1,721,044 research outputs found
Panacca
No full textPanacca ? sp. Fig. 9 m–o Diagnostic characters. Thin oval shell; posterior ventral gape; rounded posterior side; radial rows of minute, rounded to conical pustules. Prodissoconch: shell type ST-2C; length about 170 µm (P-1 about 150 µm); roundish outline; convex profile; P-1 surface weakly rough, with irregular commarginal wrinkles abapically; P-1/P-2 boundary step-like, with a weak sinuation on the ventral margin; P-2 narrow and flattened; transition to the nepioconch poorly defined. Remarks. This unidentified taxon differs from P. loveni in that it has a smaller and more oval shell lacking the median radial ribs. Occurrence. Box-corer samples BC71 (4 specimens), BC72 (2). Maximum length: 11 mm. Fossil record. None recorded.Published as part of Negri, Mauro Pietro & Corselli, Cesare, 2016, Bathyal Mollusca from the cold-water coral biotope of Santa Maria di Leuca (Apulian margin, southern Italy), pp. 1-97 in Zootaxa 4186 (1) on page 44, DOI: 10.11646/zootaxa.4186.1.1, http://zenodo.org/record/16528
Liostomia
No full textLiostomia sp. Fig. 17 p–r Diagnostic characters. Conical-ovate shell; whorls weakly convex; drop-shaped aperture; small umbilical chink; outer surface with sinuous growth lines only. Protoconch: heterostrophic, coaxially immersed (intorted); about 1.25 visible whorls; diameter about 300 µm; surface smooth; transition to the teleoconch marked by a simple, thin lip. Remarks. The present specimens are attributed to the genus Liostomia G. O. Sars, 1878 on the basis of the “ type C” protoconch (sensu Van Aartsen 1987) and the absence of a columellar tooth or fold. Liostomia sp. differs from the related L. clavula (Lovén, 1846) and L. afzelii Warén, 1991 [b], primarily in terms of shell shape (it is distinctly conical) and overall dimensions (it needs one more whorl to reach a comparable heigth). The northern Atlantic L. eburnea (Stimpson, 1851) is also similar, but it has slenderer shell and orthocline growth lines. Occurrence. Box-corer sample BC72 (2 specimens); cores BC04 (1), BC05 (1). Maximum height: 2.5 mm. Distribution and habitat. Liostomia species are parasites (host unknown; cf. Høisaeter 2014); they occur in both the northern Atlantic and the Mediterranean, from infralittoral to bathyal depths (Van Aartsen 1987; Van Aartsen et al. 1998; Schander et al. 2003; Petersen 2004; Høisaeter 2009).Published as part of Negri, Mauro Pietro & Corselli, Cesare, 2016, Bathyal Mollusca from the cold-water coral biotope of Santa Maria di Leuca (Apulian margin, southern Italy), pp. 1-97 in Zootaxa 4186 (1) on page 77, DOI: 10.11646/zootaxa.4186.1.1, http://zenodo.org/record/16528
Tellimya tenella Loven 1846
No full textTellimya tenella (Lovén, 1846) Fig. 8 d–f Montacuta tenella Lovén, 1846 (p. 197). Montacuta ferruginosa (Montagu, 1803) — Nordsieck 1969 (p. 94, pl. 14, fig. 52.44). Tellimya tenella (Lovén, 1846) — Palazzi & Villari 2001 (p. 26, figs. 114–115); Oliver et al. 2016 (online resource). Montacuta tenella Lovén, 1846 — Repetto et al. 2005 (p. 315, bottom left fig.). Diagnostic characters. Sub-elliptical, inequilateral shell with longer and obliquely expanded anterior side; right valve with an oblique, knobby anterior cardinal tooth; outer surface with dense, uneven growth lines. Prodissoconch: shell type ST-2A; P-2 length exceeding 260 µm; P-1 length exceeding 90 µm (underestimated measures because of SEM image foreshortening); roundish outline; convex profile; P-1 surface unavailable; P-2 apparently well separated from P-1; P-2 with fine concentric lines, more evident towards the nepioconch; transition to the nepioconch well marked. Remarks. The shell shape stands as the distinguishing character between the present species and T. ferruginosa (Montagu, 1808). Occurrence. Box-corer sample BC72 (1 specimen); core BC21 (2). Maximum length: 3 mm. Distribution and habitat. Tellimya tenella has a NE Atlantic and Mediterranean distribution, living at shelf depths associated with burrowing urchins of the genus Brissopsis (Palazzi & Villari 2001; Oliver et al. 2016). Fossil record. None recorded.Published as part of Negri, Mauro Pietro & Corselli, Cesare, 2016, Bathyal Mollusca from the cold-water coral biotope of Santa Maria di Leuca (Apulian margin, southern Italy), pp. 1-97 in Zootaxa 4186 (1) on pages 37-38, DOI: 10.11646/zootaxa.4186.1.1, http://zenodo.org/record/16528
