DISTRIBUTION OF THE UPPER LIAS AMMONITES. 



163 



A Table showing the Stratigraphical Distribution of the Ammonoida in the Upper Lias 



of the British Islands. 



Families, Genera, and Species. 



Family — Lttoceratiu^. 



Genus — Lytoceras. 



Lytoceras cornucopiae, Young Sf Bird. 



hircinum, Schlilbler 



Jurense, Zieten 



torulosum, Schliibler 



Genus — Phyllocekas. 



Phylloceras heterophyllum, Sow 



subcarinatum. Young Sf Bird. 



Family — Aegoceratid^. 



Genus — Harpoceras. 



Harpoceras serpentinum, TJwiec^e 



elegans, Sow 



falciferum, Sow 



exaratum, Young ^ Bird 



Lythense, Young ^ Bird 



latescens, Simpson 



ovatum, Young Sf Bird 



subplanatum, Oppel , 



primordiale, Schlotheim, 



bifrnns, Brugui6re ^^A\coiU, Sow. 



Levisoni, Simpson 



ins'igne, Sch abler 



Comense, Fon Buck 



discoides, Zieten 



Tbouarsense, d' Orbig 



striatulum, Soio 



radians, Beinecke 



Raquinianum, d' Orbig 



undulatum, Stahl 



variabile, d' Orbig. =v&r. Beanii.... 



Aalense, Zieten 



opalinum, Beinecke 



Moorei, Lycett 



subinsigne, Oppel 



Genus — Stephanoceras. 



Stephanoeeras annulatum, Sow 



crassum, Young Sf Bird 



Holandrei, c?'0^62^ 



commune, Sow 



fibulatum, Sow 



subarmatum, Young Sf Bird. 



a 



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