212 Dr. H. Woodward — Trilobites from Shantung, N. China. 



To this I propose presently to add a note on the Trilobites and 

 upon some additional specimens collected by the Rev. S. Couling, 

 and to give a photographic reproduction of a part of the slab sent to 

 me by him. All the specimens (including the slab) have, by his 

 desire, been presented to the Geological Department of the British 

 Museum (Natural History), Cromwell Road, S.W. 



The following is an abstract of Herr H. Monke's paper, entitled: — 

 "Contributions to the Geology of Shantung. — I. Upper Cambrian 

 Trilobites from Yen-tsy-yai." ^ 



The ' Sinische Formationsreihe ' (Sinic formation), as it is called 

 by Von Richtbofen,- is a series of strata of from 4000-7000 metres- 

 in thickness, composed of conglomerates, sandstones, clay-slates, and 

 limestones, which in Northern China covers the steeply inclined 

 folds of the Archaean formation, and which in turn is covered almost 

 conformably by the Carboniferous formation. The lowest membei'S 

 of this series consist of conglomerates and coarse sandstones, the 

 products of disintegration by the sea, transgressing from S.E. to N.W. 

 These are succeeded in ascending order by an alternating succession 

 of siliceous limestones with arenaceous or argillaceous strata, and 

 finally by pure limestones, partly of a peculiar, globulitic form. 

 Accordingly, we may distinguish between a Lower Sinic arenaceous, 

 a Middle Sinic arenaceo-calcareous, and an Upper Sinic calcareous 

 division. Von Richtbofen regards this series of strata as belonging 

 on the whole to the Cambrian, but he is of opinion that " the 

 formation in China extends much lower down and therefore embraces 

 a much longer period, whilst upwards it may extend into the Lower 

 Silurian without any appreciable break." ^ 



[p. 104] This view rests on the results at which Dames and 

 Kayser^ had arrived from the study of numerous Trilobites and 

 some Brachiopoda collected by Von Richtbofen in the Upper Sinic 

 Limestones near Sai-ma-ki, Ta-ling, and Wu-lo-pu, in Liautung.* 

 According to Dames, who worked out the Trilobites, the fauna of 

 Sai-ma-ki consists chiefly of two species of the genus Conocephalus, 

 whereas the genera Anomocare (3 species), Liostracus (1 sp.), and 

 Agnostus (1 sp.) occur only quite isolated. Near Ta-ling the lime- 

 stones, which here are partly globulitic, contain, with the exception 

 of Agnostus, the same genera (4 Conocephalus, 2 Anomocare, 2 Lio- 

 stracus), the species being, however, different, with the exception of 

 Conocephalus frequens,'^ which is the most common of all in both 

 localities. Dames therefore considers the two faunas as essentially 



1 Extracted from the Jahrbuch cl. kcin. Preuss. Geolog. Laudesanstalt und Berg- 

 akademie for the year 1902, vol. xxiii, fasc. 1, pp. 103-151, Tafel iii-ix (Berlin, 1903). 



« " China," vol. ii (1882). See especially pp. 73, 79, 1C7, 223, 316. 



3 Op. cit., p. 108. 



1 "China," vol. iv (1883). 



5 These three localities are situated near the Corean frontier : Ta-ling about 

 51 kilometres north of Sai-ma-ki, and Wu-lo-pu about 62 kilom. north-west of 

 Sai-ma-ki, or 28 kilom. west of Ta-ling. 



* The assumption on p. 17 (op. cit.) that Anomocare planum occiu's likewise near 

 Sai-ma-ki is, according to pp. 28 and 30, apparently a mistake. 



