JURASSIC AND LOWER CRETACEOUS OF WADl HAJAR 



NAIFA CLIFF 



Quaternary 



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PQ 



3ZI) 



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TTT . 



rrn 



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15 Pachysphinctes spp. indet. 

 2 Aspidoceras longispinum (J. de C. Sowerby) 



Taramelliceras sp. indet., 6 Lamellaptychus 

 Pachysphinctes bathyplocus (Waagen) 

 Pachysphinctes major Spath 

 Pachysphinctes maholfondobeyrichi (Dietrich) 

 Idoceras cf. hararinum Venzo 

 Aspidoceras longispinum (J. de C. Sowerby) 

 Aspidoceras or Orthaspidoceras sp. indet. 

 Simaspidoceras argobbae (Dacqu6), 7 Laevaptychus 

 Lithacoceras (L.) cf. ulmense (Oppel) 

 Lithacoceras (Subplanitesj mombassanum (Dacqu6) 



5 Orthaspidoceras gortanii IVenzo) 



1 Pachysphinctes bathyplocus (Waagen) 

 4 Simaspidoceras argobbae (Dacqu6) 

 1 Simaspidoceras iregulare (Dacqu6) 



7 Torquatisphinctes naifaensis sp. nov. 



1 Perisphinctid indet. 



•1 Crussoliceras cf. wegelei Enay 



Base of Billum Member not exposed 



Fig. 3 Vertical section of the Naifa Formation at Naifa Cliff on the southern (right) bank of the river 



