Distorsio mcgintyi Emerson & Puffer, 1953

Sacchetti, Claudia, Landau, Bernard & Ávila, Sérgio P., 2023, The Lower Pliocene marine gastropods of Santa Maria Island, Azores: Taxonomy and palaeobiogeographic implications, Zootaxa 5295 (1), pp. 1-150 : 63

Distorsio mcgintyi Emerson & Puffer, 1953

Plate 4 E 1 -E 3

Distorsio (Distorsio) decussatus simillimus (Sowerby) —Woodring (partim) 1928: 300, pl. 18, fig. 9, pl. 19, fig. 1.

Distorsio constricta floridana Olsson & McGinty 1951: 27 , pl. 1, figs. 5, 6, 9 (junior secondary homonym of Personella floridana Gardner, 1947 , transferred to Distorsio by Emerson & Puffer, 1953).

* Distorsio mcgintyi Emerson & Puffer 1953: 101 (replacement name for D. floridana Olsson & McGinty, 1951 , preoccupied).

Distorsio constricta macgintyi Emerson & Puffer, 1953 — Abbott 1954: 197, pl. 25z.

Distorsio (Rhysema) mcgintyi Emerson & Puffer — Clench & Turner 1957: 240, pl. 132, figs. 9-10; pl. 134, figs. 1-5.

Distorsio macgintyi — Parker 1960: 323, pl. 5, fig. 4.

Distorsio mcgintyi Emerson & Puffer, 1953 — Warmke & Abbott 1961: 103, pl. 18, fig. c.

Distorsio constricta macgintyi Emerson & Puffer — Lewis 1972, fig. 40.

Distorsio (Rhysema) mcgintyi Emerson & Puffer — Kilias 1973: 204, fig. 146.

Distorsio macgintyi Emerson & Puffer — Morris 1973: 185, pl. 50, fig. 8.

Distorsio constricta macgintyi Emerson & Puffer, 1953 — Abbott 1974: 166, fig. 1771.

Distorsio constricta macgintyi Emerson & Puffer, 1953 — Rios 1975: 80, pl. 22, fig. 328.

Distorsio macgintyi Emerson & Puffer 1953 — Humfrey 1975: 125, pl. 14, fig. 2, 2a.

Distorsio constricta macgintyi Emerson & Puffer — Laursen 1981: 27, fig. 43.

Distorsio (Rhysema) constricta mcgintyi Emerson & Puffer, 1953 — Coelho et al. 1981: 132, fig. 14.

Distorsio constricta macgintyi Emerson & Puffer, 1953 — Rios 1985: 78, pl. 28, fig. 341.

Distorsio constricta macgintyi Emerson & Puffer, 1953 — Parth 1989a: 52, centre right fig.

Distorsio macgintyi Emerson & Puffer, 1953 — Parth 1989b: 8, bottom left fig.

Distorsio macgintyi Emerson & Puffer, 1953 — Lipe & Abbott 1991: 14, illus.

Distorsio macgintyi Emerson & Puffer, 1952 [sic]— Henning & Hemmen 1993: 143, pl. 28, fig. 4.

Distorsio mcgintyi Emerson & Puffer, 1953 — Díaz & Puyana 1994: 172, fig. 648.

Distorsio constricta macgintyi Emerson & Puffer, 1953 — Rios 1994: 91, pl. 30, fig. 359.

Distorsio constricta macgintyi Emerson & Puffer, 1953 — Kronenberg 1994: 70, text-fig. 10, pl. 1, fig. 3; pl. 2, fig. 7.

Distorsio constricta macgintyi Emerson & Puffer, 1953 — Pointier & Lamy 1998: 99, figure.

Distorsio constricta ( Broderip, 1833) —Beu 2001: 712, fig. 1.9 (non Triton constrictus Broderip, 1833 ).

Distorsio mcgintyi Emerson & Puffer, 1953 — Lee 2009: 84, fig. 408.

Distorsio constricta macgintyi Emerson & Puffer, 1953 — Rios 2009: 165, fig. 394.

Distorsio mcgintyi Emerson & Puffer, 1953 — Beu 2010: 92, pl. 13, figs. 2-3, 6-8; pl. 17, figs. 6, 8; pl. 18, figs. 1-2, 4-5, 7-9; pl. 19, figs. 1, 4.

