  9. 
sp..  Case,  1. 
Thecalia  H.  and  A.  Adams,  Dall,  8. 
Thecia  kentuckyensis  n.  sp.,  Herzer,  5. 
schriveri  n.  sp.,  Herzer,  5. 
Thecodonta    (Dicranodesma)    calverten- 
sis  n.  sp.,  Glenn,  G. 
Thenaropus   heterodactylis   King,   Mat- 
thew (G.  F.),  25. 
Theonoa   giomerata   n.   sp.,   Ulrich   and 
Bassler,  4. 
Theranopus   mcnaughtoni   n.   sp.,   Mat- 
thew (G.  P.),  23. 
Theriodontia  Broom,  Case,  11. 
Therocephalia  Broom,  Case,  11. 
Theropleura   uniformis,   Case,   6. 
Thetironia  Stoliczka,  Dall,  8. 
Thinnfeldia  Ettings.,  Berry,  3. 
fontainei  n.  n.,  Berry,  3. 
Thinnfeldia    marylandica    n.    sp.,    Fon- 
taine, 5. 
snbintegrifolia    (Lesq.)    Knowlton, 
Hollick,   4. 
variabilis  Tel.?,   Hollick,   4. 
variabilis  Fontaine,  Fontaine.  5. 
Thinohyus        (Bothrolabis)        decedens 
Cope.  Sinclair,  6, 
Paleontology— Continued. 
Genera  and  species  described — Continued. 
Thinohyus     (Bothrolabis)     osmonti     n. 
sp.,  Sinclair,  6. 
Thomonys  microdon  n.  sp.,  Sinclair,  7. 
Thoracoceras  wilsoni  n.  sp.,  Clarke,  2. 
wilsoni  Clarke,  Wilson  (J.  D.),  1. 
Thracia  (Leach)  Blainville,  Arnold,  2. 
Thracia  Blainville,  Dall,  8. 
section  Ixartia  Leach,  Dall,  8. 
section  Thracia  s.  s.,  Dall,  8. 
conradi  Couthouy,  Dall,  8. 
conradi  Couthouy,  Glenn,  0. 
dilleri  Dall,  Dall,  8. 
karquinesensis  n.  sp.,  Weaver,  1. 
?  maloniana  n.  sp.,  Cragin,  2. 
transversa   Lea,  Dall,  8. 
trapezoides   Conrad,   Arnold,   2. 
Thryptodus  n.  gen.,   Loomis,   1. 
rotundas  n.  sp.,  Loomis,  1. 
zitteli  n.  sp.,  Loomis,  1. 
Thuites  sp.,  Knowlton,  14. 
Thuja     cretacea?      (Ileer)      Newberry, 
Knowlton,  18. 
sp.,  Penhallow,  G. 
Thyasira    (Leach)    Lamarck,   Dall,   8. 
section  Axinulus  Verrill  and  Bush, 
Dall.  8. 
section  Thyasira  s.  s..  Dall,  8. 
bisecta  Conrad,  Arnold,  2. 
bisecta  Conrad,  Dall,  8. 
flexuosa  Montagu,  Dall,  8. 
gouldi  Philippi,  Arnold,  2. 
tiisinuata  Orbigny,  Dall,  8. 
Thysanocrinus  arborescens  n.  sp..  Tal- 
bot, 2. 
Thyrsopteris       crassinervis       Fontaine, 
Fontaine,  5. 
decurrens  Fontaine,  Fontaine,  5. 
elliptica  Fontaine,  Fontaine,  4. 
meekiana  Fontaine,  Fontaine,  5. 
murrayana       (Brongniart)       Deer, 
Fontaine,  1,  2. 
rarinervis      Fontaine?,      Fontaine, 
Thysanocrinus  Hall,  Grabau,  1. 
liliiformis  Hall,  Grabau,  1. 
Tilia  weedii  n.  sp.,  Knowlton,  12. 
Timoclea  Brown,  Dall.  8. 
Tirolites  Mojsisovics,  Hyatt  and  Smith, 
1. 
(Metatirolites)    foliaceus   Dittmar, 
Hyatt  and  Smith,   1. 
pacificus  n.  sp.,  Hyatt  and  Smith, 
1. 
Titanotherium,  Hatcher,  7. 
dispar  Marsh,   Hatcher.   7. 
ingens  Marsh,  Osborn,  10. 
heloceras  Cope,  Osborn,  10. 
trigonoceras  Cope,  Osborn,  10. 
Tivela  Link,  Arnold,  2. 
Tivela  Link,  Dall,  8. 
section  Eutivela  Dall,  Dall,  8. 
section  Pachydesma   Conrad,   Dall, 
8. 
section  Tivela  s.  s.,  Dall,  8. 
crassatelloides  Conrad,  Arnold,   2, 
