66 



DISTRIBUTION OF THE LOWER LIAS AMMONITES. 



A Table showing the stratigraphical distribution of the Ammonoida in the 

 Lower Lias zones of the British Islands. 



Families, Genera, and Species. 



2 

 o 



CS5 



o 



a 



s 



o 



a 



a 



"a 

 bo 



a 



Lower 



:::::: ::::::::::: ;***** ::::::*:::::: Bucklandi-zone. 



6 



i 



a 

 o 



N 

 "S 



3 

 H 



<3> 



a 

 o 



N 

 en 



3 



3 



O 



o 



N 



ai 



3 



O 



3 



(*> 



O 



o3 

 § 



N 



to 



1 

 o 



1 



Family — Aegocebatid^. 



Genus — Aegoceras. 



Aegoceras planorbis, Sow. 



* 

 * 



* 

 * 

 * 

 * 

 * 



* 

 * 

 * 



* 



* 

 * 

 * 

 * 

 * 



# 



• 

 * 



* 



* 



* 

 * 



* 

 * 

 * 

 * 

 * 

 * 



* 



* 



Johnstoni, Sow 



Liassicutn, (T Orhig 



ano'ulatum, Schloth 



catenatum, De la Heche 



tortile, (T Orbig 



Charmassei, (T Orbig 



Boucaultianuin, (T Orbig 



Birchii, Sow 



planicosta, Sow 



sagittariutn, Blake 



gagateum, Young ^ Sird 



subplanicosta, Opp 



Genus — Arietites. 

 Arietites Bucklandi, iSow 



bisulcatus, Brug 



multicostatus. Sow 



Conybeari, Sow 



rotiformis, Sow 



spiratissimus, Quenst 



obesulus, Blake = resurgens, Du- 

 mort .. 



Scipionianus, d' Orbig 



Sauzeanns, d^ Orbig 



Crossii, JVright 



semicostatus, Toung Sf Bird 



Turneri, Sow. 



Bonnardii, d^ Orbig 



stellaris, Sow 



obtusus, Sow 



raricostatus, Ziet 



Nodotianus, d'Orbig 



Family — ArcestidjE. 

 Genus — Amaltheus. 

 Amaltbeus oxynotus, Quenst 



Lymensis, Wright 



denotatus, Simpson 



impendens, ZoMM^ ^ 5«>c? 



Simpsoni, Bean 



Oppeli, Schlonb 





I 



I 



