Smyth — Faunal Zones of Rush-Skerries Carhoniferous Section. 543 



The Campophylloid Caninia is a typical S form. 



Koninchophyllum aff. and Carcinophyllwn aff. (PI. XXXVI, fig. 5) are 



both less "advanced" than the typical forms from S2 and Di. 

 Produetus corrugato-hemisphericus becomes common near the top. 



Lane Conglomerate. 

 Tin f ossilif erous. 



Lane Limestone. 

 Corals ; — 



Cyathaxonia corint, Micsh. 

 Zaphrentis ambigua, Car. 



„ ,, „ var. a, common. 



,, omaliiisi, Edw. & H. 

 Amplexus coralloides, Sow. 

 Syringopora cf. reticulata, Goldf. 



,, cf. geniculatd, Phil. 



Brachiopods : — 



Produetus cf. sub-kevis, de Kon. (two spp.). 



„ sp. (fimbriate). 



„ sp. (semireticulate). 

 Chonetes cf. comoides, Sow. common. 

 Orthotetids (? two spp.) common. 

 Reticularia Uneata, Dav. 

 Spirifer attenuatus, Sow. ? 

 Schizophoria resupinnta. 

 Leptaena analoga. 



Lane Conglomeuate = C. 

 Lane Limestone = Ci 



APPROXIMATELY. 



Assuming that the Holmpatrick Limestone is of G S age [vide supra), the 

 Lane Conglomerate and Limestone must lie in C. Tlie former is unfossi- 

 liferous. The latter agrees with Ci of the S.W.P. in tlie abundance of 

 Chonetes cf. comoides, and large Euomphali. 



Produetus cf. sub-lcevis suggests C,. 



Abundance of Zaphrentis omaliusi and Z. ambigua suggests Ci or lower. 



Syringopora cf. reticulata appears to be the same as the form occurring in 

 the Rush Conglomerate group = Co (vide infra). 



SCIENT. PROO. E.D.S., VOL. XIV., NO. XLI. 4 S 



