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Volume 79, 1951
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Genus Leiophyllites Diener
1915. Fossilium Catalogus, 8, p. 205

Type species: Monophyllites suessi Mojsisovics

“Evolute, generally smooth, serpenticone Monophyllitidae with rounded or compressed whorl-section, arched venter and three mono-phyllic saddles in their simple suture lines.

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“Distribution: Lower Middle Trias, Anisian Alps; Bosnia; Hungary; Albania; Greece; Roumania; Anatolia; Himalayas; Tonkin; Japan” (Spath, 1934).

Leiophyllites marshalli Browne n.sp. Plate 103, figs. 3, 4, 8

Gently convex laterally, with well-rounded venter and with strong, rounded sigmoid ribs, becoming much closer anteriorly on body whorl. Umbilical slopes steep in that portion of the penultimate whorl retained, but on body whorl showing an easier slope. No sign of ribbing on the inner whorls.

Dimensions estimated as shell imperfect. Diameter, 53 mm. Height, 14 mm. Width, 12 mm. Umbilicus, 27 mm.

Holotype: New Zealand Geological Survey (R.A.S.B. coll.)

Localities: G.S. 5199, tuffs, Beaumont Stream, North Branch. G.S. 3199, top of middle layer, cliff at Homestead Gate, R.A.S.B.

[The suture line is somewhat simpler than that of the Anisian genotype and so marshalli may belong to the group of L. indoaustralicus (Welter) (Anisian, Timor) that Spath thought may be systematically separable from Leiophyllites. J. M.]