THE DESCRIPTION AND STRATIGRAPHIC RELATIONSHIPS. 42-'J 



Cardiocarpon cuneaium n. sp. 

 Plate X, figs. 4, 6. 



Fruit about 1.2 centimeters long and 1 centimeter wide, the greatest 

 width a little below the middle, narrowly cordate; nucleous ovate to nearly 

 round, elongated and pointed above, slightly flattened or depressed at base 

 and marked by a line extending downward from the mieropyle nearly to the 

 base; wings about 1 mm. in width at base and increasing to about 2 mm. in 

 width at apex, slightly marginate. 



The smaller size, more acute nucleus, and emarginate wings distinguish 

 this species from C. miitus,^^ a form which it closely resembles. 



Locality: Fire clay under the Upper Block Coal, Asherville. 



Cardiocarpon gracile n. sp. 

 Plate X, fig. 5. 



Seed broadly oval in outline, slightly truncate at base, about 9 mm. long 

 and 7 mm. in width, the gi-eatest width a little below the center; nucleus 

 oval, slightly truncate at base, wedge shaped at apex; with line extending 

 downward from mieropyle to near the center; wings less than 1 mm. wide at 

 base, increasing to about 1.5 mm. at apex; very slightly emarginate. 



This species is doubtless closely related to C. cuneatum. It differs from 

 it principally in being smaller in size and in having a less sharply pointed 

 nucleus. 



Locality: Same as C. cuneaium. 



Cardiocarpon cordatum n. sp. 

 Plate X, fig. 10. 



Fruit ovate in outline, about 7.5 mm. long, 6 mm. wide, the gi'eatest 

 width a httle below the center; nucleus cordate in outline, pointed above, 

 marked by line extending from apex to depression in truncated base; wings 

 about .5 mm. wide at base and about 1.5 mm. Avide near the apex; verj^ faintly 

 emarginate. 



This species differs from ('. gracile in its smaller size and in that its nuc- 

 leus is more sharply pointed at the apex and more truncate at the base. It 

 may be distinguished brom C. irregulare by its larger size, wider wings and 

 nucleus not marked by a vertical line. A poorly preserved specimen shown 

 in PI. IX, fig. 10, is doubtfully referred to this species. 



Locality: Fire clay under the Upper Block Coal, Asherville. 



Cardiocarpon commune n. sp. 

 Plate X, figs. 11 and 15 

 Fruit very l)roadly oval to nearly round in outline, 6 mm. wide and 7 

 mm. long; nueleiis oval; wedge-shaped alcove, flattened below and marked 



" Geol. Surv. Ohio, Vol. I, Part II, p. ;i72, pi. 43, fig. 4, 1873. 



