Serripecten yahliensis (Tenison Woods, 1865)
TENISON WOODS, J. E. 1865. On the Tertiary rocks of South Australia. No. II. The Mount Gambier fossils. Adelaide Philosophical Society. Annual Report and Transactions for the year ending 30th September 1865 (9 unpaginated papers and 2 unnumbered plates) [pl. 1, fig. 4]
1865 Pecten yahliensis Tenison Woods, 1865
1873 Pecten beethami Hutton, 1873
1873 Pecten hutchinsoni Hutton, 1873
1873 Pecten beethami Hutton, 1873
1873 Pecten hutchinsoni Hutton, 1873
«Pecten Yahliensis. Plate 1, fig. 4.— Shell thin, equivalve, inequilateral; upper valve subconvex, lower valve much more so; upper valve covered with numerous regularity but faintly imbricated ribs; lower valve with about 30 well.marked but neatly smooth ribs; ears large and unequal, those of the lower valve sinuated with serrated fringe-like edges; upper ones ribbed and imbricated is in valve, with straight margin overlapped by lower; length 28, breath 3 inches. The only perfect specimen of this beautiful species species was got for me in sinking a well close to Yahl, Mount Gumbier; but imperfect valves are not uncommon. The fringe-like serration og the ears give the shell a marked character, which distinguishes it from any other, It is certainly, without exception, the most beautiful fossil in the formation»
JULIAN EDMUND TENISON WOODS, 1865
(From The South Australian Register, 29 (5795): p. 2, col. 4 [newspaper, issued 29 May 1865; also seen as a two-page pamphlet with identical text, but modified heading, column broken into three to fit the page, and a plate added; apparently issued almost simultaneously with newspaper].)
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«Description. Very large (to 150 mm high, 170 mm wide), width markedly exceeding height in large specimens, small ones equidimensional; umbonal angle very wide (140-145°); RV much more inflated and much more coarsely sculptured than LV, which is conspicuously flattened near umbo on many specimens. RV exterior sculptured with c. 30-50 narrow radial costae (about 40 on many specimens), c .4—6 near centre of disc symmetrical and of triangular section, with central keel and scales on crests, remainder bevelled, inclined towards disc ends, ie., anterior costae inclined towards anterior end and posterior costae inclined towards posterior end of disc, with short, almost vertical face towards ends and long, nearly smooth, gently inclined face towards disc centre, each costa margined by small to large, obvious, triangular scales lying on gently inclined face of neighbouring costa; some specimens have one or a few fine, inconspicuous secondary and tertiary costellae in interspaces. LV with up to three times as many costae that are much lower, narrower and more closely spaced than on RV, and rendered finely and evenly scaly by low, thin, sinuous, closely spaced commarginal lamellae over entire disc. Auricles low and very wide, almost symmetrical in large shells; RV anterior auricle retaining moderately deep byssal notch (with height about equal to depth) and functional ctenolium to more than half adult size (to c. 100 mm wide), byssal notch thereafter reduced, very shallow in large specimens; RV auricles with sculpture as on disc, dorsal margins coarsely and conspicuously scaly, with large triangular scales projecting vertically from commarginal growth ridges. LV auricles long, low, as in RV, sculptured as on LV disc. RV auricles separated from disc by deep, undercut grooves, not present in S. carteri. Interior weakly corrugated but without carinae. Hinge with low, narrow dorsal and resilial teeth only.»
BEU, A. G. & T. A. DARRAGH. 2001. Revision of southern Australian Cenozoic fossil Pectinidae (Mollusca: Bivalvia). Proceedings of the Royal Society of Victoria, 113: 1-205, figs. 1-67. [p. 76, 77]
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Serripecten yahliensis (Tenison Woods); A. G. Beu & T. A. Darragh, 2001, Revision of southern Australian Cenozoic fossil Pectinidae, figures 24, 25.
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«Pecten yahliensis T. Woods, 1865, pl. 1, figs. 4a, b.
Observations. The figured specimen of this handsome species is the only complete example to be found in the sediments frdm the Lakes Entrance Shaft although complete and broken single valves are common in the beds which represent the Bairnsdale substage of the Balcombian (Crespin, 1943). Numerous specimens of the species were present at the depth of 320 feet where they were associated with an assemblage of macrofossils including Clypeaster gippslandicus McCoy and Hinnites corioensis McCoy, which is characteristic of the Bairnsdale substage. One specimen was recorded at the depth of 547 feet in the Batesford substage. The valves were always bluish grey in colour.
S. yahliensis was originally described from a well at Yahl near Mt. Gambier, South Australia. The dimensions of the figured specimen are: height, 110 mm., length, 120 mm., thickness of valves, 35 mm. Occurrence. In grey, bryozoal limestone at 325 feet. Comm. Pal. Coll. No. F.12,040, Type No. 634. Age. Middle Miocene (Balcombian Stage, Bairnsdale substage).» CRESPIN, I. 1950. Some Tertiary pelecypods from the Lakes Entrance oil shaft, Gippsland, Victoria. Proceedings of the Royal Society of Victoria [New Series], 60: 149-156, pls. 14-17. [p. 152]
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Serripecten yahliensis (T. Woods); I. Crespin, 1950, Some Tertiary pelecypods from the Lakes Entrance oil shaft, Gippsland, Victoria, plate 16, figures 14, 15.
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