Devoman.l PALEONTOLOGY OF VICTORIA. [P/ante. 



Plate XXXVI., Figs. 3-5a. 

 SPHENOPTERIS (EREMOPTERIS) IGUANENSIS (McCoy). 



[Genus SPHENOPTERIS (Bronc). (Class Acotyledones ; sub-class Acrogcnse. Order 

 Filices. Fani. Sphenopteridaj.) 



Gen. Char. — Frond bi- or tri-pinnatifid or pinnate ; leaflets lobed, narrowed at the base ; 

 lo\yer lobes largest, diverging ; veins subradiating, subflexuous, pinnate, dichotomous, seeming 

 to radiate from the base ; midrib inconspicuous, imdulating. 



Siili-r/eniis Eremoptcris (Schimper). Frond dicholomously pinnate; pinnae irregularly 

 pinnatifid, laciniate ; lobes elongate, obovate or subcuneate ; veins dichotomously radiating from 

 base.] 



Description. — Dichotomously bi-pinnatifid ; segments of usually 5 to 7 lobes, 

 oblique elongate cuneate, confluent at base, the apices crenulato-lobate by small 

 acutely angular indentations ; veins slender, numerous, forked, diverging from the 

 base, usually about 3 to each lobe, a few towards the middle stronger than the rest, 

 but no distinct midrib. Rachis rather thick. Length of pinnules, 1 to 2 inches ; 

 greatest width, usually about 4 lines. 



The pinnules or lobes are smaller, narrower, diverge at a more 

 acute angle and much less deeply divided than in the Sphenopteris 

 artemesifolia (Brong.) of the Lower Carboniferous rocks of North- 

 umberland, to which it seems most nearly allied, and which is 

 the type of Schimper's exclusively Palaeozoic Eremopteris. 



Common in hard olive Upper Devonian flags of Iguana Creek. 



Explanation of Figures. 



Plate XXXVI.— Fig. 3, portion of pinna, natm-al size. Fig. 4, portion of pinna, showing 

 form of terminal divisions. Fig. 4a, portion of ditto magnified to show neuration. Fig. 5, more 

 divided pinna, natural size. Fig. 5a, ditto, magnified. 



Plate XXXVL, Figs. 6 and 7. 

 CORDAITES AUSTRALIS (McCoy). 



[Genus COKBAITES (Unger). (Affinities uncertain ; leaves like Dracana, but stem 

 structure of Zomatopliloi/os.) 



Gen. Char. — Stem cylindrical, having a bark marked with cicatrices of the caducous leaves 

 with a simple woody cylinder witli radiating scalariform vessels, but without medullary rays, and 

 l.irgc pilh with transverse lamella;. Leaves simple, sessile, very long, flat, parallel-sided, with 

 broad clasping base, easily disarticulated from stem ; surface with fine parallel neuration with- 

 out midrib. I)evonian and Carboniferous.] 



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