Distorsio mcgintyi Emerson & Puffer, 1953 — Landau & Silva 2010: 57, pl. 11, figs. 9-10.

Santa Maria material examined. Maximum height 31.0 mm, width 18.0 mm. DBUA-F 1189-1 (1), Pedra-que-pica, Santa Maria, Azores, Touril Complex, Lower Pliocene.

Revised description. See Beu (2010: 92).

Discussion. Distorsio mcgintyi Emerson & Puffer, 1953 is a member of a group of strongly distorted Distorsio species including also Distorsio constricta ( Broderip, 1833) , Distorsio jenniernestae Emerson & Piech, 1992 and Distorsio minoruohnishii Parth, 1989 . Distorsio mcgintyi has the most distorted shell of this group. For full discussion and comparison see Beu (2010).

This is the first record of the species outside the western Atlantic area, and it is interesting to record that in the early Pliocene the range of D. mcgintyi extended to include the Azores Archipelago. The rest of the Santa Maria assemblage has a more strongly Mediterranean character but the typical Pliocene Mediterranean D. cancellina ( Lamarck, 1803) is easily separated by its less distorted spire and more rounded last whorl. Therefore, three Tonnoidean species are shared in common with the Tropical West Atlantic: D. mcgintyi , Monoplex comptum (A. Adams, 1855) , and Aspa marginata ( Gmelin, 1791) .

Distribution. Lower Miocene: Kendace Siltstone, Carriacou ( Beu 2010); Baitoa Formation, Dominican Republic ( Beu 2010); Cantaure Formation, Venezuela ( Beu 2010). Middle Miocene: Carriacou, Grenadine Islands ( Beu 2010); Mayo River, Trinidad ( Beu 2010). Upper Miocene: Cercado Formation, Dominican Republic ( Beu 2010); Gatun Formation, Panama ( Beu 2010); Mataruca Member of Caujarao Formation, El Carrizal, Venezuela ( Beu 2010). Lower Pliocene: Araya Formation, Cubagua Island, Venezuela ( Landau & Silva 2010); Punta Gavilán Formation, Falcón, Venezuela ( Beu 2010); Bocas del Toro, Panama ( Beu 2010); Gurabo Formation, Dominican Republic ( Beu 2010); Atlantic, Santa Maria Island, Azores (this paper). Lower-Upper Pliocene: Cayo Agua and Shark Hole Point Formations, Bocas del Toro, Panama ( Beu 2010); Bowden Formation, Jamaica ( Woodring 1928 (partim), as D. decussatus simillimus ; Robinson, 1991). Upper Pliocene: Agueguexquite Formation, Mexico ( Beu 2010). Lower Pleistocene: Moin Formation, Puerto Limon, Costa Rica ( Beu 2010) . Upper Pleistocene: Swan Cay Formation, Bocas del Toro, Panama ( Beu 2010). Recent: Western Atlantic, from Cape Hatteras, North Carolina, Florida and Bermuda to southernmost Brazil, and possibly further south ( Beu 2010).

Figures

PLATE 1. A. Danilia pterostomus (Bronn, 1861), height 5.0 mm, width 4.0 mm, Forno da Cré (figure taken from Bronn in Hartung, 1861, pl. 19, fig. 2). B1-B2. Emarginula octaviana Coen, 1939, DBUA-F 487-1, height 1.8 mm, diameter 3.0 mm, Ponta do Castelo. C. Bolma cf. rugosa (Linné, 1767), DBUA-F 471-3, diameter 4.1 mm, Ponta do Castelo. D1-D5. Turbo hartungi Bronn 1861, DBUA-F 1295-1, height 9.0 mm, width 8.0 mm, Malbusca (east cave). E1-E3. Nerita cf. funata Dujardin, 1837, DBUA-F 917-1, height 4.0 mm, width 6.0 mm, Ponta do Castelo. F1-F2. Thericium crenulosum (Bronn, 1862), height 10.0 mm, width 6.0 mm, Ponta do Norte lighthouse, LNEG collection (unnumbered). G1-G2. Thericium hartungi (Mayer, 1862), height 29.0 mm, width 13.0 mm, Pinheiros (figure taken from Bronn in Reiss, 1862, pl. 1, fig. 11). H1-H2. Thericium incultum (Mayer, 1862), DBUA-F 1034-2, height 23.0 mm, width 10.0 mm, Macela viewpoint. I1-I2. Thericium incultum (Mayer, 1862), DBUA-F 1027-1, height 29.0 mm, width 11.0 mm, Malbusca II. J1-J2, K1-K2. Bittium miradouroense nov. sp., Holotype DBUAF 1034-5, height 6.8 mm, width 1.9 mm (J); Paratype DBUA-F 1034-6(1), height 5.3 mm, width 1.9 mm (K), Macela viewpoint. L1-L2, M1-M2. Bittium nov. sp., DBUA-F 488-2, height 4.5 mm, width 1.8 mm (L), height 4.2 mm, width 1.7 mm (M), Ponta do Castelo.

