FOSSILS OF THE RHJETIC BEDS. 
367 
borhood of Axmouth in Devonshire, and in the cliffs of West- 
buiy-on-Severu, as well as at Aust and other places on the 
Fig. 303. 
Cardium rhceticum, 
Merrian. Natural 
size. Rhaetic Beds. 
Fig. 384. 
Pecten Valoniensis. Ffr. 
^ uat. size. Portrush, 
Ireland, etc. Rhaetic 
Beds. 
Fig. 385. 
Avicula contorta. Portlock. 
Portrush, Ireland, etc. 
Nat. size. Rhaetic Beds. 
borders of the Bristol Channel. It abounds in the remains 
of saurians and fish, and was formerly classed as the lowest 
bed of the Lias; but Sir P. Egerton first pointed out, in 1841, 
that it should be referred to the Upper Xew Red Sandstone, 
because it contained an assemblage of fossil fish which are 
either peculiar to this stratum, or belong to species well- 
known in the Muschelkalk of Germany. These fish belong 
to the genera Acrodits, Hyhodus^ Gyrolepis^ and Saurichthys. 
Among those common to the English bone-bred and the 
Muschelkalk of Germany are Hybodus plicatilis (Fig. 386), 
Fig. 3SG. Fig. 38T. Fig. 388. 
H]ihodusplica'ih’s, Agass. Saurichthys apicalis, Agass. Gyrolepis tenuistriatus. 
Teeth. Boue-bed,Aust Tooth; natural size and Agass. Scale; nat. 
and Axmouth. magnified. Axmouth. size and magnified. 
Axmouth. 
Saurichthys apicalis (Fig. 387), Gyrolepis tenuistriatus (Fig. 
388), and G, Alhertii. Remains of saurians. Plesiosaurus 
among others, have also been found in the bone-bed, and 
plates of an Encrinus, It may be questioned whether some 
of those fossils which have the most Triassic character may 
