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21 results for “Ostreoidea”
FIGURE 18 in Revision of the Bivalvia from the Upper Jurassic Reuchenette Formation, Northwest Switzerland—Ostreoidea
FIGURE 18. Praeexogyra monsbeliardensis (Contejean, 1859). 1–3. LV, MC-27E-139, paralectotype, Contejean Collection (Musée Cuvier in Montbéliard, France): 1, interior; 2, anterior; 3, lateral, with large attachment area; scale x1. 4. Juvenile LV, attached to Camptonectes auritus, FPJ Glov. 5.2.98 MB/3-60, Glovelier (Banné Marls, Lower Kimmeridgian).
FIGURE 19. Praeexogyra monsbeliardensis. 1–5 in Revision of the Bivalvia from the Upper Jurassic Reuchenette Formation, Northwest Switzerland—Ostreoidea
FIGURE 19. Praeexogyra monsbeliardensis. 1–5. Lectotype, MC-27-E-141 (designated herein): 1, refigured drawing of Contejean's (1859) fig. 1 of pl. 26; 2, RV lateral; 3, LV anterodorsal view; 4, LV, attachment area; 5, magnified portion of ventral margin, with antimarginal furrows; "Côte de Rôce" in Montbéliard, France, Lower Kimmeridgian, cymodoce Zone. Scale bars 10 mm (Figs. 1–3); 5 mm (Figs. 4–5).
FIGURE 17 in Revision of the Bivalvia from the Upper Jurassic Reuchenette Formation, Northwest Switzerland—Ostreoidea
FIGURE 17. Praeexogyra dubiensis (Contejean, 1859). 1–7. MC-27-E-112, lectotype, designated herein, Oxfordian, Bussurel near Montbéliard, France. 1. LV lateral, scanned from Contejean (1859, pl. 21, fig. 4); 2, LV interior, scanned from Contejean (1859, pl. 21, fig. 5); 3, LV lateral, with cylindrical attachment scar, probably from an algal stem; 4, interior; 5, dorsal view; 6, anterior view; 7, magnified portion of dorsal region. Scale bars 5 mm.
FIGURE 15. Helvetostrea n in Revision of the Bivalvia from the Upper Jurassic Reuchenette Formation, Northwest Switzerland—Ostreoidea
FIGURE 15. Helvetostrea n. gen. sequana (Thurmann & Etallon, 1862). 1. Lectotype, refigured from Thurmann & Etallon (1862, pl. 39, fig. 1); LV attached on other specimens of the same species, Bressaucourt near Chevenez (Canton Jura), Upper Oxfordian. 2–5. LV, CTD-SCR003-1237, Sur Combe Ronde (bed 2400), Upper Kimmeridgian, mutabilis Zone: 2, interior; 3, lateral; 4, ventral view into the umbonal cavity with cross-sectional shape of ligament area; 5, posterior side view, with distinct angle (52°) between commissure and ligament area. Scale bars 10 mm.
FIGURE 12 in Revision of the Bivalvia from the Upper Jurassic Reuchenette Formation, Northwest Switzerland—Ostreoidea
FIGURE 12. Nanogyra?(Palaeogyra) fourtaui (Stefanini, 1925), Antalo Limestone, Mekele Outlier of northern Ethiopia, Oxfordian. 1–5. Refigured after original photographs of Kiessling et al. 2011, determined as Nanogyra nana: 1, bivalved specimen, RV lateral (= Kiessling et al. 2011, text-fig. 13-I-left), PaleoDB 93860 (MB.M.8125.1); 2, same, LV (= text-fig. 13- I-right); 3, same, magnified portion of RV; 4, bivalved specimen, RV (= Kiessling et al. 2011, text-fig. 13-J-left), PaleoDB 93860 (MB.M.8125.2.); 5, same, LV (= text-fig. 13-J-right). Scale bars 2 mm and 5 mm.
FIGURE 11 in Revision of the Bivalvia from the Upper Jurassic Reuchenette Formation, Northwest Switzerland—Ostreoidea
FIGURE 11. Nanogyra (Nanogyra) auricularis (Münster in Goldfuss, 1833)(b) and N. (N.) rivelensis (de Loriol, 1904). 1–2. N. (N.) auricularis, Amberg, Hettangian, Lower Lias. 1. LV lateral, reversely? (mirrored) drawn original in Goldfuss (1833(b), pl. 79, fig. 7a). 2. RV lateral (original, pl. 79, fig. 7b). 3–8. Nanogyra (N.) rivelensis. 3–5. Ostrea striata Münster in Goldfuss, 1833(b) (pl. 80, figs. 7a–c), senior synonym. 3. RV lateral (pl. 80, fig. 7b), Streitberg, Germany, Oxfordian. 4. RV interior (pl. 80, fig. 7c). 5. LV lateral (pl. 80, fig. 7a). 6. "Ostrea" rivelensis; RV lateral, original figure in de Loriol (1904, pl. 25, fig. 11), Mont Rivel, Oxfordian. 7. N. (N.) rivelensis. RV lateral, FPJ 750, Vue des Alps, Canton Neuchâtel, Switzerland, antecedens Subzone, Middle Oxfordian. 8. RV interior, same as 7. All scale bars 10 mm.
