Ixxiv THE PALEONTOLOGY OF MINNESOTA. 
Tetradium speachii, 80. 
var. canadensis, 80. 
Tetragonis, 61. 
Textilaria triseriata, 32. 
Textularia, 29, 28, 31. 
agglutinans, 30, 52. 
americana, 29. 
attenuata, 30. 
corinata, 30, 52. 
var. attenuata, 30. 
globulosa, 29, 52. 
lacera, 30. 
missouriensis, 29. 
turris, 30, 52. 
Textularide, 29. 
Textulariane, 29. 
Thamniscus, 106, 111, 215. 
Thamnotrypa, 106. 
Thecidium, 335. 
Tiliacea, 5 
Tissue, vesicular, 98. 
Todae, 5. 
Trematella, 228, 264, 309. 
annulata, 229. 
corticosa, 265. 
Trematis, 867, 361, 368, 371. 
filosa, 370. 
huronensis, 368%. 
millepunctata, 368. 
ottawensis, 369%, 367. 
punctostriata, 367. 
quincuncialis, 368. 
terminalis, 3868, 362, 337. 
umbonata, 367. 
Trematopora, 308, 107, 206, 289, 290, 302, 309. 
corticosa, 265. 
echinata, 265. 
nitida, 308. 
ornata, 310. 
primigenia, 309, 308, 310. 
var. ornata, 310. 
var. spinosa, 310. 
tuberculosa, 308. 
Trematoporide, 107, 289, 290. 
Trematospira quadriplicata, 459. 
Trenton shales, Bryozoa, 96. 
Trepostomata, 214, 96, 98, 100, 105, 106, 108-111, 
168, 206, 207, 235, 277, 289, 298, 313. 
Trianisites cliffordi, 246. 
Trias, flora, 2. 
Triassic Bryozoa, 111. 
Trigonodictya, 160, 145, 147, 148. 
conciliatrix, 160, 284. 
eatonensis, 160. 
Trimerella, 354. 
Trimerellidee, 354, 357. 
Trinucleus concentricus, 362. 
Triplecia, 408, 409. 
cava, 408. 
extans, 409. 
nucleus, 409. 
radiata, 409, 408. 
sporiferoides, 409, 408. 
ulrichi, 409%. 
Trochammina, 28. 
inflata, 28, 52. 
squamata var. inflata, 28. 
Trochammine, 28. 
Tropidopora, 106. 
Truncatulina budensis, 45. 
Tubuli, median, 98, 104; spiniform, 98. 
Tubuliporide, 107. 
Ulmannia, 2. 
Ulodendron, 2. 
Unio, 53. 
dane, 53. 
subspatulatus, 53. 
Unitrypa, 106, 109, 110. 
Urgonian, flora, 3, 5. 
Uvigerina, 39, 28. 
asperula, 39, 52. 
canariensis, 39, 52. 
farinosa, 39. 
gracilis, 39. 
hispida, 39. 
irregularis, 39. 
nodosa, 39 
orbigniana, 39. 
procidea, 59. 
urnula, 39. 
Valchia, 2. 
Valve, dorsal or brachial, 335. 
ventral or pedicle, 335. 
Ventral (pedicle) valve, 335. 
Verneuilina, 32, 28. 
pygmea, 32, 52. 
Vesicular tissue, 98. 
Vesicularia, 112. 
Vibracula, 97. 
Vinella, 112, 107, 109, 113. 
radialis, 113*, 115. 
radiciformis, 114. 
var. conferta, 118*, 114, 115. 
repens, 114. 
Viviparus raynoldsanus, 53. 
Volzia, 2. 
Waldheimia bicarinata, 472. 
mawii, 472. 
Wandrohrchen, 98. 
Wandstringe, 98. 
Wealden, flora, 3, 2, 5, 7. 
Worthenopora, 105, 111. 
Worthenoporide, 105. 
Zamiex, 3. 
Zoantharia, 83 
Zoarium, 98. 
method of growth, 102. 
various kinds, 102, 103. 
Zocecial covers, 98, 104, 
Zocecium, 98. 
Zygospira, 465, 466, 470, 
anticustiensis, 466. 
aquila, 474. 
