STRATIGRAPHY AND TRILOBITE FAUNAS FROM THE CAMBRIAN BURJ FORMATION 



145 



other figured specimens (Egorova etal. 1976: pi. 23, fig. 1 1, pi. 25, 

 fig. 1). Granulate sculpture is not seen in the holotype but is shown 

 by Egorova et al. ( 1976: pi. 28, fig. 1 ). 



Pahieolenus tchernyshevae (Bognibova in Chernysheva 1971: pi. 

 7, figs 6, 7, 9-12) differs from P. antiquus in having a narrower 

 border and lacking a preglabellar field, so that the glabella occupies 

 well over 90% of the cranidial length. The pygidia assigned to the 

 two species are much alike. 



Among species described from China the most similar is 

 Palaeolemis fengyangensis Chu, 1962, which has an expanded 

 glabella and divergent preocular sections of the facial suture, and has 

 been referred to Megapalaeolenus. Figured material (Chu 1962; 

 Zhang et al. 1980: pi. 72, figs 6-8) is of smaller cranidia than our 

 material, but the glabella appears proportionately wider, there is a 

 small occipital node and the preocular sutures are less divergent; the 

 surface is not recorded as granulose. 



HORIZON. Palaeolemis antiquus is recorded from the antiquus 

 Zone at the base of the Amgan Stage in sections on the rivers Lena 

 and Amga in eastern Siberia, and extends into the base of the 

 overlying Kounamkites Zone (Egorova et al. 1976. table, p. 14); it 

 occurs in carbonate deposits, in contrast to such species as 5. 

 amzassensis Fedjanina and S. impressus Fedjanina (both in 

 Chernysheva 1971), which are recorded from clastic deposits 

 (Chernysheva 1971: table, column 1). Species retained in 

 Schistocephalus (S. enigmaticus, S. juvenis) are recorded from 

 higher horizons (Chernysheva 1971). 



ACKNOWLEDGEMENTS Powell thanks the Director-General of the Natural 

 Resources Authority (N.R.A.), Jordan, and the staff of the Geology Directo- 

 rate, N.R.A., for their support during his involvement with the National 

 1:50,000 scale Geological Mapping Project. He also acknowledges funding 

 from the Overseas Development Administration (O.D.A.) during his time in 

 Jordan. We thank Mr I. J. Andrews (B.G.S.) and Dr S. G. Molyneux whose 

 critical readings much improved the typescript; Dr G. Geyer for discussion 

 and Ms Claire Mellish (Natural History Museum) for technical assistance. 

 The photographs were taken by H. J. Evans and H. Taylor, and Prof. W. T. 

 Dean kindly supplied the original prints of Figs 21 and 22. Powell publishes 

 by permission of the Director, British Geological Survey (N.E.R.C). 



REFERENCES 



Amireh, B. S., Schneider, W. & Abed, A. M. 1994. Evolving fluvial-transitional- 

 marine deposition through the Cambrian sequence of Jordan. Sedimentary Geology, 

 Amsterdam. 89: 65-90. 



Andrews, I. J. 1991. Palaeozoic lithostratigraphy in the subsurface of Jordan. Subsur- 

 face Geology Bulletin, no. 2, Geology Directorate, Natural Resources Authority. 

 Amman. 75 pp. 



Bender, F. 1 968. Geological Map of Jordan. Scale 1 :250 000 in five sheets. Geological 

 Survey of the Federal Republic of Germany. Hannover. 



1974. Geology of Jordan. Contribution to the Regional Geology of the World. 196 



pp. Borntraeger. Stuttgart. Berlin (originally published as Geologic von Jordanien. 

 1968, Borntraeger. Stuttgart). 



Best, J. A., Barazangi, M„ Al-Saad, D„ Sawaf, T. & Gebran, A. 1993. Continental 

 margin evolution of the Northern Arabian Platform in Syria. Bulletin of the American 

 Association of Petroleum Geologists, Chicago, 77: 173-293. 



Blanckenhorn, M. 1912. Naturwissenschaftliche studien am Toten Meet und im 



Jordantal. 478 pp. Friedlander, Berlin. 

 1914. Synen. Arabien und Mesopotamien. Handhuch der Rcgionalen Geologic 



5(4). 159 pp. Heidelberg. 

 Burdon, D. J. 1959. Handbook of the Geology of Jordan: to accompany and explain 



1:250 000 Geological Map of Jordan east of the Rift by A. M. Quennell. 82 pp. 



Government of the Hashemite Kingdom of Jordan. Colchester. 

 Chang Wen-Tang. 1966. (On the classification of the Redlichiacea, with description of 



new families and new genera). Acta Palaeontologica Sinica. Beijing, 14: 135-184 



(in Chinese). 

 Chernysheva, N. E. 1956. Paradoxididae, In, (Materials of palaeontology. New 



families and genera). Trudy Vsesoyuzniy Nauchno-lssledovatelyskiy Geologichiy 



Institut (VSEGEI), Moscow, New series 12: 147-150, pi. 30 (in Russian). 

 (editor). 1971. (The Amga Stage of the Altai-Sayan region). Trudy Sibirskiy 



Nauchno-Issledovatelskiy Institut Geologii. Geofiziki i Mineralyogo Syrya 



(SN11GG1MS), Novosibirsk. Ill: 267 pp., 25 pis (in Russian). 

