276 THE FOEAMINIFEEA 



of Miocene age, but there the Phocene strata are 

 mostly in evidence, containing an abundant foramini- 

 f eral fauna. A Hmestone of f oraminiferal origin, chiefly 

 consisting of Conulites, and doubtfully of Miocene age, 

 has lately been described from the neighbourhood of 

 Cairo (fig. 36). 



The Older Pliocene of Italy, as described by 

 Costa, Terrigi, Fornasini, and Egger, has a remark- 

 able fauna, and the interesting deposit of blue sandy 

 clay at St. Erth, Cornwall, as elucidated by Millett, 

 is in many respects comparable with those beds, 

 especially with the deposits at Bordighera. 



The Pliocene of England, in East Anglia, has 

 been productive of an extensive series of distinct forms, 

 both from the Ped and the Coralline Crags. 



The Tertiary clays of California are possibly 

 of Pliocene age, and also the richly fossiliferous 

 Glohigerina-iw^Yl^ of Barbados, although the latter 

 deposits have certain affinities with Miocene and 

 even Oligocene faunas. 



The f oraminiferal deposit of Wanganui, in Xew 

 Zealand, a green sandy shell-marl, also calls for 

 special note, on account of its richness in these 

 fossils. 



Up to the top of the Pliocene system the various 

 tertiary faunas, although represented for the main 

 part by species now living in various parts of the 

 ocean, are yet differentiated from the foraminiferal 

 facies still existing near those localities by the 

 infiuences which changes of climate and altera- 

 tion in the coast lines or the trend of the mud 



