AUSTRALASIAN TERTIARY BRACHIOPODA 
35 
Measurements. (In mm). 
Specimen 
Total 
length 
Dorsal 
valve 
length 
Breadth Depth 
NMV P17329 
16.8 
13.2 
12.4 
9.2 
NMV PI7203 
16.6 
13.2 
11.6 
7.9 
NMV PI7204 
17.1 
13.4 
12.4 
9.2 
NMV PI7205 
15.1 
12.0 
11.4 
7.8 
NMV PI7206 
15.0 
11.9 
10.8 
8.1 
NMV PI7207 
16.3 
12.9 
11.9 
8.6 
Description. Outline trapezoidal with greatest 
width posterior to mid-length; unequally bicon¬ 
vex, ventral valve deeper than dorsal valve, with 
median carina and steep lateral slopes; dorsal 
valve with flattened umbo and shallow median 
sulcus; anterior commissure narrowly sulcate. 
Beak suberect; cardinal margin straight; 
symphytium wide. Hinge platform outline tra¬ 
pezoidal; socket ridges, crural bases and anterior 
surface of cardinal process fused but identifi¬ 
able. Median septum long, high anteriorly. Loop 
with ascending and descending branches having 
separate attachments to septum. Hinge teeth tri¬ 
angular in outline. Beak interior and lateral walls 
heavily thickened, leaving round tunnel for pe¬ 
dicle. 
Comments. A. tumida closely resembles the Re¬ 
cent species A. cumingii. In A. tumida the 
cardinal margin is typically straight and variants 
with a slightly curved margin are rare, whereas 
the cardinal margin of A cumingii varies from 
slightly to moderately curved. The ventral valve 
ofA tumida is always more strongly convex than 
the dorsal valve; in A. cumingii the valves are 
commonly equal in biconvexity. Fusion of the 
elements of the cardinalia appears to occur at a 
later stage in A. tumida than in A. cumingii ; one 
dorsal valve of the former, 9 mm in length, ex¬ 
hibits medial fusion of the crural bases but not 
with the anterior surface of the cardinal process, 
so that a small posterior hinge trough is present 
at this stage. 
Anakinetica breva sp. nov. 
Fig. 2G-L 
Magasella compta .—Tate 1880: 162-163, pi. 10, 
fig. 6a-e [non Anakinetica compta (Sowerby in Strez- 
lecki, 1845)]. 
Name. From Latin brevus (short), in reference to the 
beak length. 
Type material. Holotype NMV PI7348, paratypes 
NMVP17349, P17350, PI 34213-P12342i 6, from the 
Point Addis Limestone (Janjukian, Upper Oligocene), 
Aireys Inlet, Victoria. 
Other horizons and localities. South Australia. Man- 
num Formation (Lower Miocene): River Murray cliffs 
at Mannum. Victoria. Fyansford Formation (Longfor- 
dian. Lower Miocene): North Belmont Quarry, Geel¬ 
ong. Puebla Formation (Longfordian Lower Mio¬ 
cene): Jan Juc Point, mouth of Spring Creek, Torquay. 
Scutellina Limestone (Longfordian, Lower Miocene): 
Jan Juc, Torquay. All material cited is housed in the 
Museum of Victoria. 
Measurements. (In mm.) 
Specimen 
Total 
length 
Dorsal 
valve 
length 
Breadth Depth 
NMV PI7348 
18.0 
15.8 
14.9 
9.1 
NMV PI34213 
18.6 
15.5 
15.6 
9.7 
NMV PI34214 
17.7 
15.6 
16.0 
9.4 
NMV PI34215 
17.4 
15.4 
14.4 
9.0 
NMV PI34216 
16.1 
14.0 
12.8 
'8.6 
Description. Outline ovate, greatest width 
slightly posterior to mid-length. Dorsal valve 
almost plane, umbo flattened with median sul¬ 
cus. Anterior commissure deeply and narrowly 
sulcate. Beak suberect; cardinal margin straight. 
Hinge platform short, length approximately 3 
mm in dorsal valve 15 mm long; outline tra¬ 
pezoidal; anterior surface of cardinal process 
prominent, fused dorsally. Median septum 
short, terminating posterior to mid-length. Loop 
with thin lateral connecting bands. Hinge teeth 
triangular in outline. Lateral walls and beak in¬ 
terior moderately thickened. 
Magadinella Thomson, 1915 
Type species. Magasella Woodsiana Tate, 1880 from 
the Upper Oligocene to Middle Miocene of Aus¬ 
tralia. 
Other species. M. mineuri Richardson, 1987; M. ham- 
iltonensis sp. nov. 
Tig. 2. A-F, Anakinetica tumida sp. nov. A, paratype NMV PI 7330, dorsal interior, x 4. B, D-F, holotype NMV 
PI7329, dorsal, ventral, lateral, and anterior (ventral valve uppermost) views, x 3. C, paratype PI7331, ventral 
interior, x 3. G-L, Anakinetica breva sp. nov. G, paratype NMV PI 7349, dorsal interior, x 4. H-K, holotype 
NMV PI 7348, dorsal, lateral, anterior (ventral valve uppermost) and ventral views, x 2.25. L, paratype NMV 
PI7350, ventral interior, x 2.5. 