Solatisonax bannocki Melone & Taviani 1980
No full textSolatisonax bannocki (Melone & Taviani, 1980) Fig. 16 l–n Architectonica bannocki Melone & Taviani, 1980 (p. 97, figs. 1–2). Solatisonax bannocki (Melone & Taviani, 1980) —Melone & Taviani 1984 (p. 157, figs. 12–1); Repetto et al. 2005 (p. 224, bottom right fig.). Diagnostic characters. Low-spired, almost discoidal shell; weak subsutural shoulder giving the spire a somewhat step-like profile; markedly prosocline rhomboidal aperture; wide and very deep umbilicus bordered by a row of knobs; robust peripheral keel; numerous fine spiral threads cut into minute granules by dense radial striae. Protoconch: heterostrophic; about 2 whorls, the first deeply immersed; diameter about 800 µm; surface smooth; transition to the teleoconch marked by a thin, everted lip. Occurrence. Box-corer samples BC11 (2 specimens), BC67 (1), BC68 (1), BC70 (4), BC71 (1), BC72 (11). Maximum diameter: 10 mm. Distribution and habitat. Solatisonax bannocki is distributed in the western Mediterranean basin and in the nearby Atlantic, as far south as Cape Verde; it is a bathyal species dwelling on mud and probably associated with deep-water corals (Melone & Taviani 1980, 1984). The present occurrence could be the easternmost record of the species in the Mediterranean. Fossil record. Upper and Middle Pleistocene of Calabria and Sicily Channel (Melone & Taviani 1984).Published as part of Negri, Mauro Pietro & Corselli, Cesare, 2016, Bathyal Mollusca from the cold-water coral biotope of Santa Maria di Leuca (Apulian margin, southern Italy), pp. 1-97 in Zootaxa 4186 (1) on page 73, DOI: 10.11646/zootaxa.4186.1.1, http://zenodo.org/record/16528
Mathilda coronata Monterosato 1875
No full textMathilda coronata Monterosato, 1875 Fig. 17 d–g Mathilda coronata Monterosato, 1875 [b] (p. 12). Mathilda coronata, Monterosato—Kobelt 1905 (p. 68). Mathilda coronata Monterosato, 1875 —Sabelli & Spada 1978[a] (p. 1, fig. 4); Repetto et al. 2005 (p. 226, mid right fig.); Peñas et al. 2006 (figs. 253, 293). Diagnostic characters. Turreted shell; angular teleoconch whorls; rounded aperture; numerous axial riblets crossed by four spiral cords forming nodules at the intersections; spiral cord 3 (from adapical) strongest, forming pronounced angulation and periphery; non-nodulose spirals on base. Protoconch: heterostrophic, heliciform, transaxial; 2.75 whorls; diameter about 440 µm; surface smooth; transition to the teleoconch marked by a very thin varix. Occurrence. Box-corer samples BC05 (1 specimen), BC66 (1), BC67 (2), BC71 (11), BC72 (4); core BC51 (1). Maximum height: 8 mm. Distribution and habitat. Mathilda coronata appears to be endemic of the Mediterranean Sea, where it is found on bathyal soft bottoms, often in the vicinity of deep water coral banks (Kobelt 1905; Smriglio et al. 2007). Fossil record. None recorded.Published as part of Negri, Mauro Pietro & Corselli, Cesare, 2016, Bathyal Mollusca from the cold-water coral biotope of Santa Maria di Leuca (Apulian margin, southern Italy), pp. 1-97 in Zootaxa 4186 (1) on page 76, DOI: 10.11646/zootaxa.4186.1.1, http://zenodo.org/record/16528
Roxania monterosatoi Dautzenberg & Fischer 1896
