Leptoconus adelaide (Ludbrook, 1958)

Conus hamiltonensis Ludbrook, 1941, Trans. Rov.Soc. S. Aust. 65 (1). p. 101. 1954

Diagnosis — A small Floraconus, biconical, with a fairly high gradate spire. Protoconch of moderate size, mamillate, of one-and-a-half tums; adult whorls with 3 spiral threads on the shoulder. Body-whorl smooth, except for 10 punctate spirals, followed by 1 broad spirals, then 4 narrow spirals from about the middle of the whorl to the anterior ⁽¹⁾.

Description of Holotype — Shell small for the genus, biconical, spire fairly high, gradate. Protoconch of moderate size, mamillary of one-and-a-half turns; adult whorls angulate, with 3 spiral threads on the shoulder. Body whorl conical with straight sides, smooth posteriorly, sculptured from about the middle, with 10 punctate spirals followed by 4 broad spirals, then 4 narrow spirals at the anterior extremity. Aperture rather narrow, attached below the shoulder, outer lip thin, convex in profile ⁽¹⁾.

Dimensions of Holotype — Height 22. diameter 11, length of aperture 17 mm

Type Locality— Weymouth's Bore, 310-330 feet.

Location of Holotype — Tate Mus. Coll., Univ. of Adelaide, F 15436,

Observations — The subgenus has an established lineage in the Australian Tertiary, and occurs throughout Australian waters as well as in the Pacific today ⁽¹⁾.

Material — Holotype.

Stratigraphical Range — Dry Creek Sands.

Geographical Distribution — Abattoirs Bore, Adelaide District

Bibliografia Consultata

• (1) - Ludbrook, N.H. (1958). The molluscan fauna of the Pliocene strata underlying the Adelaide Plains. Part V-Gastropoda (Eratoidae to Scaphandridae). Transactions of the Royal Society of South Australia. 81: 43-111, 6 pls.

• (2) - Ludbrook (1941) : Gastropoda from the Abattoirs Bore, Adelaide, South Australia, together with a List of some Miscellaneous Fossils from the Bore