FIGURE 9 in Revision of the Bivalvia from the Upper Jurassic Reuchenette Formation, Northwest Switzerland—Ostreoidea
FIGURE 9. Comparison of juvenile RVs of Gryphaea, Nanogyra, and Actinostreon. 1. Gryphaea ferruginea Terquem, 1855, Aalenian, Poland (redrawn after Pugaczewska 1971b, fig. 1). 2. Nanogyra (Palaeogyra) virgula (Deshayes, 1831), Upper Kimmeridgian, Switzerland. 3. Nanogyra (N.) nana (J. Sowerby, 1822), Lower Kimmeridgian, Switzerland. 4. Actinostreon marshii (J. Sowerby, 1814), Callovian, Lithuania.
FIGURE 8. Circunula n in Revision of the Bivalvia from the Upper Jurassic Reuchenette Formation, Northwest Switzerland—Ostreoidea
FIGURE 8. Circunula n. gen. cotyledon (Contejean, 1859). Group of juvenile LVs attached interior, of a bivalved Trichites (CGN-ALO009-1, largest oyster specimens labelled from I-IV, see also Fig. 6), close to its ventral margin; Alombre aux Vaches (Canton Jura), Lower Kimmeridgian, Banné Marls. Scale x1.5.
FIGURE 7. Circunula n in Revision of the Bivalvia from the Upper Jurassic Reuchenette Formation, Northwest Switzerland—Ostreoidea
FIGURE 7. Circunula n. gen. cotyledon (Contejean, 1859). Ontogeny of ligament area (schematic). 1. LV, juvenile with a triangular, initially alivincular-areate ligament. 2. Recurving of the umbo (hypothetic). 3. Continuation of opisthogyrate twisting, ligament becomes prosodetic and opisthocline, posterior bourrelet overgrown by projection of the posterodorsal hinge margin; observations based on a group of juveniles (ALO009-1-I-IV, Figs. 6, 8). Scale x5.
FIGURE 21 in Revision of the Bivalvia from the Upper Jurassic Reuchenette Formation, Northwest Switzerland—Ostreoidea
FIGURE 21.?Rastellum rusticum (Defrance, 1821). 1. RV, syntype of Defrance, Ostrea rustica Defrance, 1821, refigured from Bigot 1904, p. 72, fig. C1. 2. RV, syntype, refigured from Bigot 1904, p. 72, fig. C3; both from Gâprée, Basse-Normandie, France, Middle Callovian, Musée d' Histoire naturelle de Caen. 3–7. Specimens from Villers-sur-Mer, Calvados, France, Middle Oxfordian, FPJ collection: 3, bivalved specimen, RV, FPJ 5368a; 4, group of bivalved specimens and 2 juveniles, right specimen with prosogyrate umbo, FPJ 5370; 5–6, LV, FPJ 5369: 5, interior, with narrow, strongly curved ligament and collapsed chambers; 6, same, lateral; 7, LV, interior, with broad ligament, FPJ 5368b. Scale bars 10 mm.
FIGURE 6. Circunula n in Revision of the Bivalvia from the Upper Jurassic Reuchenette Formation, Northwest Switzerland—Ostreoidea
FIGURE 6. Circunula n. gen. cotyledon (Contejean, 1859). 1–3. Drawings of three juvenile specimens originally attached close together on a Trichites-shell (CGN-ALO009-1, see Fig. 8; Pl. 3.2–3), Alombre aux Vaches near Courgenay, Lower Kimmeridgian: 1, LV, umbo prosogyrate, ALO009-1-II; 2, LV, opisthogyrate, ALO009-1-I; 3, LV, opisthogyrate, ALO009-1- III. Scale x5.
FIGURE 16 in Revision of the Bivalvia from the Upper Jurassic Reuchenette Formation, Northwest Switzerland—Ostreoidea
FIGURE 16. Helvetostrea? caprina (Rollier, 1917) and H. oxfordiana (Rollier, 1917). 1. "Ostrea" caprina, refigured from Rollier (1917, pl. 39, fig. 2), LV, from Gösgen (Aargau), NE Switzerland (Geissberg Member, Late Oxfordian). 2–6.?Helvetostrea n. gen. caprina, same specimen as Fig. 16.1, here designated as lectotype, coll. ETHZ, Ve.S. 4563: 2, LV interior, hinge area poorly drawn in the original figure (compare Fig. 16.1); 3, LV, lateral; 4, RV, interior; 5, RV, lateral; ETH Zürich, photos by Dr. Pika-Biolzi (Zürich), specimen not whitened; 6. Lectotype, anterolateral (both valves re-articulated), refigured from Rollier (1917, pl. 40, fig. 2b). 7–9. Helvetostrea oxfordiana. Figured bivalved type specimen of Ostrea oxfordiana, cf. Rollier 1917, pl. 40, fig. 1a–c, ETHZ Ve.S. 5146, Klein-Kembs (Kleinkems) near Lörrach (Baden- Württemberg), Germany ("Terrain à Chailles", Lower Oxfordian, Cardioceras cordatum Zone: 7, LV, interior; 8, LV ventral view; 9, RV lateral. Scale bars 10 mm.
