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Species / Goniocheila Lirata

Goniocheila Lirata

Stromboidea


Original description of Chenopus liratus by Conrad, 1847, p. 287:

  • "Ovate, with thick dilated labrum; whorls nine, convex, ribbed longitudinally, and with revolving lines; ribs curved, undulated on the body whorl and subnodose above; body whorl gibbous; aperture narrow; callus of the labium profound. Length 3/4."

Locus typicus: Mississippi, USA

Stratum typicum: Vicksburg Group, lower Oligocene

Comment

  • Conrad, 1847 does not give a drawing

History and Synonymy

1848

Original description of Chenopus liratus by Conrad, 1848, p. 117:

  • "Ovate, with thick dilated labrum; whorls nine, convex, ribbed longitudinally, and with revolving lines; ribs curved, undulated on the body whorl and subnodose above; body whorl gibbous; aperture narrow; callus of the labium profound. Length 3/4."

Chenopus liratus Conrad, 1848, pl. 11, fig. 35

1868

Aporrhais (Goniocheila) liratus in Gabb, 1868, pl. 13, fig. 11

Aporrhais (Goniocheila) liratus in Gabb, 1868, pl. 14, fig. 12

1984

Description of Aporrhais (Goniocheila) lirata by MacNeil & Dockery, 1984, p. 70:

  • "Shell of medium size for the genus; spire moderatly short; whorls weakly rounded, sutures moderatly impressed; body whorls partly concealing penultimate whorl; mature aperture with a very thick outer lip, anal sinus appressed on spire, peripheral sinus curved, impressed and forming a prominent upward curving point, siphonal canal shallow; columella short, thick and curving towards the aperture; parietal callus moderatly thick, more produced and forming a prominent bump at about the margin of the base; protoconch smooth and slightly bulbous (first whorl crushed on specimen at hand), probably about two whorls; postnuclear whorls with thin curved axial riblets (about 12 visible from an angle) which are flattened and smooth on top, and raised rounded spiral riblets (9 to 10) extending as cross-bars between the axial ribs; last half of body whorl with the axial ribs swollen to form axially elon gate nodes where they cross three prominent spiral ridges, and the spirals coarser and crossing the axial ribs; on the apertural flare the spirals diverge and secondary spirals develop; columella with fine regular raised spirals, no axials."

Specimens from institutional collections

Goniocheila lirata (Conrad, 1847); Byram Formation, Oligocene; Keyes Scrap Mill, Warren County, Mississippi, USA; Coll. Stichting Schepsel Schelp


References

  • T.A. Conrad, 1847. Observations on the Eocene formation, and description of one hundred and five new fossils of that period, from the vicinity of Vicksburg, Mississippi, with an Appendix; Proceedings of the Academy of Natural Sciences of Philadelphia, vol. 3(11), 1847, p. 280-299, Fulltext
  • T.A. Conrad, 1848. Observations on the Eocene formation, and descriptions of one hundred and five new fossils of that period, from the vicinity of Vicksburg, Mississippi, with an Appendix; Journal of the Academy of Natural Sciences of Philadelphia, ser. 2, vol. 1, 1848, p. 111-134, pls. XI-XIV,Fulltext
  • Gabb, 1868
  • MacNeil & Dockery, 1984

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