Conomodulus Landau, Vermeij & Reich, 2014
publication ID |
https://doi.org/ 10.11646/zootaxa.4103.2.12 |
publication LSID |
lsid:zoobank.org:pub:AC27CA02-845A-44D1-9937-BD4FF6D3095A |
DOI |
https://doi.org/10.5281/zenodo.6080863 |
persistent identifier |
https://treatment.plazi.org/id/03A087DB-FFCE-FFB8-FF15-F8F54EB838B2 |
treatment provided by |
Plazi |
scientific name |
Conomodulus Landau, Vermeij & Reich, 2014 |
status |
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Conomodulus Landau, Vermeij & Reich, 2014 View in CoL
Type species: Modulus preangerensis K. Martin, 1905 (by original designation); Miocene, Java, Indonesia.
Conomodulus neocaledonensis sp. nov.
( Figs. 2 View FIGURE 2 D, 3, 4)
Type material (Recent). Holotype [MNHN-IM-2000-31117, figs. 2D, 3, 4D–I], dimensions: SL= 8.7 mm, SD= 7.7 mm, SWL= 6.8 mm; paratype [MNHN-IM-2000-31116, fig. 4A–C], dimensions: SL= 7.5 mm; SD= 6.8 mm.
Type locality. New Caledonia, Ouen Island, Baie du Prony [Lagon program, St. 243, 22°24 S, 167°01 E].
Etymology. From its type locality.
Description. Shell small, solid, shouldered, turbiniform with a pyramidal shape and a relatively tall spire. Protoconch unknown. Teleoconch of more than four whorls, separated by deeply impressed and undulating suture. Sculpture of large rounded axial ribs, almost as broad as the interspaces, and irregular spiral cords. Eleven axial ribs (on holotype and paratype) on penultimate whorl with adapical termination along suture; spiral cords very faint, except four to five stronger cords that are more developed when crossing ribs. Scars on shell subsequent to pronounced and irregular axial growth lines covering body whorl.
Body whorl occupies 78% of total length of shell, shouldered, roundly angular at periphery. Axial sculpture of ten ribs, well-developed on abapical part of whorl, stopping abruptly at periphery of base just at beginning of outer lip. Base straight sided, bearing four to five primary spiral cords, one more keeled below periphery, with spiral threads in interspaces. Umbilicus small, but relatively deep. Aperture large, ovate, with fine callus on parietal wall and siphonal canal represented by broad depression; anal canal not developed. Columella deeply excavated in mid-portion, with welldeveloped callus and strong, abapical columellar tooth. Outer lip, likely sharp, prosocline, regularly rounded; inside of labium smooth.
Taenioglossan radula ( Fig. 3 View FIGURE 3 ). Rachidian tooth with rounded, square, smooth basal plate; central cusp large, pointed, flanked on each side by two smaller cusps. Lateral teeth curved, trapezoidal in shape; with six to seven cusps; first inner two cusps relatively large, following four cusps smaller and tapering in size, outermost seventh cusp very small, barely visible. Marginal teeth long, spatulate with six elongated cusps.
Operculum thin, corneous, circular, multispiral with a tiny central nucleus.
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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