Hinnites mulderi Chapman, 1922
CHAPMAN, F. 1922. New or little-known fossils in the National Museum. Part XXVI - some Tertiary Mollusca. Proceedings of the Royal Society of Victoria [New Series], 35 (1): 1-18. [p. 5, pl. 2, figs. 9, 10]
«HINNITES MULDERI, sp. nov . (Plate II., Figs. 9, 10.)
Description.— Valves very inaequilateral, oblique, depressed. Anterior margin gently rounded near the umbo, truncately rounded towards the ventral, the posterior region is well-rounded, the margin sweeping forward and upward in an almost straight line to the umbonal angle made with the anterior. The neanic part of the shell is pectinoid, and feebly radiately striate, there being about sixteen fine costae. The ephebic and possibly gerontic stages show the characteristic irregularly undulose surface caused by the alternately concave and convex condition, of the ventral edge; shell surface of later stages with a similarly striate and radiate ornament. Muscle impression large. Resilium small, acutely triangular.
Dimensions.— Left valve, length, 57 mm.; height, 59 mm. Height of pectinoid stage, 16.5 mm. Observations.— The following characters distinguish this species from the allied Hinnites corioensis, McCoy⁷: --
Occurrence.— In the white polyzoal limestone of Batesford, near Geelong. Janjukian (Miocene).
Two valves presented by the late J. F. Mulder, Esq. The species is named after its discoverer in recognition of his assiduous and successful work in bringing to light many interesting Cainozoic forms.» 7. Prodomus. Palaeont., Dec., vi., 1879, p. 31, pl. lviii. FREDERICK CHAPMAN, 1922
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F. Chapman, 1922, plate 2.
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