KUNGL. SV. VET. AKADEMIENS HANDLINGAR. BAND 51. N:o 3. | 
The Australian specimens of Cladophlebis australis are stated to occur in Middle 
Jurassic beds. Is should be noted, however, that the age of the Australian plant- 
bearing deposits is not definitely settled, but that they may include horizons of 
rather different age. Polypodium Hochstetteri UNG. from New Zealand and Clado- 
phlebis denticulata forma Atherstonet SEW., which have been compared above with 
the present species, are derived from beds which are considered to be of Wealden age. 
Cladophlebis australis was found only in locality c at Rio Fösiles. 
Cladophlebis cf. Browniana (DUNK.) SEw. 
Pl. 4, figs. 1—5, figs. 6, 7? 
Pecopteris Browniana DUNKER 1846, p. 5; pl. 8, fig. 7 
polymorpha DUNKER 1846, p. 6; pl. 7, fig. 5. 
Ungeri DUNKER 1846, p. 6; pl. 9, fig. 10. 
» Dunkeri SCHIMPER 1869, p. 539. 
Cladophlebis Browniana SEWARD 1894, p. 99. 
» Dunkeri SEWARD 1894, p. 100. 
» Brownmiana SEWARD 1903, p. 10; pl. 2, figs. 1—4, 6 
» Ungeri WARD. 1905, p. 228; pl. 65, figs. 15, 16. 
The specimens in pl. 4, figs. 1—5, though too fragmentary for definite identi- 
fication, are in all probability identical with the form described by DUNKER as 
Pecopteris polymorpha and recently united by SEWARD with Pecopteris Browniana 
DUNE. 
The specimens represent the upper portions of small pinnae, not more than 
1,5 cm. broad and usually less. In the typical specimens shown in pl. 4, figs. 1—5, 
the pinnules are linear and are directed obliquely forward, very slightly or hardly 
faleate. They are more or less deeply lobed, each lobe having a long convex posterior 
and a shorter and straighter anterior edge, thus becoming bent somewhat forward. 
The venation is of the Cladophlebis-type; the secondary veins are simple, or more 
often they bifurcate once, both branches passing to one and the same lobe (pl. 4, 
figs. 4, 5). 
In spite of the fragmentary nature of the material, the identity of these speci- 
mens with DUNKERS Pecopteris polymorpha appears very probable. The smaller 
fragments in DUNKERS pl. 7, fig. 5, in particular, are indistinguishable from the 
Patagonian specimens. NSCHIMPER substituted in 1869 the name P. Dunkeri for that 
of P. polymorpha, the latter name having been used before in a different sense. Of 
the specimens figured two years later by ScHENK (1871) as P. Dunker, those in pl. 
31, fig. 1, resemble greatly those from Patagonia but, like the latter, are very frag- 
mentary. SCHENK stated that Pecopteris Ungeri DUNK. was identical with P. Dunkeri 
SCHIMP. (P. polymorpha DUNK.), but he did not substitute the former name for the 
latter as, according to present rules of nomenclature, should have been done. The 
restoration of the name Ungeri for both forms was not actually undertaken till 
1905, by WaARrbp, after the species had already been placed in the genus Cladophlebis 
by SEWARD (1894). 
