62 
GRAPTOLITES OF AUSTRALIA 
below these again the Bendigo Zones form a Tetragraptus 
fruticosus series. 
DIPLOGRAPTUS SERIES 
(In the following table, c = common, r = rare, v = very) 
Zone of Diplograptus (Glyp'tograptus) teretiusculus (highest). 
Typical locality: Ba 67 at junction of Riddell’s and Jackson’s Creeks 
(Q.S. 6 SE.). 
Characteristic assemblage : 
Diplograptus teretiusculus His. (v.c.). 
euglyphus Lapw. (c.). 
Climacograptus riddellensis Harris (c.). 
Cryptograptus tricornis Carr. (c.). 
Glossograptus hincksii Hopk. (c.). 
Retiograptus speciosus Harris (c.). 
Isograptus caduceus var. tenuis Harris var. (v.r.). 
lOidymograptus (horizontal spp.) (c.). 
Pterograptus lyricus Keble & H. 
Zone of Diplograptus (Glyptograptus) euglyphus. 
Typical localities: Turner’s Quarry; Eight-Mile, Howqua River. 
As above, except that Diplograptus teretiusculus has not been recognized 
with certainty, Tetragraptus is more common, and Retiograptus 
speciosus not yet recorded. Isograptus ovatus occurs at both 
typical localities, though elsewhere it seems to be an Upper Ordo- 
vician form. 
Zone of Diplograptus {IMesograptus) dccoratus {D. aff. coelatus). 
Typical localities: Loc. 164 Strathfieldsaye ; loc. 300, Sedgwick; Allot. 
8, Sec. XXIX Pluntly. 
Diplograptus ( ?Mesograptus) decoratus Harris & T. (v.c.). 
D. (Amplexograptus) confertus Lapw. (c.). 
differtus Harris & T. (c.). 
modicellus Harris & T. (c. locally). 
Cryptograptus schaferi Lapw. 
Lasiograptus proteus Harris & T. 
Isograptus forcipiformis (Rued.). 
Carcliograptus crawfordi Harris. 
Brachiograptus etaformis Harris & K. 
Trigonograptus ensiformis J. Hall. 
Didymograptus nodosus Harris (v.c.). 
dubitatus Harris & T. 
cognatus Harris & T. 
cuspidatus Rued, 
acriculus Keble & H. 
Atopograptus woodward! Harris. 
Phyllograptus nobilis Harris & K. (v.c.). 
Tetragraptus spp. 
In what are probably the lower beds of this zone, D. decorates, D. 
nodosus and Lasiograptus etheridgei are the commonest species 
as, e.g., at loc. 176 and north-west of Turner’s Quarry. A similar 
assemblage, with Didymograptus nodosus, very rare, is found at 
Woodend (Allot. 95, 99) and at Newham (Sec. 20). 