No full textRoxania monterosatoi Dautzenberg & Fischer, 1896 Fig. 19 o–q Roxania monterosatoi Dautzenberg & Fischer, 1896 (p. 404, pl. 15, figs. 3–4). Roxania pinguicola monterosatoi (Dautzenberg & Fischer, 1889) — Nordsieck 1972 (p. 18, pl. O II, fig. 22). Roxania monterosatoi Dautzenberg e Fischer—Di Geronimo & Panetta 1973 (p. 90, pl. 2, fig. 6). Roxania monterosatoi Dautz. & Fischer—Di Geronimo 1974 (p. 151). ? Roxania cfr. Monterosatoi Dautzenberg & Fischer, 1896 — Bonfitto et al. 1994 (p. 148, figs. 23–24). Roxania monterosatoi Dautzenberg & Fischer H., 1896 — Repetto et al. 2005 (p. 267, top left fig.). Diagnostic characters. Oval shell; sunken spire; ear-shaped aperture; barely reflexed basal and apical lips; nearly orthocline outer lip; thin parietal callus; unperforated base; spiral rows of shallow rounded pits, more widely spaced in the middle of the shell; spiral furrows towards the base. Protoconch: heterostrophic, submerged (hardly visible in immature specimens only); globose; surface smooth. Occurrence. Box-corer samples BC05 (3 specimens), BC66 (1), BC67 (3), BC72 (6); cores BC21 (1), BC72 (2). Maximum height: 3.5 mm. Distribution and habitat. The species is distributed in the Mediterranean and the northeastern Atlantic, as far south as the Azores and Cape Verde, being typical of bathyal and deep bathyal settings (Dautzenberg & Fischer 1896; Pons-Moyà & Pons 1999). It was found living in the bathyal of Taranto and included in the Abra-Nucula biocoenosis (Di Geronimo & Panetta 1973). Fossil record. Possibly Upper Pleistocene of Sardinia (Bonfitto et al. 1994).Published as part of Negri, Mauro Pietro & Corselli, Cesare, 2016, Bathyal Mollusca from the cold-water coral biotope of Santa Maria di Leuca (Apulian margin, southern Italy), pp. 1-97 in Zootaxa 4186 (1) on pages 84-85, DOI: 10.11646/zootaxa.4186.1.1, http://zenodo.org/record/16528
Callostracon thyrrenicum Smriglio & Mariottini 1996
No full textCallostracon thyrrenicum (Smriglio & Mariottini, 1996) Fig. 18 m–o Colostracon thyrrenicum Smriglio & Mariottini, 1996 (p. 184, figs. 1–5). Callostracon thyrrenicum Smriglio & Mariottini, 1996 — Repetto et al. 2005 (p. 254, mid-left fig.); Repetto & Bianco 2012 (p. 40, fig. 4). Diagnostic characters. Ovate shell; drop-shaped aperture; thin parietal callus deep inside the aperture; weak columellar fold; close-set spiral rows of oval pits connected in a chain-like pattern. Protoconch: heterostrophic, submerged, nearly globose; slightly more than 1 visible whorl; diameter about 700 µm; surface smooth; transition to the teleoconch marked by a thin orthocline lip. Remarks. The specimens fully conform to the types figured by Smriglio & Mariottini (1996). The genus “ Callostracon ”, as used by Smriglio & Mariottini (1996) after Nordsieck (1972), is a subsequent incorrect spelling of Colostracon Hamlin, 1884, a Mesozoic genus (cf. Bouchet 2012). The same generic name Callostracon was proposed by Repetto & Bianco (2012) for Mediterranean species. Occurrence. Box-corer samples BC71 (2 specimens), BC72 (1); core BC52 (1). Maximum height: 5 mm. Distribution and habitat. Callostracon thyrrenicum is distributed in the central Mediterranean, from the Northern Thyrrenian Sea to Malta, dwelling on coral banks and muddy bottoms at 400–600 m depth (Smriglio & Mariottini 1996; Smriglio et al. 1998). It has been regarded as an element of the CB bathyal biocoenosis (Smriglio & Mariottini 1996). Fossil record. None recorded.Published as part of Negri, Mauro Pietro & Corselli, Cesare, 2016, Bathyal Mollusca from the cold-water coral biotope of Santa Maria di Leuca (Apulian margin, southern Italy), pp. 1-97 in Zootaxa 4186 (1) on page 81, DOI: 10.11646/zootaxa.4186.1.1, http://zenodo.org/record/16528
Crenilabium exile Jeffreys 1870
No full textCrenilabium exile (Jeffreys, 1870) Fig. 18 g–i Actaeon exilis Jeffreys, 1870 (p. 85). Actaeon exilis Jeffreys—Hidalgo 1917 (p. 114). Crenilabrum exilis ([Forbes] Jeffreys, 1870)— Nordsieck 1972 (p. 8, pl. O I, fig.). Lissactaeon exilis (Jeffreys) — Di Geronimo & Panetta 1973 (p. 89, pl. 1, fig. 13). Crenilabium exile (Jeffreys, 18970 ex Forbes ms.)