CEETAOEOUS PERIOD. 169 



CHAPTER IX. 



CRETACEOUS PERIOD. 



MOLLUSCA. 



MOLLUSCOIDEA. 



Class BRACHIOPODA. 



Order LYOPOMATA. 

 Family LINGULIDiE. 



Genus LINGULA Brugiiiere, 1792. 



Lingula subspatula Hall and Meek, 



Plate XV, fig. 4 a. 



Lingula subspatula Hall and Meek, 185G, Mem. Anier. Acad. Arts & Sci., new series, v, 

 380. 



Shell of oi'dinaiy size, somewhat oblong or semi-elliptical ; postero- 

 lateral margins gently convex to the posterior margin ; lateral and antero- 

 lateral margins nearly straight or only slightly curved, so that the shell is 

 naiTowed a little toward the front ; front margin snhtruncate. Sm-face 

 marked by fine concentric striae and occasional gentle undulations. 



Position and locality. — The type-specimens of the species were obtained 

 by Hall and Meek from Cretaceovis strata at " Red Cedar Island, thirty- 

 five miles below Fort PieiTe." Those contained in the collections from which 

 the foregoing description was drawn were obtained from strata of the same 

 period, ten miles southeast of old Fort Wingate, New Mexico. 



