Conus lombardii (Hendricks, 2015)

 

 

Description (1)

 

Shell size. Shell moderately small (largest observed specimen, PRI 67215, is 29.5 mm; this specimen is slightly damaged). Last whorl. Typically conical, but sometimes ventricosely conical (RD 0.65–0.70, μ = 0.67; PMD 0.83–0.90, μ = 0.88; n = 11); outline slightly convex. Shoulder angulate, smooth. Widest part of shell just below shoulder. Aperture slightly wider at base than near shoulder. Siphonal notch absent. Spiral threads, which are often beaded, on anterior half, diminishing towards shoulder. Spire whorls. Spire height moderate (RSH 0.14–0.20, μ = 0.17; n = 11); outline straight to slightly concave. Protoconch unknown. One specimen (PRI 67215) shows possible evidence of one tuberculate postnuclear whorl; tubercles otherwise absent from all spire whorls. Sutural ramp sigmoidal, unornamented. Subsutural flexure asymmetrical; depth about 1.7–2x width(1).

 

Coloration pattern. Two noninteracting patterns present. The primary (base) pattern, partially exposed on eroded posterior dorsal surface of last whorl on PRI 67213 (Fig. 28G), consists of a network of small, chevron-shaped markings. The secondary pattern consists of 27–41 (number increases with shell size) rows of spiral dots or dashes extending from base to shoulder; the dashes are often concentrated, forming several false spiral bands. The two patterns differ in the color of emitted light. Sutural ramp with radial blotches; PRI 67213 suggests that these are extensions over the shoulder of the primary pattern on the last whorl and hence are the only features of the primary pattern that are typically visible on most shells (1).

 

Etymology

Named in honor of Vincent Lombardi (1913–1970), former coach of the Green Bay Packers who led the team to victory in Super Bowl I and II (1).

 

Remarks

Conus lombardii is similar to two other fossil species from the Neogene of the Dominican Republic: C. kaesleri sp. nov. and C. spurius Gmelin, 1791. See remarks associated with C. kaesleri for important differences that separate these three species, as well as justification for the tentative placement of C. lombardii in the subgenus Spuriconus (1).

 

 

 

 

 

Fig 28. Conus (Spuriconus?) lombardii Hendricks sp. nov.

All specimens are from locality station TU 1422 (Cercado Fm.).

(A-E) PRI 67207 (holotype), SL 24.7 mm;

(F) PRI 66165 (paratype), SL 27.4 mm;

(G) PRI 67213 (paratype), SL 23.7 mm;

(H-I) PRI 67218 (paratype), SL 20.5 mm;

(J-K) PRI 67217 (paratype), SL 17.9 mm.

 

 

 

 

 

 

 

Bibliografia Consultata

 

·         (1) - Hendricks (2015) “Glowing Seashells: Diversity of Fossilized Coloration Patterns on Coral Reef-Associated Cone Snail (Gastropoda: Conidae) Shells from the Neogene of the Dominican Republic”