46 



THE 'DERIVED' FOSSILS. 



Cyrena rugosa, Sby. 



Area, or Macrodon. 



Pholadidea. 



Astarte 1 (a Portlandian species). 



cuneata, Sby. 

 Terebratula ovoides, Sby. 



,, var. rex, Lan- 



kester. 

 Serpula tricarinata, Sby. (attached 



to Belemnites explanatus, Phill.). 

 Column of Crinoid (Apiocrinus 1). 

 Milkricrinus 1 



Hemicidaris intermedia, Flem. 

 Pseudodiadema hemisphericum Ag. 

 Cidarisjlorigemma, Phill. 



Echinobrissus scutatus, Gmel. 

 Holectypus depretsus, Lam. 

 Gli/pticus hieroglyphicus, Goldf. 



Vertebrates : 



Sphcerodus gigas, Ag. 



Pycnodus. 



Gyrodus. 



StropJwdus. 



Hybodua. 



Asteracanthus. 



Plesiosaurus, several species. 



Plwsaurus, several species. 



Ichthyosaurus. 



Dakosaurus. 



IT. THE 'DERIVED' FOSSILS OF BRICKHILL. 

 Those marked with a star (*) are not known to me from Upware. 



Belemnites. 

 Ammonites biplex, Sby. 



the Ox- 



ford Clay variety. 

 Ammonites giganteus, Sby. ? 



Lamberli, Sby. 



Turbo, sp. (from the Kimmeridge 



clay). 

 Pleurotomaria reticulata, Sby. 



-_ > S PP" 



Aatwa. 



Chemnitzia. 



Aporrhais. 



Lima. 



Iceviuscula, Sby. ? 

 *Gervillia aviculoides, Sby. 

 Area, sp. 



concinna, Sby. 

 * Astarte Hartwdliensis, Sby. 



cuneata, Sby. (of the 

 Swindon series). 

 Astarte, sp. 

 *Myacites recurva, Phill. 



sp. 



Modiola (Portlandian, sp.). 

 * bipartita, Sby. 

 Cythercm. 



Thracia depressa, Sby. 

 Cardium striatulum, Sby. 

 Lucina, 

 Myacites. 



*Myoconcha Scemanni. 



Portlandica 1 Blake. 



Pholadomya Phillipsii, Morris. 



ovalis, Sby. 



Cyrena (Cythercea) rugosa, Sby. 



of the Purbeck Oolite. 

 Trigonia gibbosa, Sby. 

 incurva, Sby. 



S P- 

 Rhynchonella varians, var. sociale, 



Dav., of the Jurassic clays. 

 Rhynchonella, 2 sp. 

 Terebratula ovoides, Sby. 



Vertebrates, Fish : 



Asteracanthus. 



Sphenonchus. 



Pycnodus. 



Sphcerodus gigas, Ag. 



Edaphodon. 



Otodus ] vertebrae of. 



Reptiles : 



Dakosaurus. 

 Ichthyosaurus. 

 Pliosaurus. 

 Plesiosaurus. 



Fossil wood : 

 Silicified. 