— Smriglio & Mariottini 1996 (p. 187, figs. 8–9); Repetto et al. 2005 (p. 254, mid right fig.). Crenilabrum [sic] exile (Jeffreys, 1870) — Beck et al. 2006 (p. 92, top fig.). Diagnostic characters. Elongately oval, high-spired shell; drop-shaped aperture; markedly prosocyrt external lip; thin parietal callus; slightly twisted columella; curved growth lines; fine, slightly wavy spiral striation. Protoconch: heterostrophic, blunt; 1 visibile whorl; diameter about 690 µm; surface smooth; transition to the teleoconch marked by a narrow prosocline furrow. Remarks. Acteon nitidus Verrill, 1882 is currently regarded as a junior synonym of the present taxon (CLEMAM 2016). Occurrence. Box-corer samples BC04 (1 specimen), BC67 (1), BC72 (1); cores BC04 (2), BC05 (6), BC21 (3), BC51 (9), BC52 (1), BC72 (1). Maximum height: 6.5 mm. Distribution and habitat. Crenilabium exile is distributed from the northern Atlantic southward to the Caribbean and the Azores and throughout the Mediterranean, at bathyal depths (Jeffreys 1870; Nordsieck 1972; Poppe & Goto 1991; Di Geronimo et al. 2001; Galil 2004). Among the bathyal faunas of Taranto, it was ascribed to the Abra-Nucula biocoenosis (Di Geronimo & Panetta 1973). Fossil record. Pliocene of northern Italy (Tabanelli 2008).Published as part of Negri, Mauro Pietro & Corselli, Cesare, 2016, Bathyal Mollusca from the cold-water coral biotope of Santa Maria di Leuca (Apulian margin, southern Italy), pp. 1-97 in Zootaxa 4186 (1) on page 79, DOI: 10.11646/zootaxa.4186.1.1, http://zenodo.org/record/16528
FIG. 2. — Area A in Maerl-bed mapping and carbonate quantification on submerged terraces offshore the Cilento peninsula (Tyrrhenian Sea, Italy)
No full textFIG. 2. — Area A: A, bathymetric map with location of chirp sonar and multibeam tracklines: bold tracklines show the location of the VHR seismic profiles shown in Figure 6; B, histograms of elevations for the digital terrain model (DTM); C, slope map. Abbreviation: n, number of cells.Published as part of Savini, Alessandra, Basso, Daniela, Alice Bracchi, Valentina, Corselli, Cesare & Pennetta, Micla, 2012, Maerl-bed mapping and carbonate quantification on submerged terraces offshore the Cilento peninsula (Tyrrhenian Sea, Italy), pp. 77-98 in Geodiversitas 34 (1) on page 82, DOI: 10.5252/g2012n1a5, http://zenodo.org/record/459740
Tropidomya abbreviata Forbes 1843
No full textTropidomya abbreviata (Forbes, 1843) Fig. 10 l–n Neaera abbreviata Forbes, 1843 (p. 75). Neaera abbreviata Forbes—Jeffreys 1882 [a] (p. 943); Hidalgo 1917 (p. 493). Cuspidaria (Tropidomya) abbreviata (Forbes) — Tebble 1966 (p. 205, text-fig. 110). Tropidomya abbreviata (Forbes, 1843) — Nordsieck 1969 (p. 173, pl. 24, fig. 98.30); Oliver et al. 2016 (online resource). Cuspidaria abbreviata (Forbes, 1843) — Poppe & Goto 1993 (p. 139, pl. 26, fig. 7); Repetto et al. 2005 (p. 355, mid left fig). Cuspidaria (Tropidomya) abbreviata (Forbes, 1843) — Salas 1996 (p. 76, figs. 129–130). Diagnostic characters. Oval-trigonal shell; rather pointed beaks; short, rounded posterior rostrum; hinge with a very small cardinal tooth in each valve; single thin radial ridge from the beaks to the postero-ventral margin; shallow radial depression posterior to the ridge, corresponding to an internal strong fold. Prodissoconch: shell type ST-2D; length about 130 µm; slightly inequilateral (longer anteriorly), ellipsoidal outline; convex profile; P-1 surface with arcuate wrinkles in the cicatrix area; P-2 almost absent; transition to the nepioconch rather well marked. Occurrence. Box-corer samples BC71 (3 specimens), BC72 (26); core BC72 (2). Maximum length: 7 mm. Distribution and habitat. The species is distributed from northern Norway to Morocco and the Mediterranean, in the 460–1350 m depth interval (Nordsieck 1969; Buhl-Mortensen & Høisaeter 1993; Poppe & Goto 1993; Oliver et al. 2016). Fossil record. Pliocene of Sicily (Monterosato 1872).Published as part of Negri, Mauro Pietro & Corselli, Cesare, 2016, Bathyal Mollusca from the cold-water coral biotope of Santa Maria di Leuca (Apulian margin, southern Italy), pp. 1-97 in Zootaxa 4186 (1) on page 48, DOI: 10.11646/zootaxa.4186.1.1, http://zenodo.org/record/16528
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