152 
BIBLIOGRAPHY AND INDEX OP N. A. GEOLOGY, [bull. 162. 
Paleontology — Continued. 
Genera and species described — Continued. 
Platecarpus gracilis, Williston, No. 902. 
ictericus, Williston, No. 902. 
latifrons, Williston, No. 902. 
latispinis, Williston, No. 902. 
mudgei, Williston, No. 902. 
oxyrbinus, WillistOD, No. 902. 
planifrons, Williston, No. 902. 
simus, Williston, No. 902. 
tectulus, Williston, No. 902. 
Platyodon Conrad, Dall, No. 184. 
Plectambonites producta, Hall and Clarke, 
No. 327. 
Plesiosaurus, Case, No. 135. 
Plethospira socialis n. sp., Girty, No. 299. 
Pleuracanthus, Case, No. 133. 
Pleurodon S. Wood, Dall, No. 184. 
woodii n. sp., Dall, No. 184. 
PleurostomellasubnodosaReuss, Bagg, No.27. 
Pliaucbenia Cope, Wortman, No. 935. 
bumpbresiana Cope, Wortman, No. 935. 
minima n. sp., Wortman, No. 935. 
spatula Cope, Wortman, No. 935. 
Plicatula Lamarck, Dall, No. 184. 
densata Conrad, Dall, No. 184. 
filamentosa Conrad, Dall, No. 184. 
var. concentrica, Dall, No. 184. 
var., Harris, No. 334. 
gibbosa Lamarck, Dall, No. 184. 
marginata Say, Dall, No. 184. 
Plioplatecarpus, Williston, No. 902. 
Pododesmus rudis Broderip, Dall, No. 184. 
scopelus n. sp., Dall, No. 184. 
(Monia) macroscbisma Desbayes, Dall, 
No. 184. 
Poebrotherium Leidy, Wortman, No. 935. 
labiatum Cope, Wortman, No. 935. 
wilsoni Leidy, Wortman, No. 935. 
Polymorphina amygdaloides, Bagg, No. 27. 
austriaca, Bagg, No. 27. 
communis, Bagg, No. 27. 
communis (d'Orbigny), Bagg, No. 27. 
complanata, Bagg, No. 27. 
compressa (d'Orbigny), Bagg, No. 27. 
elegantissima, Bagg, No. 27. 
emersoui n. sp., Bagg, No. 27. 
gibba (d'Orbigny), Bagg, No. 27. 
lactea, Bagg, No. 27. 
lactea elongata var. Brady, Bagg, No. 27. 
oblonga d'Orbigny, Bagg, No. 27. 
orbignii (Zborzewski), Bagg, No. 27. 
praelonga, Bagg, No. 27. 
problema (d'Orbigny), Bagg, No. 27. 
Polypora, Simpson, No. 702. 
Polystomella striatopunctata, Bagg, No. 27. 
Populites elegans Lesq. (?), Newberry, No. 
573a. 
Populus acerfolia Newb., Newberry, No. 573a. 
cordata Newb., Newberry, No. 573a. 
(?) cordifolia Newb., Newberry, No. 573a. 
cuneata Newb., Newberry, No. 573a. 
cyclophylla Heer, Newberry, No. 573a. 
(?) debeyana Heer, Newberry, No. 573a. 
elliptica Newb., dewberry, No. 573a. 
elongata Newb., Newberry, No. 573a. 
Paleontology — Continued. 
Genera and species described — Continued. 
Populus flabellum Newb., Newberry, No. 
573a. 
genetrix Newb., Newberry, No. 573a. 
herkeriana Lesq. ( ?), Hollick, No. 368. 
litigiosa Heer, Newberry, No. 573a. 
micropbylla Newb., Newberry, No. 573a. 
nebrascensis Newb., Newberry, No. 573a. 
nervosa Newb., Newberry, No. 573a. 
polymorpha Newb., Newberry, 573a. 
pyrifolia n. sp., Kircbner, No. 442. 
rbomboidea Lesq., Newberry, No. 573a. 
rotundifolia Newb., Newberry, No. 573a. 
smilacifolia Newb., Newberry, No. 573a. 
Portbeus lowii n. sp., Stewart, No. 745. 
Prasopora, Simpson, No. 702. 
Prioniodus armatus Hinde, Girty, No. 299. 
Prionocylus byattii Stanton, Logan, No. 498. 
laevianus Wbite, Logan, No. 498. 
macombi Meek, Logan, No. 498. 
woolgari Mantell, Logan, No. 498. 
wyomingensis Meek, Logan, No. 498. 
Prismopora, Simpson, No. 702. 
Proboscina, Simpson, No. 702. 
Procamelus, Leidy, Leidy, No. 481. 
Procamelus Leidy, Wortman, No. 935. 
gracilis Leidy, Wortman, No. 935. 
occidentalis Leidy, Wortman, No. 935. 
robustus Leidy, Wortman, No. 935. 
Productus cestriensis Worthen, Weller, No. 
860. 
cberokeensis n. sp., Drake, No. 239. 
pertenuis Meek, Drake, No. 239. 
(Marginifera) adairensis n. sp., Drake, 
No. 239. 
Prognatbosanrus, Williston, No. 902. 
Protaeoides dapbnogenoides Heer, Hollick, 
No. 368. 
Proterosaurus, Case, No. 135. 
Protocardia lenis var., Harris, No. 334. 
Prototicus inaequalia Newb., Newberry, No. 
573a. 
Protolabis Cope, Wortman, No. 935. 
transinontanus Cope, Wortman, No. 935. 
Protolambda n. gen., Osborn, No. 589. 
hatcberi n. sp., Osborn, No. 589. 
Protophyllum minus Lesq., Newberry, No. 
573a. 
multinerve Lesq., Newberry, No. 573a. 
sternbergii Lesq., Newberry, No. 573a. 
Protosphyraena recurvirostrisn. sp., Stewart, 
No. 748. 
Protospbyraeus bentonia n. sp., Stewart, No. 
745. 
n. sp., Stewart, No, 745. 
Protostega, Case, No. 135. 
iscbyra ( Wieland), Wieland, No. 882. 
Protriton, Case, No. 134. 
Protylopus petersoni n. gen. et sp., Wortman, 
No. 935. 
Proutella, Simpson, No. 702. 
Prunus variabilis Newb., Newberry, No. 
573a. 
Psammobia ozarkana n. sp., Harris, No. 334. 
Psammobiidae, Dall, No. 188. 
