472 
INDEX. 
Psammodus (cont.). 
bretonensis, 459. 
caelatus, 107. 
canaliculatus, 100. 
cornutus, 91. 
crassidens, 107. 
expansus, 105. 
glyptus, 107. 
grandis, 107. 
inflexus, 107. 
lovianus, 108. 
orbicularis, 108. 
plenus, 108. 
porosus, 100, 107. 
reticulatus, 108. 
(?) rbomboideus, 188. 
rugosus, 100, 107. 
salopiensis, 105, 187. 
semicylindricus, 188. 
specularis, 107. 
springeri, 108. 
trapeziformis, 105. 
tumidus, 108. 
turgidus, 103. 
Fsephodus, 170, 176. 
crenulatus, 184. 
dentatus, 184. 
depi’essus, 185. 
dubius, 183. 
indicus, 184. 
lasvissimus, 181. 
latus, 184. 
lunulatus, 185. 
magnus, 177, 236. 
minor, 184. 
obliquus, 184. 
placenta, 184. 
regularis, 184. 
(?) reticulatus, 185. 
salopiensis, 182, 183. 
simplex, 185. 
symmetricus, 185, 
Pternodus, Owen, 23. 
Pternodus, Gar man, 27. 
productus, 10. 
springeri, 27. 
Ptychacanthus, 124, 
244. 
faujasii, 124. 
sublasvis, 245. 
Ptychodus, 75, 132. 
altior, 133, 136. 
concentricus, 459. 
decurrens, 132, 133, 
138, 147. 
depressus, 138. 
janevaii, 151. 
latissimus, 139, 143, 
i47. 
mammillaris, 133. 
marginalis, 459. 
Ptychodus (cont.). 
mortoni, 149.- 
multistriatus, 146. 
“nascent” teeth of, 
150. 
occidentalis, 151. 
^oweni, 138. 
papillosus, 152. 
paucisulcatus, 147. 
polygyrus, 139, 143, 
148 , 
rugosus, 136. 
schlotheimi, 147. 
sulcatus, 459. 
triangularis, 152. 
trigeri, 136. 
whippleyi, 152. 
Ptychopleurus, 124. 
faujasii, 124. 
Raja, 85. 
agassizii, 88. 
antiqua, 87. 
applanata, 88. 
batis, 89. 
bicornuta, 88. 
borussica, 88. 
cavernosa, 88. 
clavata, 87. 
evacuafcq 88. 
expansa, 85. $ £ 
grandis, 88. 
(?) Helvetica, 88. 
lobata, 88. 
mammillaris, 88. 
minor, 85. 
molassica, 88. ' 
muricata, 153. 
ornata, 88. • : - , i 
philippi, 88. gY 
primarmata, 85. 
pulchra, 88. 
rhombidens, 88. 
rugosa, 88. . 
similis, 86, and PI. IY. 
spiralis, 89. ftfl 1 M 
strangulata, 89. 
suboxyrbynclms, 89. 
torpedo, 90. i’ti 
Rajid.e, 84. 
Rhamphodus, 226. 
dispar, 226. 
Rhina, 65. 
Rhinobatidai, 77. 
Rhinobatus, 77. 
bugesiacus, 78. 
expansus, 85. afrt ^ 
l v * 
grandis, 80. ^ 
intermedius, J32. ^ 
Rhinobatus (cont.). 
latus, 82. 
maronita, 80. 
martensii, 83. 
morinicus, 80. 
obtusatus, 82. 
primasvus, 82. 0 , 
tenuirostris, 81 
Rhinognathus, 351. 7 — 
lewisii, 351. 
Rhinoptera, 125. - j0r j. 
daviesii, 126. v 
dubius, 127. 
studeri, 127. 
woodwardi, 127. . 
Rhombodus, 152, " •' -r 
binkhorsti, 152. A+&***' 
Rhymodus, 91. 
convexus, 99. 
oblongus, 96. 
transversus, 97- 
Sandalodus, 185. 
angustus, 187. 
carbonarius, 188. 
complanatus, 189. 
convexus, 190. 
crassus, 190. 
grandis, 188. y ^ j 
laevissimusq 188. 
minor, lSfDso*^ * /fo fyvy 
morrisii, 185. 
novo-mexicanus, 190. 
parvulus, 190, 217. 
robustus, 190. 
spatulatus, 190. 
tenerrimus, 190. 
vetustus, 190. 
Scaldia, 65. 
biforis, 71. 
Scapanorhynchus,^^ 
351, 360. 
elongatus, 353. 
gigas, 358. SSy 
lewisii, 351. 7 ^ ssy 
rhaphiodon, 353.^^^^, 
subulatus, 356, 358 . Jst 
Sclerorhynchus, 76 Zibn’c*.****' 
atavus, 76. ttStpcr* / 
Scoliodon, 
eocamus, 436^*-^,. 
lrr*n n aci AST 
VT <1^ 
kraussi, 437 
orpiensis, 436. 
priscus, 380, 437. 
SCYLLIIDiE, 338. 
Seylliodus, 340, 347. 
antiquus, 340, 347. 
crassiconus, 343. 
huraboldti, 343. 
Scyllium, 340. 
acre, 342. 
