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232284658.Pdf 235 I MANGIAGALLI has given his large the Istituto Ostetrico-Ginecologico ,f Milan, which bears his name. The i addition to 10,000 bound volumes, unbound treatises and rare complete SKULL AND SKELETAL REMAINS OF A ttific reviews. tents Dornalo, submarine specialists, RUMINANT OF THE PREPTOCERAS­ the course of the present season the ine views in the Medit!!rranean, in EUCERATHERIUM GROUP >m 40 to 50 meters, with the help of ts which will carry one man and a FROM THE )icture projector. Their purpose is submarine life in its natural sur­ McKITTRICK PLEISTOCENE, CALIFORNIA acting to the lighted area all species these depths. These views will be educational films. The work will to the tropical regions. BY Zionist Organization of America, CHESTER STOCK AND E. L. FURLONG ah, voted recently to expend $609,­ d health work in Palestine, most of Balch Graduate School of the Geological Sdcnces support the Hadassah Medical Or- California Institute of Technoloc . country. In addition to that bud­ Pasadena, California tion voted to raise $100,000 from ical service in Palestine. The need Contribution No. 9 in Palestine is considered urgent. pressed its gratitude in a unanimous UNIVERSITY OF CALIFORNIA PUBLICATIONS tan and Mrs. Straus, of New York, BULLEiiN 01' THE DEPARTMFNT 01' GEOLOGICAL SCIENCES : $250,000 for a health center in Volume 16, No. 10, pp. 409-434, plates 60-63, 5 figures in text rY AND EDUCATIONAL NOTES 11nting to $550,000 have been made hool of the University of Chicago; .rection and equipment of a building he Gertrude Dunn Hicks Memorial, irated as an orthopedic hospital, and :. Louis H. Kuppenheimer to estab­ t fund to be known as the Louis B. :uppenheimer Foundation. The in­ id for teaching and research in the hthalmology. B. ZuKER, head of the department of University of Dubuque since 1921, d acting president of that institution )tember 1, when the resignation of UNIVERSITY OF CALIFORNIA PRESS W ettstone, D.D., took effect. BERKELEY, CALIFORNIA w ARD, director of the Davis branch 1927 SKULL AND SK RUMINANT o: EU CERA' McKITTRICK PL CHESTER S UNIVERSITY OF CALIFOR.'<IA PUBLICA.TIONS BULLE.'r-IN OF THE DE.PA.ItTMENT OF GEOLOGICAL SCIENCES Volume 16, No. 10, pp. 409-434, pla~ es 60-63, 5 figures in text Issued January 25, 1927 Introduction ............................... Description of material .... ........ Preptoceras? cf. sincZairi Fm Resume of characters exhibitec UNIVERSITY OF CALIFORNIA. PRESS Relationship of Preptoceras an BEll.K!!:LEY, CALIFORNIA. Explanation of plates .............. CAMBRIDGE UNIVERSITY PRESS I LONDON, ENGLAND In studies of the Pleist the ruminant genera Pre: be regarded as characteris of the State. Although t: Brea is unusually comple ungulates has been found asphalt deposit of McKi occurrence in Los Angel, fornia, the discovery of Charles H. Sternberg ad1 of mammals recorded fro The recognition of a therium group in the M that a faunal difference La Brea stages of the P: for by a geographic sel?~ member of this group an 1 Merriam, J. C., and St1 cation 347, pp. 37-42, 1925. SKULL AND SKELETAL REMAINS OF A RUMINANT OF THE PREPTOCERAS­ EUCERATHERIUM GROUP FROM THE McKITTRICK PLEISTOCENE, CALIFORNIA BY PUBLICATIONS CHESTER STOCK A..."ID E. L. FURLONG · GEOLOGICAL SCIENCES ~s 60-63, 5 figures in text i, 1927 CONTENTS PAGE Introduction --- -·---·························· ·· ·····-······-·· ·----------------·············-····-·················-········- 409 Description of material ---- ·····················-·······--························································-·· 410 Preptoceras? cf. sinclairi Furlong ····················-···-·--· --"-·····-.. ·············-················ 410 Resum~ of characters exhibited by McKittrick material .................................. 425 tNIA PRESS Relationship of Preptoceras and Euceratherium ................................................. 425 ORNIA Explanation of plates ·······-··--·········· ································--·-··-----·-·······----···········'······-- 438 l.'Y PRESS INTRODUCTION rnD In studies of the Pleistocene mammalian assemblages of California the ruminant genera Preptoceras and Euceratheriuni have come to be regarded as characteristic of the faunas known Iriom cave deposits of the State. Although the record of mammalian life at Rancho La Brea is unusually complete, it is noteworthy that no trace of these ungulates has been found. With continuation of excavations in the asphalt deposit of McKittrick, Kern County, situated between the occurrence in Los Angeles and the cave deposits of northern C~li­ fornia, the discovery of remains of one of these ruminants by Mr. Charles H. Sternberg adds a new and important member to the list of mammals recorded from this horizon. The recognition of a representative of the Preptoceras-Eucera­ therium group in the McKittrick fauna lends strength to the belief that a fauna! difference exists between the McKittrick and Rancho La Brea stages of the Pleistocene which cannot be wholly accounted for by a geographic sel?aration of the deposits. The occurrence of a member of this group and of a llama1 (L(fJma stevensi) at McKittrick 1 Merriam, J. C., and Stock, C., Carnegie Institution of Washington, Publi­ cation 347, pp. 37-42, 1925. 