AUTHOR’S ABSTRACT OF THIS PAPER ISSUED 
BY THE BIBLIOGRAPHIC SERVICE, JUNE 12 
ON THE ENDOCRANIAL ANATOMY OF SOME OLIGO- 
CENE AND PLEISTOCENE MAMMALS 
ROY L. MOODIE 
Department of Anatomy, University of Illinois, Chicago 
TWENTY-FIVE FIGURES 
CONTENTS 
ITEEOGUCHIONE, pane. ies. cee Lee 5 BAS OPES AD ees Clo etn SO Roti eeIO 343 
IGE EAGLE sya ericrag te oe: asics aaicbaot ©. cakenortee eran, Soe ke ae ae ene Ciera eS iy 344 
INT AG ODIAIS sn tens eie es Nie & SAS See SSO SER he Hye Sse cele elev hentia srateere eueteaaehe eigpatean rnd ayedc vole 345 
DEscription-Olendocranialicastec seer ers. -acecias oer antes terete rae 346 
Tee(ofe (VOMUDSS Beh: S626 ees er ls OAR oe AOE REM DS eee SA REA TA Lo rT See irre Se 347 
Insectivors 5 Netops) ce. ast donee osm ieteis sts else sha ecg ds hes. cy EEO © eich See 348 
Carmicors(Nelirgided).. se: sthe. 2. 3k we cele ee oe nas Eee ee 351 
MAT UTS ee a sm Cpr terse pean /kue.c crave camer teow Sree ere rare is ako Neue eneragare «Ls Sie 351 
Undetermined carnivore, possibly Hoplophoneus.................. 353 
Sintlodipnia alts isestdy Se7Keb ais Elo a SA OATE R= 2 10- Sa eee a: 307 
GHATONOLS SS che Rem 5 SEARO Role omit on ae earn fete c oi crOnn RE che ae MARI REN ery gee, Seber a 359 
Da pHaeriUs TOMMUS Weldhy savers. 22 Bh Scher eo Mais sot re ah oF soviiela aa 359 
WENnGeyVOu (Anis) GUS ACTA Y Ts seni. fay. een eee ree ese es ee: 361 
Arhiagaetylas. te a... >see OLE) Lee POTS eye. STAINS. Ad Pe 365 
Oreodon (Merycoidodon) culbertsoni Leidy...................0005: 365 
CreGaGnrAlaCnis LEIGy-nake Mere sige we PUNE t gole S eile ss be oe oer eg os 365 
IMeryCOCHOETUSH tt Savarese etre GREE ee owe oer ote we. 5 Che ea areas 367 
Mesahippiis!... os Pou? LRP S. SRA SO. MORI P GT OE a 367 
SUN Saye yy oe yok Rica tte RF eS SEIS CAR FSB E Pe POSE RU ors « REA CIEE BG 369 
LESH RED EO UAEN y ES(0 11 UE A og PS Ce des SRE 9 Wn Beer 370 
PISt Ol ab OReWAM EONS en. et er ete HI rok © PSR fee hh Ges 0 ado at Hele ae a 371 
Description of foumesr os. 9 BE ona Mae. OM a 372 
INTRODUCTION 
It has been generally assumed by students of comparative 
neurology that ancient mammalian brains are primitive in nature 
and that throughout geologic time there has been an evolution 
of the cerebral cortex. Such an evolution is indicated in the 
aeluroid and cynoid casts described herewith, this being the first 
direct comparison of ancient and modern forms to bring out 
this point. 
343 
