19 



217 



The impressions and the few remains still existing show that the theca was thin, 

 smooth without costae, and without epithecum. 



As I was unable to find any special difïerence in the stone kernel shown in table III, 

 fig. 1 b, 5 and 6, I have grouped them all under one of the names. 



LocaUty: Danien. Coral chalk, Faxe, Limhamn. 



6. Ceratotrochus Saltholmensis, n. sp. 



Table I. Figs. 26—31. 



This species is a very small one. It attains a length of only 12 mm, with a diameter 

 at the calyx of 5 mm. It is regular in form, obovate-conical. There is no basic extension, 

 no stem, but sometimes a small adhesive disc appears at the point; if this is not the case the 

 point is smoothly rounded. 



The theca is quite thin, without epithecum. The costae in the primary cycles are rather 

 conspicuous, form no continuous ridge, but are scattered in rows of small prickles. 



The calyx is shallow with a prominent, rather broad columella filling about one third 

 of the diameter. 



There are between 32 and 36 septa in 1 incomplete and 3 complete cycles on 4 ordines 

 of which the 2 first are considerably developed and share in the formation of the columella. 

 The later series are but weakly developed. 



The septa do not protrude beyond the edge of the calyx, they soon bend their upper 

 edge down into the depths of the calyx, where, their edges uniting in the center, they form 

 a spongy pseudo-columella capable of considerable development (table I, fig. 29). The septal 

 edges seem to be entire. The lateral surfaces of the septa are covered with granulations, 

 often quite large, spinate, which greatly reduces the interseptal compartments. 



No dissepiments are found, but the interseptal compartments are unencumbered down 

 to the lowest parts of the coral. The inner edges and the columella are much thicker on the 

 lowest parts of the coral and some solid endothecal chalk deposit is visible, making these 

 lowest parts of the coral almost massive. It is not unusual to find specimens in which the 

 larger portions of the theca and septa are worn away and only the lowest part of the coral 

 with the thickened end of the columella preserved (table I, fig. 30). 



Locality: Danien: The species is well known from younger Danien; not known from 

 older Danien. Younger Danien: Frederiksholm, Saltholm, Bryozoa chalk from Faxe. Her- 

 følge, Ravnstrup, Copenhagen harbour. 



7. Ceratotrochus Milthersii, n. sp. 



Fig. 1-4. 



Among the most common fossils in the paleocene deposits near Randers is a coral 

 which only appears as a stone kernel with no impressions. Various cuts .showed the coral 

 to have about 30 septa which are contiguous in the center of the coral and form small spongy 

 columns. The interseptal compartments were free without dissepiments. At the lower end 



28* 



