Paradentalium gouldii ( Dall, 1889 )

Caetano, Carlos Henrique Soares, Scarabino, Victor & Absalão, Ricardo Silva, 2006, Scaphopoda (Mollusca) from the Brazilian continental shelf and upper slope (13 º to 21 ºS) with descriptions of two new species of the genus Cadulus Philippi, 1844, Zootaxa 1267, pp. 1-47 : 10

publication ID	https://doi.org/10.5281/zenodo.173183
DOI	https://doi.org/10.5281/zenodo.6258388
persistent identifier	https://treatment.plazi.org/id/CC6E8784-FFF3-FFB2-FF54-FEB8F955D439
treatment provided by	Plazi (2016-04-04 11:54:41, last updated 2024-11-26 03:01:04)
scientific name	Paradentalium gouldii ( Dall, 1889 )
status	comb. nov.

Treatment

Paradentalium gouldii ( Dall, 1889) View in CoL n.comb.

Figs. 6–10 View FIGURES 1 – 19

+ Dentalium gouldii Dall 1889: 424 View in CoL ; 1890: 295; Rios 1994: 305, pl. 105, fig. 1495; Steiner and Kabat 2004: 595; Gracia et al. 2005: pl. 1, fig. 2.

+ Dentalium (Dentalium) gouldii: Henderson 1920: 29 View in CoL ; Scarabino 1975: 183 (no pl. 58, fig. 892); Scarabino 1985: 197, pl. 71, fig. 1007.

+ Dentalium (Dentalium) gouldii gouldii: Henderson 1920: 30 View in CoL , pl. 2, figs 6, 7.

+ Dentalium (Dentalium) gouldii portoricense Henderson 1920: 30 , pl. 2, fig. 5; Emerson 1952: 2; Warmke and Abbott 1961: 222, fig. 34c.

+ Dentalium (Dentalium) gouldii colonense Henderson 1920: 31 View in CoL , pl. 3, fig. 6.

+ Dentalium gouldii colonense: Altena 1971: 86 View in CoL .

Material examined

Paralectotype MCZ 7707 of Paradentalium gouldii ; IBUFRJ 10796, sta C76, 4 dd; IBUFRJ 14297, sta A3, 1 dd; IBUFRJ 14298, sta C13, 2 dd.

Distribution

USA: South Carolina ( Dall 1889); Puerto Rico ( Henderson 1920); Surinam ( Altena 1971); Colombia ( Gracia et al. 2005); Brazil: off Amapá ( Scarabino 1994), Bahia and Espírito Santo (this study). No specimen recorded alive; shells recorded 47– 260m.

Remarks

Paradentalium gouldii shares the outline with P. americanum (Chenu, 1843) , with hexagonal section at apex and aperture, differing in having intercostal spaces longitudinally sculptured by very fine striae. One of the paralectotypes, MCZ 7707, is much eroded making it impossible to verify the longitudinal sculpture ( Fig. 6 View FIGURES 1 – 19 ). Pilsbry and Sharp (1987) suggest the synonymy between P. gouldii and P. americanum , but at this moment we prefer to treat them as valid species and our specimens are identified as Paradentalium gouldii mainly because of the presence of longitudinal sculpture between ribs.

References

Altena, C. O. R. (1971) The marine mollusca of Suriname (Dutch Guiana) Holocene and recent, 2, Bivalvia and Scaphopoda. Zoologische Verhandelingen, 101, 1 - 49.

Dall, W. H. (1889) Reports on the results of dredgings under the supervision of Alexander Agassiz, in the gulf of Mexico and in the Caribbean Sea 1877 - 79, by the U. S. C. S. S. Blake , Lieutenant commander G. D. Sigsbee, USN, and commander J. R. Bartlett, USN, commanding. XV. Report on the Mollusca. Part II. Gastropoda and Scaphopoda. Bulletin of the Museum of Comparative Zoology, 18, 1 - 492.

Emerson, W. K. (1952) The scaphopod mollusks collected by the first Johnson-Smithsonian deepsea expedition. Smithsonian Miscellaneous Collections, 117, 1 - 14.

Gracia, A.; Ardila, N. E.; Rachello, P. & Diaz, J. M. (2005) Additions to the scaphopod fauna (Mollusca: Scaphopoda) of the Colombian Caribbean. Caribbean Journal of Science, 41, 328 - 334.

Henderson, J. B. (1920) A monograph of the east American scaphopod mollusks. United States National Bulletin, 111, 1 - 177.

Scarabino, V. (1975) Class Scaphopoda. In: Rios, E. C. Brazilian Marine Mollusks Iconography. Fundacao Universidade do Rio Grande, Rio Grande. pp. 180 - 186, pls. 58 - 59.

Scarabino, V. (1985) Class Scaphopoda. In: Rios, E. C. Seashells of Brazil. Fundacao Universidade do Rio Grande, Rio Grande. pp. 196 - 202, pls. 71 - 73.

Scarabino, V. (1994) Class Scaphopoda. In: Rios, E. C. Seashells of Brazil. 2 nd edition. Fundacao Universidade do Rio Grande, Rio Grande. pp. 305 - 310, pls. 105 - 107.

Steiner, G. & Kabat, A. R. (2004) Catalogue of species-group names of Recent and fossil Scaphopoda (Mollusca). Zoosystema, 26, 549 - 726.

Warmke, G. & Abbott, R. T. (1961) Caribbean seashells. Livingstone Publish., Narbeth. 348 pp., 44 pls.

Figures

FIGURES 1 – 19. Genus Dentalium and Paradentalium. (1 – 5) Dentalium laqueatum, (1) IBUFRJ 14233, 40 mm, (2 – 5) IBUFRJ 14238, 27 mm; (6 – 10) Paradentalium gouldii, (6) Paralectotype MCZ 7707, (7 – 10) IBUFRJ 10796, 10 mm; (11 – 15) Paradentalium disparile, (11 – 13) IBUFRJ 7744, 36 mm, (14 – 15) other specimen from the same lot exibiting the apical pipe, 29 mm; (16 – 19) Paradentalium infractum, IBUFRJ 14240, 45 mm. Scale bar = 100 m.