•].\-p 



BRITISH GRAPTOLITES. 



1908 I" this Part the Historical Section is devoted to 



Elles and Wood, the Literature of Graptolite Research during- the period 



" Monograph of British 1895—1901. In the Descriptive Section the British forms 



Graptolites," pt. 7, of Diplograptidse assigned to the sub-genus, Petalograptus, 



Palseontographical and also thoge of tbe generaj Cri/ptograptus and Trigonoqraptus 



Society, 1908. , „ mi „ .. ' ." _.. ' '. 



are treated of. J lie family of the Glossograptidas is next 



taken up, then the Retiolitidre, and finally the Dimorphograptidas. 



A remarkable new form, Petalograptus (?) phylloides is provisionally assigned 

 to the Diplograptida?. Two previously named but undescribed sub-genera, 

 Hallograptus (Carruthers, MS.) and Neurograptus (Lap worth) are classed with 

 the Glossograptidas, together with two new sub-genera, Thysanograptus and 

 Nymphograptus, and Plegmatograptus is assigned to the Retiolitidae. The 

 new species described in this part include Petalograptus altissimus, I'. (?) 

 phylloides, Glossograptus acanthus, Nymphograptus velatus, and Plegmatograptus 

 nebula. 



A brilliant monograph dealing with the author's researches 

 into the lithological and paloeontological sequence in the 

 Silurian (Llandovery to Ludlow) of the classical Norwegian 

 district extending from Skien to the head of Lake 

 Mjosen. 



The work is illustrated by maps, plates, sections, abundant text-figures, 

 tables of zonal distribution, and a special chapter on correlation. Four 

 successive formations are recognised, parallel broadly with the British Lower 

 Llandovery. Upper Llandovery (inclusive of the Tarannon), Wenlock and Ludlow 

 respectively, the whole being divided into nineteen zones. In the palasontological 

 parts of the work, although the chief attention is naturally directed to the 

 extraordinarily prolific Brachiopod, Trilobite, and Coral faunas, the Graptolites 

 are by no means neglected, some twenty-six distinct species being recognised, and 

 their geographical and geological ranges in the districts described carefully 

 indicated. 



1908. 



Kiser, J., 



' Das Obersilur iiu 



Kristianiagebiete, 



Christiania,' pp. 1-595. 



1908. 



Hall, T. 8., 



" Graptolite Beds of 



Dalesford," 'Proc. Roy. 



Soe. Victoria,' vol. ii, 



pp. 271-284. 



1908. 

 Hall, T. S., 

 " Reports on Grapto- 

 lites," ' Records Geol. 

 Surv. Victoria,' vol. ii, 

 pp. 137-143, pi. xv. 



Lists of the Arenig Graptolites from some thirty-four 

 different Victorian localities. 



Lists of Graptolites collected from Victorian localities, 

 with figures and descriptions of two new species, Diplograptus 

 tardus and Didymograptus latus. 



