158 
MEMOIRS OF THE QUEENSLAND MUSEUM. 
Locality . — Redbank Plains. 
Material. — [RP/EJ* Five specimens preserved as moulds in concretionary 
limonitic mudstone. Holotype, No. 1. 
Description . — Both the palatine and “ splenial ” dental plates are separate, 
and bear five well-defined comb ridges, and what may be a sixth, ill-defined, 
posteriorly. The ridges are striated parallel to the edge of the plate, and on a 
few of them, but not all, four or five denticles are present on the outer edge. 
The left “ splenial ” plate in specimen No. 1 (see Fig. 1), is abnormal, the 
fourth comb ridge being atrophied. 
Text-figure 1. — Epiceratodus denticulatus sp. nov. [RP/E] 1. x J (approx.) No. F. 2347, 
Qld. Mus. Coll. Holotype. Drawn from a jelly mould. ch, cerato-hyal ; cl, 
cleithrum ; c. r., cranial ribs; eth, ethmoid (?) ; l. ang . left angular ; Z. pt, left palatine ; 
Z. “ sp,” left “ splenial ” ; par, parasphenoid ; r, ribs ; r. ang, right angular ; r. pt, 
right palatine ; x, dermal bone. 
The bone labelled ethmoid (?) in Fig. 1 clearly belongs to the median 
series of dermal cranial bones, but does not match either the so-called ethmoid 
or the occipital in E. forsteri (Krefft). The degree of ossification throughout is 
the same as in the type species, and the skeletal elements preserved, including 
the scales, are indistinguishable from those of that species (see Text-figs. 1 
and 2). In the tail, the axonosts are slender and hollow ended, and the baseosts, 
which are overlapped by the thin and flexible but unjointed dermatrichia, are 
weakly developed. 
* Letters in brackets refer to labels on the specimens. Letters above the line refer 
to the localities — thus RP = Redbank Plains, CP = Cooper’s Plains ; letters below the line 
refer to the genus — thus E = Epiceratodus, B = Phareodus, N = Notogoneus, and P == 
Percolates. Counterparts are marked a, b, respectively, 
