12 
In Coniopteris hymenophylloides, however, we have a thoroughly Jurassic type. 
There is also a general absence of many of the common plants met with iti the Rhsetic 
of Mount Potts and the Clent Hills. I am therefore inclined to place the Malvern 
Hills beds low down in the Jurassic, though, were a more extensive flora known from 
them, this conclusion might well require revision. 
Age. —Lower Jurassic (?). 
F. The Jurassic Flora of Mokoia, near Gore, Southland. 
a 
Locality.— The late Mr. J. S. Nicol’s farm, Mokoia, lies four and a half miles 
south of Gore(l), on the left bank of the Mataura River, and about one and a quarter 
miles east of the river, between the towns of Gore and Mataura (see map, fig. 5). 
The Collections. —About ten years ago the late Mr. J. S. Nicol began to collect 
such specimens as could be obtained from time to time when fresh exposures were 
made on the farm, and on his death in 1914 his executors presented his collection 
to the Sedgwick Museum, Cambridge. No plant-remains have previously been recorded 
from this locality. The geology of the neighbourhood of Gore and Mataura was 
described by McKay(2) in 1881. 
Previous Opinion as to the Age of the Beds. —McKay(3) referred these beds to the 
Trias. Those on the east bank of the Mataura River opposite Gore he termed the 
Wairoa Series or Middle Trias, those on the same bank between Mataura and Gore 
the Otapiri Series or Upper Trias. 
Conclusions as to the Age of the Beds. —The following is a list of the fossils here 
described from Mokoia Farm :— 
Equisetales— 
Equisetites Nicoli sp. nov. 
Fern-like Plants— 
Dictyophyllum obtusilobum ? (Braun). 
Thinnfeldia sp. 
Coniopteris hymenophylloides (Brongn.). 
Sphenopteris (Rujfordia) Goepperti Dunk. 
S. qorensis sp. nov. 
S. Currani ? (Ten.-Woods). 
Cycadophyta— 
Nilssonia compta ? (Phill.).j 
Pinnule of a Cycadophyte. 
CoNIFERALES- 
Elatocladus conferta (0. & M.). 
Stachyotaxus ? sp. 
Araucarites cutchensis Feist. 
I regard this flora as probably of Lower Jurassic age. Coniopteris hymenophylloides 
and Nilssonia compta are species abundant in the Lower Oolite (Middle Jurassic) of 
Britain. Equisetites Nicoli sp. nov. is closely similar to a species which also occurs 
on this horizon in Scotland. Sphenopteris (Ruffordia) Goepperti ranges from the Jurassic 
to the Wealden, but has been recorded from the Middle Jurassic of Grahamland 
and England. The Jurassic affinity of the flora is thus clear. Sphenopteris Currani 
occurs on an unknown horizon of the Jurassic of Australia. 
On the other hand, Dictyophyllum obtusilobum is only known from the Rhsetic, 
and Stachyotaxus is apparently confined to this horizon, if we except certain doubtful 
(1) Though both Mokoia Farm and Gore, the nearest town, are in Southland County as now con¬ 
stituted, Mokoia Farm is in the old provincial district of Otago. The name Gore, as used 
throughout this memoir, almost invariably refers to Mokoia Farm. Southland now means 
the present county of that name, together with the adjoining county of Wallace, or part of 
it, rather than the old provincial district of Southland.—[P. G. M.] 
(2) McKay (1881). (3) McKay (1881), p. 42. 
