810


Journal of Paleontology 92(5):804–837


Figure 3. Conasprella imitator (Brown and Pilsbry, 1911): specimens photographed under regular light unless otherwise noted. (1–3) ANSP 1688, lectotype of Conus imitator, “from the excavations for the locks at Gatun” (Brown and Pilsbry, 1911, p. 336), SL 34.3mm (measured from a digital image); (4) NHMW 1933/ 0018/0225-1, lectotype of Conus dalli, from Gatun, SL 26.3mm (measured from a digital image); (5) NHMW 1933/0018/0225-3, paralectotype of Conus dalli,from Gatun, SL 12.8mm (measured from a digital image); (6) NHMW 1933/0018/0226-2, paralectotype of Conus dalli, from Gatun, SL 19.2mm (measured from a digital image; anterior portion missing); (7) NHMW 1933/0018/0226-1, paralectotype of Conus dalli, from Gatun, SL 18.4mm (measured from a digital image); (8)USNM 645749, specimen figured by Woodring (1970, pl. 55, fig. 1), Panama Canal Zone, Woodring locality 177d, upper Gatun Formation, SL 45.4mm; (9, 10)USNM 645750, specimen figured by Woodring (1970, pl. 55, fig. 2), Panama Canal Zone, Woodring locality 138c, lower Gatun Formation, SL 33.0mm; (11) UF 271035, UF locality YN020, lower Gatun Formation, SL 20.6mm; (12–14) UF 259873, UF locality YN020, lower Gatun Formation, SL 41.4mm, photographed under UV light. Scale bar to left of (1) is 10mm and pertains to (1), (3–9), and (11–14); scale bars associated with (2)and (10) are 2mm.


Lectotype.—ANSP 1688 (Fig. 3.1–3.3), from the lower locks at Gatun, Panama, presumably Gatun Formation.


Occurrence.—Based on the material examined, Conasprella imitator is confirmed to span the lower to upper Gatun Forma- tion, northern Canal Zone, Panama. Woodring (1970) reported numerous additional Neogene occurrences for this species from throughout tropical America, including from elsewhere in Panama, as well as Costa Rica, Mexico, Colombia, Jamaica, and the Dominican Republic, but these await confirmation. More


recently, Landau and da Silva (2010) recognized the species as occurring in the lower Pliocene Araya Formation of Cubagua Island, Venezuela (also see Landau et al., 2008).


Description.—Maximum shell size: medium. Largest observed specimen (USNM 645749) has SL 45.4mm. Woodring (1970, p. 355) reported a specimen with SL 55mm. Last whorl.—Shape conical (RD 0.62–0.67, x=0:64;


PMD 0.91–0.94, x=0:93; N=4); outline slightly convex on posterior half, slightly concave on anterior half, resulting in


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