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    FIG. 6. — Rhyncolites sagittarius n in Description des rhyncholites des Nautiles (Mollusca, Cephalopoda) du Paléogène des bassins de Paris et d'Aquitaine et des Corbières (France)

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    FIG. 6. — Rhyncolites sagittarius n. sp.: A-C, holotype, MNHN A27220 (leg. Pacaud), Chaumont-en-Vexin, Oise; D-F, paratype nº 1, MNHN A27221 (leg. Pacaud), Chaumont-en-Vexin, Oise; G-I, paratype nº 2 (coll. Dordonat, copie MNHN A27279), Chaumont-en- Vexin, Oise; J, K, paratype nº 3, MNHN A27438 (leg. Pattedoie), Cauvigny (Oise); L, paratype nº 4, MNHN A27222 (leg. Dutheil), Breuil (Eure). Échelles: 10 mm.Published as part of Pacaud, Jean-Michel, 2010, Description des rhyncholites des Nautiles (Mollusca, Cephalopoda) du Paléogène des bassins de Paris et d'Aquitaine et des Corbières (France), pp. 121-156 in Geodiversitas 32 (1) on page 135, DOI: 10.5252/g2010n1a4, http://zenodo.org/record/468826

    FIG. 11. — A-F, Rhyncolites lhommei n in Description des rhyncholites des Nautiles (Mollusca, Cephalopoda) du Paléogène des bassins de Paris et d'Aquitaine et des Corbières (France)

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    FIG. 11. — A-F, Rhyncolites lhommei n. sp.; A-C, holotype, MNHN A27223 (leg. Lhomme), Champagne-sur-Oise (Val d'Oise); D-F, paratype, MNHN A27224 (leg. Lhomme), Champagne-sur-Oise (Val d'Oise); G-I, Rhyncolites erroitegiensis n. sp., holotype MNHN A27257 (leg. Vizcaino), Roitegui, Arraia-Maeztu, Espagne; J-L, Rhyncolites dutemplei (d'Orbigny, 1847), holotype MNHN B16881 (coll. d'Orbigny), Chavot, Marne. Échelles: A-F, 5 mm; G-L, 10 mm.Published as part of Pacaud, Jean-Michel, 2010, Description des rhyncholites des Nautiles (Mollusca, Cephalopoda) du Paléogène des bassins de Paris et d'Aquitaine et des Corbières (France), pp. 121-156 in Geodiversitas 32 (1) on page 145, DOI: 10.5252/g2010n1a4, http://zenodo.org/record/468826

    FIG. 3. — Terebellomimus quaggiottoi n in Terebellomimus quaggiottoi n. gen., n. sp. (Mollusca, Gastropoda, Littorinimorpha, Rostellariidae) du Lutétien inférieur (Éocène moyen) du Vicentin (Italie)

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    FIG. 3. — Terebellomimus quaggiottoi n. sp., Lutétien inférieur (Éocène moyen) de Cava Albanello di Nogarole Vicentino, Vicenza (Vicentin, Italie): A, B, holotype (MGPD 29741 leg. Quaggiotto); C, D, paratype (coll. Quaggiotto); E, F, paratype (MNHN A26056,Published as part of Pacaud, Jean-Michel, 2008, Geodiversitas 30 (4) on pages 721-729, DOI: 10.5281/zenodo.466560

    FIG. 5. — A-C in New species of Eocithara Fischer, 1883 (Mollusca, Gastropoda, Harpidae) from the Early Paleogene with phylogenetic analysis of the Harpidae

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    FIG. 5. — A-C, Eocithara (s.s.) eucosmia n. sp., paratypes, MNHN R63434 et R63435 (Pacaud coll.), Bois-Gouët, Saffré, Loire- Atlantique, France, Bartonian; D-E, E. (s.s.) rosenkrantzi n. sp., holotype, MGUH 15818 (copy MNHN R63692), Sonja Lens, East of Turritellakløft, Nuussuaq Peninsula, West Greenland, Thanetian (Agatdal Formation); F, E. (s.s.) sp. 1, MNHN J05430 (Cossmann coll.), Coustouge, Aude, France, lower Ypresian; G-H, Eocithara (s.s.) sp. 2, MNHN R63432 and R63433 (Courtessolle-Griffe coll.), Les Capitelles, North of Aragon, Aude, France, lower Ypresian. Scale bars: A-E, 5 mm; F-H, 10 mm.Published as part of Merle, Didier & Pacaud, Jean-Michel, 2004, New species of Eocithara Fischer, 1883 (Mollusca, Gastropoda, Harpidae) from the Early Paleogene with phylogenetic analysis of the Harpidae, pp. 61-87 in Geodiversitas 26 (1) on page 71, DOI: 10.5281/zenodo.537618

    FIG. 5. — A- C in First fossil records of the Recent Ovulid genus Pseudocypraea Schilder, 1927 (Mollusca, Gastropoda) with description of a new species

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    FIG. 5. — A- C, Pseudocypraea adamsonii (Sowerby, 1832) of Huahine Island (Polynésie) (MNHN-DSE) (leg. L. Dolin); D-F, Pseudocypraea exquisita Petuch, 1979 of Bohol Island (Philippines) (MNHN-DSE) (leg. L. Dolin). Scale bar: 5 mm.Published as part of Pacaud, J. - M., 2003, First fossil records of the Recent Ovulid genus Pseudocypraea Schilder, 1927 (Mollusca, Gastropoda) with description of a new species, pp. 451-462 in Geodiversitas 25 (3) on page 459, DOI: 10.5281/zenodo.537530

