56 Ammonoidea from Pondoland 



allied to the South African Mortoniceras soutoni, Bailey sp. and M. 

 woodsi, Spath, had been described from Tunis. Since then, through 

 the kindness of Mr. Beeby Thompson, the writer has been able to 

 examine a small collection of N ostoceratidce, [Didymoceras of the type 

 of D. nebraskense-cooperi (Meek) and D. hombyense (Whiteaves) ] 

 from the Barra do Dande, Angola, whence Choffat 1 had described an 

 Inoceramus of unknown age. This seems to be the first record of 

 Campanian Ammonoides from the West Coast of Africa; for Lang's 

 ' cornes d'Ammon' mentioned in 1839 2 apparently are lost, and 

 Welwitsch 3 later classed the rocks at Dande as " Muschelkalk." 



The writer, however, still believes that the great transgressing 

 Campanian Sea, that invaded the whole of Northern Africa, from 

 Senegal, via the Knee of the Niger, and Bilma in the Sudan, to 

 Egypt, reached the most Southern locality, Dande, in a separate arm 

 to the West, and that there was no marine connection between 

 Angola and South Africa and Madagascar in the East, via the Cape. 

 The Turonian and Coniacian faunas of Nigeria and the Cameroons 

 indicate that the Western Arm of the Thetys, down to Angola, 

 probably existed continuously from Albian times. 



1 Contrib. Connaiss. Geol. Col: Portug. d'Afr. II, Nouv. donnees s.l. z. 

 littorale d'Angola Comm. Seiv. Geol. Port. 1905, pp. 10 & 42, pi. i, fig. 1. 



2 "O petroleo do Dande, 1839." Apparently not published till 1886 (Bol. 

 Soc. Geogr. Lisboa. 6th ser. no. 4, pp. 240-9). 



3 " Quelq. Notes s.l. Geol. d' Angola, etc." Communicacoes, vol. ii, 1888. 



