LIFE-ZONES IN THE BRITISH CARBONIFEROUS KOCKS. 213 



One mile north of Hodder Bridge : — 



Seaumontia Egerto7iL Sjnriferina cristata? 



Ort/iis Michelini. Strop Iiom ana aitalotja. 



,, resiqnnaia. OrtJwtates crenistria. 



Produotus aouleatus. Spine of PaltBecMnui, 



„ margarltaccus. Fusidonomya Beohen. 



„ JimhHatus, Nuculana attenuata. 

 S2)irifer trigonalh. 



Branoh of river Hodder at Agden. West margin of Slieet 92. S.W. 

 of 1-inch Geological Survey : — 



Actinoocras (ligantenm. Chonctcg Lagness'inna. 



Goniatite too compressed to deter- JMclasma Jiastata. 



mine. Edmondia Maoooyi. 



Athyris amhigua. 



Stream running S.W. from Browsholm Hall. East of Sheet 91. 

 S.E. 1-inch Geological Survey, showing section of Pendleside Limestone 

 with flint bands : — 



Athgns amligna. GlypMoceras hldorsale. 

 Chonetes Laguussiana. „ hilingue. 



Spinfer glaher ? ,, calyx. 



Posidonomya PecJieri. „ Tericulatuni ? 



Aviciilopecteii jn'eetennis, Cf. Orthoceras ohtusa. 



Ctenodonta laviroHrh. PMllipsia Polleni. 

 Nutiulana aitenuata. 



The River Hodder lies about midway between the Carboniferous 

 Limestone inlier of Withgill and the Millstone Grit of Longridge Fell. 

 The Pendleside series are rapidly attenuating as they pass west. The 

 beds in the Hodder undoubtedly belong to that series, as is shown by the 

 occurrence of the typical Cephalopoda and Lamellibranchiata of the zone 

 in them. I have little doubt but that the bands of Limestone in the 

 Hodder represent the Pendleside Limestone of Pendle Hill. 



The Bishopton beds, Glamorganshire, consist of a series of black shales 

 with Glyphiocera^ hil'mgne, G. diadema, O. reticulatum, and Fosidoniella 

 hevi% overlying a series of light-coloured beds of decomposed chert with 

 several fossils, amongst which are 



AtJiyris amhigua. Prodvctns scmiretlculatus. 



(Jhonctes Laguesslana. Phynchonella pleurodon. 

 Pielaxma hastata, „ jivgnns, 



Sj)irifer glaher. ffriftithides Parhii. 



„ trigonalis. Pcncstella sp. 

 Ortkotetes crenistria. „ sp. 



Produotus luiigispinus. Posidoniclla larig. 



These light-coloured cherty beds probably represent the uppermost 

 beds of the Carboniferous Limestone series, or even passage beds between 

 this serins and the Pendleside beds. It is interesting to note the presence 

 of Posidoniella heins and Chonetes Lagiiessiana and the absence of 

 P. giganteus in them. 



Last year I examined the upper part of the Carboniferous Lipaestone 

 series of Weardale with Mr. Barker of Frosterley. 



