ALBIAN FOSSILS DISCOVERED AT OKEFORD FITZPAIXE, 67 



occurring at Okeford Fitzpaine and the fortunate discovery at 

 the latter place of so characteristic an Ammonite as Acanthoceraa 

 mammillatum would appear to determine at once the accurate 

 zonal value of both sets of beds. Mr. Mansel-Pleydell (3), 

 in 1895, speaking of the distribution of the Gault in this part 

 of Dorset, states that " The Gault is exposed in a brickyard 

 at Sutton Waldon, West of Iwerne Minster, at Okeford Fitzpaine, 

 and at Ansty, north of Bingham's Melcombe, but it seldom contains 

 fossils. It can be traced westward as far as Batcombe and Wool- 

 combe near Evershot Station ; but there it is very thin, and no 

 trace of it has been met with in the extreme west of the county." 



Before submitting detailed particulars of the fossils, it may be 

 as well to recapitulate some of the facts connected with the 

 arrangement and constitution of the beds at the locality in question 

 which formed the subject of my previous paper. 



SECTION 

 In descending order 

 thus tabulated : 



AT OKEFORD FITZPAINE. 



the formations observed in a brick pit were 



Albian < 



Hnplites 



interrupt us 



ZONE. 



Acanthoceras 



mammillatum 



ZONE. 



? APTIAN ... 



KlMERIDGIAN 

 ? CORALLIAN 



Subsoil ... ... 



Yellow clay with chert 



Brown clay without chert 



Dark-grey coloured, micaceous, 

 and sandy clay with phospliatic 

 nodules ; fossil if erous in the 

 lower 4 feet ... 



Brown sandy rock, with fossils in 

 the upper part 



Argillaceous sandy beds, mica- 

 ceous, and of a brown, grey, 

 or yellowish colour; ferruginous 

 and oolitic ; siliceous pebbles 

 interspersed; fossiliferous 



Pure sand ... ... 



Stiff blue clay 



Sandy rock. 



Feet. 

 1 

 3 

 5 



15 



3 



or 10 



(3) " The Flora of Dorsetshire " with a sketch of the Topography, 

 River System, and Geology of the County, 1895, ed. 2, p. xxix. 



