572 MESOZOIC FLORAS OF UNITED STATES. 



FOSSll PLAXTS FROM BKOAD CKEEK. 



[PI. LXXX, No. 2.] 



The rock material from Broad Creek is a dark porous muck made 

 up chiefly of comminuted vegetable matter. On the labels the age is 

 given as Patuxent. The collection- was made by Mr. Bibbins for the 

 Maryland Geological Survey in September, 1896. The plants are very 

 imperfectly preserved, from long exposure. The number of determina- 

 ble specimens is small. The following species are found here: 



Abietites angusticarpus Font. ? -- 1 specimen. 



Cladophlebis Browniana (Dunk.) Sew. ? 1 specimen. 



Cladophlebis distans Font 1 specimen. 



These plants all come in the Virginia Potomac in the Rappahan- 

 nock and James River series. They are insufficient to prove the age 

 of the beds containing them, but their evidence, such as it is, indicates 

 that the strata at Broad Creek are of the same age and hence agree 

 with those of Springfield. 



A specimen of indurated white grit rock, given on the label as com- 

 ing from "Wanna's Broad Creek clay," "base of the Potomac," shows 

 nothing determinable. 



FOSSIL PLAMS FROM PLUM CREEK. 



[PL LXXX, No. 16.] 



A massive ferruginous sandstone from Plum Creek, Cecil County, 

 Patapsco ? foraiation, gives some vegetable remains that are not 

 determinable. 



FOSSIL PLASTS FR03I MIIDDV CREEK. 



[PL LXXX, No. 15.] 



Araucarites viRGiNicrs Fontaine. 



PL CXIX, Fig. 8. 



1889. Araucarites virginicus Font.: Potomac Flora (Monogr. U. S. GeoL Surv., 

 Vol. XV), p. 263, pi. cxxxiv, fig. 7. 



Muddy Creek, Cecil Countj^, yields a single specimen. It is an 

 imprint made by a portion of a cone that was once embedded in ash-gray 

 shale but has since fallen out. It is imperfectly preserved and is probably 

 a cone of Araucarites virginicus. As this fossil, in the Virginia Potomac, 



