VERTEBRATA PALASIATICA

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1 1) VERTEBRATA PALASIATICA pp fig ,2 1,3 ( ) ( ) ( ) :,, : Q : A : (2004) , 1999, Coni2 codontosaurus qinlingensis sp. nov. Eumeces sp. Eremias sp., (,2004) 2), ka B. P. 2 Lacertilia Owen, 1841( 1842) Fam. Indet. Conicodontosaurus Gilmore, 1943 Conicodontosaurus qinlingensis sp. nov. ( 1, 1 2), ( NWUV1142, ), ( ka B. P. ) qinling,,,, 13,,, 5, 5 6,, 5 1) ( : J K028) 2),2004.., :

2 ( 1,1 2), mm, ( ) mm, ( 3 4 ),, S, 5,, 2, 6,, ; 10, mm, , 4,,,, 5, 1. 0 mm, mm ; ( 6 13 ),, mm, ( ) mm ; mm, 0. 5 mm 5 6 Conicodontosaurus Gilmore (1943), Agamidae, (1973) C. kanhsienensis,,,, 3,,,,, ;, Gilmore (1943), Conicodontosaurus Agamidae, Estes (1983), Agamidae, Lacertilia Eumeces sp. ( 1, 3 6) ( NWUV1140), (NWUV1141) ( 1, 3 4), mm, 4,, 13, 6,,, ;,,,, ( 4 ) mm, mm mm( 6 ) ( 1, 5 6), 7. 8 mm, ( ) mm, ( ) 1 mm,, 4 ;,, 2,, 21,

3 2 : 173

4 174 42, 26, , 7 mm, ( 12 ) mm, mm, 1/ 4,,,, E. xanthi Leiolopisma tsinlingensis (,1999),, 25 30, 15 mm,, Eumeces E. obsoletus (Q) E. striatulus (N 2 ) E. hixonorun (N 2 ) E. miobsoletus (N 1 ) E. antiquus (N 1 ) (Twente, 1952 ; Etheridge, 1958, 1960 ; Holman, 1981), E. xanthi,, Eumeces sp. Eremias sp. ( 1, 7 8) ( 3. 0 mm) (NWUV1139), , 2,,, 1. 0 mm, 2/ 3, 1/ 3, Eremias (,2003) E. argus E. multiocellata E. brenchltyi,,, ; 22 23, 8 10 mm, ; E. argus argus (,1999), (,1999 ;,1999), (1934) Lacertidae, ( Eremias argus Pe2 ters) ( ) :,

5 2 : Conicodontosaurus qinlin2 gensis sp. nov. Eumeces sp. Eremias sp. Tinosaurus luonanensis (,2002),, ka B. P.,,,,,, FOSSIL L IZARDS OF QINL ING MOUNTAINS LI Yong2Xiang 1 XUE Xiang2Xu 1,2 LIU Hu2Jun 1,3 (1 Department of Geology, Key Laboratory of Continental Dynamics of Ministry of Education, PRC, Institute of Cenozoic Geology and Environment, Northwest University Xi an ) (2 Institute of Earth Environment, State Key Laboratory of Loess and Quaternary Geology, Chinese Academy of Sciences, Xi an ) (3 College of Tourism and Environmental Science, Shaanxi Normal University Xi an ) Key words Luonan, Shaanxi, Quaternary, fossil lizards Summary The present paper reports three lizard fossils from the Middle Pleistocene ( ka B. P. ) Qinling caves in Luonan County, Shaanxi, China. Two lacertids reported here, Eumeces sp. ( Fig. 1, 3 6) and Eremias sp. (Fig. 1, 7 8) document the geologically first record of the fossil genus from China, and suggested that they are ancestors of modern genus and species in this area. The specimen of Conicodontosaurus is documented a new species : Conicodontosaurus qinlingensis sp. nov. (Fig. 1, 1 2). Lacertilia Owen, 1841( 1842) Fam. Indet. Conicodontosaurus Gilmore, 1943 Conicodontosaurus qinlingensis sp. nov. (Fig. 1, 1 2) Holotype Right dentary, NWUV No other material. Etymology Named after Qinling Mountains, where the new species is discovered. Locality and age Zhangping of Luonan County, Shaanxi Province ; Quaternary (Middle Pleistocene, ka B. P. ).

6 Diagnosis A small adult Conicodontosaurus (tooth row mm long) with the dentary hav2 ing 13 smooth teeth without tumor, their long and up to ward curved dentary other than short and deep in other species of the genus. The Macklin canal is open below the posterior border of the 5th tooth. Description In lingual view, the Meckelian canal appeared as a slender rift under the 5th tooth in internal, then open gradually. The dentary have a tooth2alveolar count of 13, maybe which is the complete tooth row. The 4th tooth is missing. The empty place between teeth 5th and 6th is spaced one tooth base. The 4th and 5th are stronger than others among the row. Many of the teeth in the posterior half of the jaw have bad tips. The teeth are subacrodont, low2crowned, single cusp, conical and stout. The obtusely round teeth are just like Conicodontosaurus djadocbtaensis or C. kanhsienensis but no tumor with them. In labial view, the denary is long, robust, the anterior end slightly untoward and curved internally, with the teeth low2crowned. Two inferior neuroformens are opened from different directions. The first one is opened with a direction to front under the 6th tooth and the second one is opened with a direction to back under the 10th tooth. References Bien M N, On the fossil Pisces, Amphibia and Reptilia from Choukoutien Localities 1 and 3. Paleont Sin, Ser C, 10 (1) : Estes R, Sauria, Amphisbaena. In : M nchen P W ed. Encyclopedia of Paleoherpetology. Part 10A. New York & Stuttgart : Gustav Fischer Verlag Etheridge R, Pleistocene lizards from the Cragin Quarry Fauna of Meade County, Kansas. Copeia, (2) : Etheridge R, Additional notes on the lizards of the Cragin Quarry Fauna. Mich Acad, 45 : Gao K Q, Taxonmy and evolution of Late Cretaceous lizards (Rep. Squamata) from Western Canada. Bull Carnegie Mus Nat Hist, 33 : Gilmore C W, Fossil lizards of Mongolia. Bull Am Mus Nat Hist, 81(4) : Holman J A, A herpetofauna from an eastern extension of the Harrison Formation (early Miocene : Arikareean), Cherry Coun2 ty, Nebraska. J Vert Paleont, 1 (1) : Li Y X( ), Xue X X( ), The first appearance of Tinosaurus fossil in the Quaternary. Vert PalAsiat ( ), 40(1) : 34 41(in Chinese with English summary) Li Y X( ), Xue X X( ), Li X C( ) et al., Additional notes of the characteristics of some modern lizards. Acta Zool Sin( ), 49(4) : (in Chinese with English summary) Twente J W, Pliocene lizards from Kansas. Copeia, (2) : Young C C( ), On a Mesozoic lizard from Kanhsien, Kiangsi. Vert PalAsiat ( ), 11(1) : 44 45(in Chinese) Zhao E M( ), Zhao K T( ), Zhou K Y( ) et al., Fauna Sinica ( ), Reptilia Vol. 2. Squamata, Lacertilia. Beijing : Science Press (in Chinese) Zheng S W( ), Li B G( ), Systematic keys and distribution of the vertebrate animal in Northwest Area of China Xi an : Northwest Univ Press (in Chinese)

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