Stromboidea
Original Description of Teneposita laeva by Loch, 1989:
- "Shell small (<3 cm), high-spired; spire of 6-7 whorls including nucleus of four whorls, nucleus bearing thin carina on third and fourth whorls, otherwise smooth; transverse crescentic ribs beginning on fifth or sixth whorl quickly overprinted within one-quarter whorl by 9-12 spiral threads, which obscure nuclear carina; ornamentation becoming stronger abapically; single thick carina reasserted in the penultimate (sixth to seventh) whorl; thick carina joined by a second carina on body whorl, both continuing across outer lip, diverging at distal margin; ornamentation other than carinae and growth lines nearly lost on outer lip; carinae extending beyond thickened distal margin of outer lip, drawn in to labral digitations; anterior labral digitation smaller, directed anteriorly; major labral digitation posterior, scythe-like, gently curving towards posterior, extending to the height of apex; callus added about aperture, thickening outer lip and forming 8-9 apertural denticulations; inner lip also callused, callus extending across columella and into short, spikelike, opposing third digitation; callus extending along spire, merging with posterior canal, canal continues adnate to spire, beyond spire arcing gently away from the columellar axis and somewhat dorsally; groove present on ventral surface of posterior canal, large labral digitation, and opposing digitation; aperture elliptical and drawn into anterior canal; anterior canal long and thin, bent slightly at the base of body whorl and directed ventrally; length of anterior canal up to 10 percent greater than that of spire and body whorl combined. "
Locus typicus: South California, USA.
Stratum typicum: Point Loma Formation, Campanian, Cretaceous
Teneposita laeva Loch, 1989; Point Loma Formation, Campanian, Cretaceous; South California, USA; Holotype LACMIP 7199; Photo James D. Loch
Teneposita laeva Loch, 1989; Point Loma Formation, Campanian, Cretaceous; South California, USA; Paratype LACMIP 7204; Photo James D. Loch
Teneposita laeva Loch, 1989; Point Loma Formation, Campanian, Cretaceous; South California, USA; Paraype LACMIP 7200; Photo James D. Loch
Teneposita laeva Loch, 1989; Point Loma Formation, Campanian, Cretaceous; South California, USA; Photo James D. Loch
References
- Loch J.D. (1989). A new genus of aporrhaid gastropod from southern California. Journal of Paleontology, Vol. 63, No. 5, 1989, p. 574-577
