THE DESCRIPTION AND STRATIGRAPHIC RELATIONSHIPS. 425 



ate above and a little rounded at the apex of the nucleus; nucleus rather 

 narrowly oval, pointed abo\'e and marked by three comparatively large longi- 

 tudinal ridges; basal part of fruit destroj^ed so that its exact nature cannot 

 be determined. 



This fruit appears to belong to a group of large, broad-winged seeds rep- 

 resented by C. Girtyi,^* C. Newberryi, C. Baileyi and-' C. annulalum. It is 

 likely an undescribed species but owing to its poor state of preservation it 

 is not thought admissible to describe it as such. 



Loeahty : A single form was found at the Yoho School locality. 



Cardiocarpon rugosum n. sp. 

 PL VI, Fig. 1. 



Fruit slightly oval to nearlj^ round, 21 mm. long, 19 mm. ■wide, the great- 

 est width a little below the center; wings of uniform width of 2.5 mm. except 

 at the top where the width is about 3 mm; wings close together at apex of 

 nucleus, wath small emargination above; nucleus nearly round, a little pointed 

 at top, small depression at base which marks the attachment of pedicle; 

 smf ace of nucleus finely rugose. 



This species is rather close to C. annulalum but is smaller and has narrower 

 wings more nearly equal in width. It is also close to C. ovoidcum, but is 

 larger, ha.s wings of a more uniform width, and the nucleus is less acute above. 



Locality: Yoho School. 



Cardiocurpun ovoideum n. sp. 

 PL VI, fig. 2. 



Fruit of moderate size, slightly oval, 17-18 mm. long, 16-17 mm. wide; 

 nucleus almost round, extending upward, pointed at the top, slightly trun- 

 cate or depressed at the base; wing blunt, rounded and much emarginate at 

 apex, and shghtly rounded on either side of the micropyle, near which it 

 forms a border 3 mm. Avide, narrowing downward toward the base where it 

 is about 1.5 mm. in width; point of attachment of the pedicle faintly marked 

 by a rounded depression at the base of the nucleus. 



This species is probably related to C. ovatum and C. conglobulum'^' both 

 of which have been reported from the Pennsylvanian of Arkansas. It differs 

 from the former in that it is larger, more rounded and is more emarginate 

 and does not have wings of equal A\ndth. 



Locality: Yoho School. 



■-< Rep. Geol. Surv. Ohio, Vol. I. part II, p. 37:i. i)l. 43, figs. 9, 9a. 



For a discussion of apparently related forms see" Wliite's paper on the Stratigraphic 

 Succession of the Fossil Flora of the Pottsville Formation in the Southern Anthracite 

 Coal Fields of Pennsylvania, 20th An. Rep. U. S. G. S. Part II, p. 907. ., _ , 



=5 Stopes, M. C, :Memoir 41, Geol. Surv. Canad., 1914, "The Fern Ledges Carboni- 

 ferous Flora of St. John, N. B., p. 92, Text flg. 21. 



26 Geol. Surv. Ohio, Vol. I, p. 374, pi. 43, figs. 8-8a. 



2' Coal Flora, III, p. 810, PI. Cix., fig. 9,, 1884. 



