'^^m 



i. -^ 'J>' *^ 



.-- .^ ,^frxc 











■^W'Vf^'' 



f"?^*: 



Palaeaster lying within a valve of Grammysia. Both are casts and 



the aboral exposure of the starfish indicates that its oral surface 



was against the inner surface of the clam shell. 



Hamilton sandstone, Saugerties, N. \\ 