 Chu Chao-ling. 1962. On the occurrence of Palaeolemis in Fengyang. Anhwei. Acta 



Palaeontologica Sinica, Beijing. 10: 386-391. 1 pi. (in Chinese and English). 

 Cobbold, E. S. 1935. Lower Cambrian faunas from He'rault, France. Annals and 



Magazine of Natural History. London. Series 10, 16: 25^t8, pis 2-A. 

 Cooper, G. A. 1976. Lower Cambrian brachiopods from the Rift Valley (Israel and 



Jordan). Journal of Paleontology, Tulsa, 50: 269-289. 

 Dean, W. T. & Ozgiil, N. 1994. Cambrian rocks and faunas, Hhdai area. Taurus 



mountains, southwestern Turkey. Bulletin de I 'Institut Royal des Sciences Naturellcs 



de Belgique. Sciences de la Terre, Brussels, 64: 5-20. 

 Egorova, L. N., Shabanov, Yu. Ya., Rozanov, A. Yu„ Savistski, V. E., Chernysheva, 



N. E. & Shishkin, B. B. 1976. (Elankan and Kuonaman fasciostratotypes of the 



Lower to Middle Cambrian boundary in Siberia). Trudy Sibirskiy Nauchno- 

 Issledovatelskiy Institut Geologii. Geofiziki i Mineralyogo Syrya (SNIIGGIMS), 



Moscow, 211: 167 pp., 59 pis (in Russian). 

 Freund, R„ Garfunkel, Z„ Zak, I„ Goldberg, M„ Weissbrod, T. & Derin, B. 1970 



The shear along the Dead Sea rift. Philosophical Transactions of the Royal Society 



of London, A267: 1 07- 1 30. 

 Geyer, G. 1990a. Revised Lower to lower Middle Cambrian biostratigraphy of Mo- 

 rocco. Newsletters on Stratigraphy, Stuttgart. 22: 53-70. 

 1990b. Die marokkanischenEUipsocephalidae(Trilobita:Redlichiida)./?fn/!,i,'i'n(/. 



Wurzburg, 3: 363 pp. 

 & Elicki, O. 1 995. The Lower Cambrian trilobites from the Gorlitz Synclinorium 



(Germany) - review and new results. Palaontologische Zeitschrift, Stuttgart. 69: 87- 



119. 

 & Palmer, A. R. 1995. Neltneriidae and Holmiidae (Trilobita) from Morocco and 



the problem of Early Cambrian intercontinental correlation. Journal of Paleontology, 



Tulsa. 69: 459^74. 

 Hull, E. 1886. Memoirs of the geology and geography of Palestine. Survey of western 



Palestine. London. 

 Hupe, P. 1953. Contribution a l'etude du Cambrien infe'rieur et du Precambrien III de 



I'Anti-Atlas marocain. Notes et Me'moires de la Service Geologique du Maroc, 



Bagnolet, 103: 1^402. 

 1 960. Sur le Cambrien infe'rieur du Maroc. Report of the twenty-first session of the 



International Geological Congress. Part VIII (Proceedings of section 8), Copenha- 

 gen: 75-85. 

 Ibrahim, K. M. & McCourt, J. W. 1995. Neoproterozoic granitic magmatism and 



tectonic evolution of the northern Arabian Shield: evidence from southwest Jordan. 



Journal of African Earth Sciences, Oxford. 20: 103-1 18. 

 Keegan, J. B„ Rasul, S. M. & Shaheen, Y. 1990. Palynostratigraphy of the Lower 



Palaeozoic. Cambrian to Silurian, sediments of the Hashemite Kingdom of Jordan. 



Review of 'Paleobotany and Palynology. Amsterdam. 66: 167-180. 

 King, W. B. R. 1923. Cambrian fossils from the Dead Sea. Geological Magazine, 



London. 60: 507-514. 

 Kobayashi, T. 1 935. The Cambro-Ordovician formations and faunas of South Chosen. 



Palaeontology. Part III. Journal of the Faculty of Science. Imperial University of 



Tokyo, Tokyo, Section II. 4: 49-344, pis 1-24. 

 Linan, E. & Gamez-Vintaned, J. A. 1993. Lower Cambrian palaeogeography of the 



Iberian Peninsula and its relations with some neighbouring European areas. Bulletin 



de la Socie'te giologique de France, Paris, 164: 831-842. 

 , Perejon, A. & Sdzuy, K. 1993. The Lower-Middle Cambrian stages and 



stratotypes from the Iberian Peninsula: a revision. Geological Magazine. Cam- 

 bridge. 130: 817-833. 



Figs 29-38 Palaeolenus antiquus (Chernysheva). Wadi Zarqa Ma'in. 29a-c, top, front and side views of exfoliated cranidium, showing parafrontal band. 

 It. 262 14, x 4. 30-32, small cranidia showing external surface, x 4; 30, It. 26222; 31, It. 2622 1; 32a, b, top and side views of It. 262 16. 33, pygidium. 

 It. 26228, x 6. 34a, b. latex cast of external mould, oblique and top views, It.262 1 7, x 4. 35. fragmentary cranidium showing sculpture of tixigena. 

 It.26218, x 4. 36, small librigena, It.26226, x 5. 37, fragment of large cranidium. showing glabellar furrows; the internal mould is finely pitted. 11.26215. 

 x 4. 38, fragment of cranidium, showing palpebral lobes and postocular facial suture. It. 26220. x 4. 