    FIG. 22. — Leptomaria meyeri n in Révision des mollusques du Danien (Paléocène inférieur) du Bassin de Paris. 1. Gastropoda: Patellogastropoda et Vetigastropoda (pro parte)

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    FIG. 22. — Leptomaria meyeri n. sp., Montainville, Yvelines; A, B, holotype, MNHN R63509 (coll. Meyer), la flèche montre la sélénizone; C, D, paratype, MNHN R63510 (coll. Meyer); E, moulage en cire réalisé par d'Orbigny, paratype, MNHN R64050 (coll. d'Orbigny); F, paratype, MNHN R63501 (coll. Meyer). A-D, F, moulages en élastomère de silicone d'empreintes externes. Échelles: 10 mm.Published as part of Pacaud, Jean-Michel, 2004, Révision des mollusques du Danien (Paléocène inférieur) du Bassin de Paris. 1. Gastropoda: Patellogastropoda et Vetigastropoda (pro parte), pp. 577-629 in Geodiversitas 26 (4) on page 621, DOI: 10.5281/zenodo.466525

    FIG. 4. — A, B in Révision des mollusques du Danien (Paléocène inférieur) du Bassin de Paris. 1. Gastropoda: Patellogastropoda et Vetigastropoda (pro parte)

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    FIG. 4. — A, B, Acmaea simplex (Briart & Cornet, 1887), MNHN R63523 (coll. Meyer), Vigny, Val-d'Oise; C, D, Scurriopsis deretrana n. sp., holotype, MNHN R63291 (coll. Meyer), Vigny, Val-d'Oise; E, F, Scurria dysporista n. sp., holotype, MNHN R63352 (coll. Meyer), Vigny, Val-d'Oise. Moulages en élastomère de silicone d'empreintes externes. Échelles: A, B, E, F, 2 mm; C, D, 5 mm.Published as part of Pacaud, Jean-Michel, 2004, Révision des mollusques du Danien (Paléocène inférieur) du Bassin de Paris. 1. Gastropoda: Patellogastropoda et Vetigastropoda (pro parte), pp. 577-629 in Geodiversitas 26 (4) on page 587, DOI: 10.5281/zenodo.466525

    FIG. 10. — A-D in Contribution des motifs colorés résiduels dans la discrimination d'espèces nouvelles de Cryptochorda Mörch 1858 Mollusca: Gastropoda: Harpidae de l'Éocène du bassin de Paris et du Cotentin

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    FIG. 10. — A-D, Cryptochorda (s.str.) pyrenaicensis Cossmann, 1923. Cuisien (Yprésien) dela Tuilerie, Gan (Pyrénées-Atlantiques). A, MNHN.F.J10882 (coll. O'Gorman), H.: 24,9 mm; B, MNHN.F.A71481 (coll. O'Gorman), H.: 25,7 mm; C, MNHN.F.A57359 (coll. Pacaud), H.: 34,2 mm – Protoconque; D, MNHN.F.J14638 (coll. Cossmann), H.: 37,2 mm. E-G, Cryptochorda (s.str.) teae n. sp. Cuisien (Yprésien) de Cava Rossi, Monte di Malo (Vicenza, Italie). E, Holotype MGP-PD 31931 (coll. Quaggiotto), H.: 40,2 mm; F, Paratypes MCZ 5761 (coll. Checchi), H.: 37,6 mm; G, MCZ 5762 (coll. Checchi), H.: 38,4 mm. Échelle: C3, 2 mm.Published as part of Pacaud, Jean-Michel & Sautereau, Frédéric, 2020, Contribution des motifs colorés résiduels dans la discrimination d'espèces nouvelles de Cryptochorda Mörch 1858 Mollusca: Gastropoda: Harpidae de l'Éocène du bassin de Paris et du Cotentin, pp. 559-595 in Geodiversitas 42 (29) on page 577, DOI: 10.5252/geodiversitas2020v42a29, http://zenodo.org/record/444789

    Paraseraphs praecedens Caze, Merle, Pacaud

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    Paraseraphs praecedens Caze, Merle, Pacaud & Saint Martin, 2010 Figure 7F 2010 Paraseraphs praecedens Caze et al., p. 460, figs. 29E, F. Type material. Holotype — MNHN A05707. The type measures 19 mm in length, with a width of 7 mm (Caze et al. 2010). Type locality. Abbencourt, France [Thanetian]. Diagnosis. The shell is small and smooth, with a distinct suture and a short blunt teleoconch. The aperture is narrow and long. Distribution. PALEOCENE—Thanetian— France Abbecourt, Oise (Caze et al. 2010). Remarks. This taxon is the oldest member of Paraseraphs and the smallest of the genus.Published as part of Maxwell, Stephen J., Rymer, Tasmin L. & Congdon, Bradley C., 2021, Resolving phylogenetic and classical nomenclature: A revision of Seraphsidae Jung, 1974 (Gastropoda: Neostromboidae), pp. 401-453 in Zootaxa 4990 (3) on page 430, DOI: 10.11646/zootaxa.4990.3.1, http://zenodo.org/record/502677

    De-embedding of filters in multiplexers via rational approximation and interpolation

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    In this article, we present a method to recover electrical parameters of filters embedded in a multiplexer for which scattering measurements are given. Unlike other approaches proposed for this problem, this method does not require a priori knowledge of the scattering parameters of the junction. This feature renders the procedure well suited for tuning purposes or for fault diagnosis. Technically, the algorithm starts with a rational approximation step, to derive a rational representation of certain scattering parameters of the multiplexer. This representation is then used in a second step to identify an electrical model of each filter. This second step relies on a rational interpolation technique used to extract the filter's responses
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