PLATE 3. A. A1-A2. Alvania mediolittoralis Gofas, 1989, DBUA-F 962-2, height 2.1 mm, width 1.2 mm, Ponta do Castelo. B. Alvania sleursi (Amati, 1987), DBUA-F 471-4, height 2.0 mm, width 1.1 mm, Ponta do Castelo. C1-C2. Alvania sleursi (Amati, 1987), DBUA-F 962-3, height 3.2 mm, width 1.8 mm, Ponta do Castelo. D1-D3. Rissoina pusilla (Brocchi, 1814), DBUA-F 488-1, height 5.2 mm, width 2.1 mm, Ponta do Castelo. E1-E3. Macromphalina depressa (Boettger, 1907), DBUA-F 1023-3, height height 1.0 mm, width 1.8 mm, Ponta do Castelo. F. Calyptraea chinensis (Linnaeus, 1758), DBUA-F 926-1, diameter 18.0 mm, Malbusca 2. G1-G2. Schilderia utriculata (Lamarck, 1810), height 24.0 mm, width 15.0 mm, unknown locality, LNEG collection (unnumbered). H1-H3. Erato mayeri nov. sp., Holotype DBUA-F 1189-C, height 7.7 mm, width 5.3 mm, Pedra-que-pica. I1-I3. Erato mayeri nov. sp., Paratype DBUA-F 1291-1, height 8.9 mm, width 6.0 mm, Ponta dos Frades. J1-J4. Pseudopusula parcicosta (Bronn, 1862), DBUA-F 469-1, height 9.0 mm, width 6.5 mm, Ponta do Castelo.

PLATE 4. A. Tethystrombus coronatus (Defrance, 1827), CIADP-F 32, height 119.1 mm, width 107.2 mm, Figueiral. B. Talisman scrobilator (Linnaeus, 1758), Ponta dos Cedros, size not known, LNEG collection (unnumbered, specimen not seen, part of a photograph database). C. Aspa marginata (Gmelin, 1791), DBUA-F 1428-1, height 28.0 mm, width 20.0 mm, Ponta dos Cedros. D1-D2. Monoplex comptus (A. Adams, 1855) height 25.0 mm, width 14.0 mm, Pinheiros (figure D1 taken from Bronn in Reiss, 1862, pl, 1, fig.10 and figure D2 from Mayer, 1864, pl. 7, fig. 52). E1-E3. Distorsio mcgintyi Emerson & Puffer, 1953, DBUA-F 1189-1, height 31.0 mm, width 18.0 mm, Pedra-que-pica. F. Xenophora sp., height 70.0 mm, diameter 15.0 mm, unknown locality, LNEG collection (unnumbered). G1-G3. Gibberula vignali Dautzenberg & Fischer, 1896, DBUA-F 1044-1, height 2.8 mm, width 1.6 mm, Pedra-que-pica. H1-H2. Cancellaria parcestriata Bronn, 1862, height 10.0 mm, width 6.5 mm, Pinheiros (figure H1 taken from Bronn in Reiss (1862), pl. 1, fig. 7 and figure H2 from Mayer (1864), pl. 7, fig. 51). I1-I2. Costoanachis semicostata (Sacco, 1890), DBUA-F 1034-4, height 6.9 mm, width 3.0 mm, Macela viewpoint. J. Costoanachis sp., DBUA-F 1059, height 2.7 mm, width 1.6 mm, Baía do Raposo. K. Angustifusus longiroster (Brocchi, 1814), height 36.0 mm, width 18.1 mm, unknown locality, LNEG collection (unnumbered). L. Fusinus nov. sp.?, height 51.0 mm, width 24.0 mm, Ponta do Norte lighthouse, LNEG collection (unnumbered).