60 NEW YORK STATE MUSEUM 
considerable distance from both the tip and the petiole, probably near 
the middle of the frond, for two of the primary division measure, 
the one 15 inches, the other which is not fully preserved 12 inches. 
The impression of the main rachis, at its widest part, measures 
three-eights of an inch across, the primary divisions one-eighth to 
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Fig. 2 Slab showing the strap-like, radiating rootlets of Eospermatopteris. 
(Slightly reduced) 
three-sixteenths of an inch. The impression of another main rachis 
measures 30 inches and apparently not half of the total length is 
shown (see plate 9). The impression of this main rachis is between 
one-half and five-eighths of an inch in width; of its primary divisions 
about three-sixteenths of an inch. Both the primary and secondary 