410 University of California Publications in Geological Sciences [Vol.16 1927] Stock-Furlong: PreJ and the absence of these mammals at Rancho La Brea strongly suggest to the long diameter is gr that similar environmental conditions did not prevail at the two right side of the skull th« localities and may furnish evidence in support of the view that the from the side of the crani two faunas were not contemporaneous. A solution of the problem of belonging to the outer ha time relationship of the two asphalt assemblages appears to possess ently belong to the right fundamental importance in any attempt to establish a faunal succes­ tions cannot now be conne sion for the Pleistocene of western North America. in the McKittrick skull. The illustrations have been prepared by Mr. John L. Ridgway while toward the outer enc of the Carnegie Institution of Washington. is marked by ridges and evidence on the lower pos1 of the horn cores approacl distinctly more so than in DESCRIPTION OF MATERIAL Pleistocene of Texas, anc PREPTOCERAS 7 cf. SINCLAIR! Furlong verse measurement taken Locality.-McKittrick Pleistocene asphalt deposits, U. C. loc. 7139. No. lower borders of the horr 27118, U. C. Mus. Pal. Vert. Coll. Euceratherium, and is co: Important differences The materials available include a fragmentary skull with incom­ have been generally re plete horn cores, complete cheek-tooth series of one side, and a nearly Euceratherium. In Prei complete ramus with incisors and canine of the lower dentition situated farther apart a· missing. The posterior cannon bones, astragalus, cubo-navicular and latter genus the horn cor phalangeal elements (no. 27119 Mus. Pal. U. C.) are presumably to a point, measured from be referred to the individual represented by the skull. posterior or upper surfac In no. 2711~, all the permanent premolars and molars are in back than in Preptocer~ function and M~ is only slightly worn. Judging from the state of the occiput, the upper b wear of the teeth, no. 27118 belonged to an older individual than those farther removed from th of Preptoceras represented by specimens nos. 8896 and 1109 U. C. in Preptooeras. In Pre Mus. Pal. Vert. Coll. from Samwel Cave, but was not so old as that from the skull than in represented by the type specimen of Euceratherium, no. 8751 U. C. specimen the horn core Mus. Pal. Vert. Coll. The individual from the McKittrick Pleistocene but becomes circular nci resembles in size Preptoceras sinclairi and is slightly larger than the anterior surface of the type of Euceratherium collinum, both from the Samwel Cave deposit. Preptoceras is flattened · Horn cores.-The horn cores in no. 27118 have a shape and curva­ In no. 27118 from :N. ture, in so far as these characters can be determined from the struc­ face of the proximal por tures preserved, like those in the type specimen of P. sinclairi. Some in no. 8896. The great1 resemblance is seen when the McKittrick form is compared with the the orbit reached by thE type of Euceratherium. The horn cores are certainly much stouter in its backward and ou than those of the type of Euceratherium, no. 8751, in which respect that in Euceratherium. they are like those in Preptoceras. At the base of these structures than in the latter genu: the long diameter ( anteroposterior) through the core is close to that removed from the orbit in the type of Preptoceras, no. 8896, but the diameter taken normal : in Geological Sciences [Vol. 16 1927] Stock-Furlong: Preptoceras-Euceratheriwm from McKittrick 411 1cho La Brea strongly suggest to the long diameter is greater in the McKittrick specimen. On the did not prevail at the two right side of the skull the horn core extends approximately 90 mm. mpport of the view that the from the side of the cranium. Two separate sections of a horn core, A. solution of the problem of belonging to the outer half, are present in the collection and appar­ .emblages appears to possess ently belong to the right side of no. 27118. Unfortunately, the sec­ to establish a fauna! succes­ tions cannot now be connected with the basal portion of the horn core in the McKittrick skull. The horn core is :flattened near the base h America. ' d by Mr. John L. Ridgway while toward the outer end it has a circular cross-section. The surface ton. is marked by ridges and vascular canals, which are particularly in evidence on the lower posterior and anterior sides. The basal portions of the horn cores approach each other more closely than in P. sinclairi, distinctly more so than in Preptoceras mayfieldi from the Rock Creek iA.TERIA.L Pleistocene of Texas, and less so than in Euceratherium. A. trans­ LAIR! Furlong verse measurement taken across the frontals and between the outer lower borders of the horn cores is much greater in no. 27118 than in deposits, U. C. loe. 7139. No. Euceratherium, and is comparable to that in P.
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