ZONE OF AEGOCERAS ANGULATUM. 



29 



contributions to the history of the fauna of this zone in their valuable monograph, " Le 

 Lias inferieur de l'Est de la France." 1 The researches of MM. Tate and Blake in the 

 Yorkshire Lias have added much to our knowledge of the British fossils of the Angulatum- 

 beds near Redcar, as the following list shows. 



Fossils from the Angulatum-Zone. 

 Reptilia. 



Ichthyosaurus, vertebrae and teeth. Plesiosaurus, vertebrae and teeth. 



Hybodus minor, Agass. 



Aegoceras angulatum, Schl. 



— Johnstoni, Sow. 



— Liasicum, d'Orbigny. 



Discohelix striata, Piette. 



— semiclausa, Tate. 

 Pleurotomaria obesula, Tate. 



— similis, Sow. 



— tectaria, Tate. 



Pitonellus sordidus, Tate. 

 Cryptaenia solarioides, Sow. 



— rotellaeformis, Dunker. 



— nucleus, Terquem. 

 Cerithium gratum, Terquem. 



— Semele, d'Orbigny. 



— spiratum, Moore. 

 Dentalium Etalense, Terquem. 



Ostrea ungula, Miinster. 



— semiplicata, Miinster. 

 Gryphaea arcuata, Lamarck. 

 Anomia alpina, Winkler. 



— striatula, Oppel. 

 Plicatula Hasina, Terquem. 

 Pecten calvus, Goldfuss. 



— punctatissimus, Quenstedt. 



— textilis, Miinster. 



— textorius, Schlotheim. 



Pisces. 



Acrodus minimus, Agass. 



Cephalopoda. 



Aegoceras nanum, Mart. 

 Nautilus striatus, Sow. 

 Belemnites infundibulum, Phillips. 



Gasteropoda. 



Dentalium limatulum, Tate. 

 Actaeonina fragilis, Dunker. 

 Phasianella Morencyana, Piette. 

 Turbo solarium, Piette. 



— philemon, d'Orbigny. 

 Littorina semiornata, Miinsl. 

 Eucyclus elegans, Miinster. 



— acuminatus, Chap. Sf Dewal. 

 Turritella Dunkeri, Terquem. 

 Chemnitzia transversa, Blake. 



— Berthandi, Dunker. 



— unicingulata, Terquem. 



— Etalensis, Piette. 



Lamellibranchiata. 



Limea Blakeana, Tate. 

 Avicula Pattersoni, Tate. 

 Perna infraliasica, Quenstedt. 

 Pinna Hartmanni, Zieten. 

 Macrodon pullus, Terquem. 



— Hettangiensis, Terquem. 



— navicula, Terquem. 

 Leda Galathea, d'Orbigny. 



— Renevieri, Oppel. 



— texturata, Terquem. 



1 ' Memoires de la Societe Geologique de France,' 2e serie, tome viii, p. i, 1865. 