FIGURE 5. Circunula n in Revision of the Bivalvia from the Upper Jurassic Reuchenette Formation, Northwest Switzerland—Ostreoidea
FIGURE 5. Circunula n. gen. cotyledon (Contejean, 1859). 1–4. Lectotype: 1, idealized drawing of a bivalved specimen, refigured from Contejean (1859, pl. 24, fig. 15), MC 27E-105, Rôce in Montbéliard, Lower Kimmeridgian; 2, anteroventral view of LV attached on a Trichites fragment (refigured from Contejean 1859, pl. 24, fig. 16); 3, external view of RV (with attached paralectotype, revealed during preparation); 4, anteroventral view. 5–6. Paralectotype, small LV (MC 27E-105a), attached on lectotype: 5, interior view; 6, prosodetic ligament area. 7. Paralectotype, RV interior, with opisthodetic ligament area, MC 27E-104, same locality and age as the lectotype. 8–9. Paralectotype, MC 27E-108, Arbouans near Montbéliard, France, Upper Oxfordian; 8, thick-shelled LV, idealized drawing refigured from Contejean (1859, pl. 24, fig. 17); 9, same LV, interior view. Scale bars 5 mm and 10 mm.
FIGURE 14. Helvetostrea n in Revision of the Bivalvia from the Upper Jurassic Reuchenette Formation, Northwest Switzerland—Ostreoidea
FIGURE 14. Helvetostrea n. gen. sequana (Thurmann & Etallon, 1862). Specimens attached to each other (Pl. 11.1a–d), CTD- TCH002-306, Tchâfouè near Courtedoux, Upper Kimmeridgian, mutabilis Zone: 1, LV, interior (306a); 2, same LV, anterior view; 3, RV (306b), served as settling object for LV of Fig. 14.1; scale x1; 4, juvenile LV (306c), posteriorly attached to LV (306a).
FIGURE 2 in Revision of the Bivalvia from the Upper Jurassic Reuchenette Formation, Northwest Switzerland—Ostreoidea
FIGURE 2. Geological setting of the Jura arc and the position of the Ajoie, Northwest Switzerland. Modified after Braillard (2006b) and Marty (2008).
FIGURE 3 in Revision of the Bivalvia from the Upper Jurassic Reuchenette Formation, Northwest Switzerland—Ostreoidea
FIGURE 3. Map of locations in northwestern Switzerland and adjacent areas in France (region of Montbéliard). 1–9. Excavation sites of the Paléontologie A16 on the Transjurane highway (A 16) and nearby situated outcrops (Ajoie, Canton Jura, Switzerland): 1, Courtedoux–Vâ Tche Tchâ (CTD-VTT); 2, Courtedoux–Bois de Sylleux (CTD-BSY); 3, Courtedoux–Tchâfouè (CTD-TCH); 4, Courtedoux–Sur Combe Ronde (CTD-SCR); 5, Chevenez–La Scierie (CHE-CHS); 6, Porrentruy–Tunnel du Banné (POR-TLB, same position as the Banné hill); 7, Porrentruy–Cras d'Hermont (POR-CRA); 8, Courgenay–Alombre aux Vaches (CGN-ALO); 9, Boncourt–Queue au Loup (BON-QLP). 10–14. Localities of Contejean (1859) in the area of Montbéliard (Franche-Comté, France): 10, Bussurel close to Héricourt (Department Haute-Saône); 11, Beauregard near Châtenois-les-Forges (Department Territoire de Belfort); 12, Rôce in Sainte-Suzanne, Montbéliard (department Doubs); 13, Arbouans (Department Doubs); 14, La Baume in Audincourt (Department Doubs). 15–17. Swiss localities for compared material: 15, Glovelier (Canton Jura); 16, Liesberg, clay pit Andil (Canton of Basel-Country); 17, Blauen (Canton of Basel-Country).
FIGURE 4 in Revision of the Bivalvia from the Upper Jurassic Reuchenette Formation, Northwest Switzerland—Ostreoidea
FIGURE 4. Litho- and biostratigraphy of the observed parts of the Reuchenette Formation in the Ajoie, with distribution of oysters and characteristic fossils. A. Synthetic section. B. Detailed section of the Banné Member in Vâ Tche Tchâ (VTT), Lower Kimmeridgian. C. Detailed section of the upper part of the Courtedoux Member and "Lower Virgula Marl"; based on Tchâfouè (TCH) and Sur Combe Ronde (SCR), Upper Kimmeridgian (note separate bed numeration for VTT and SCR/TCH).
FIGURE 10 in Revision of the Bivalvia from the Upper Jurassic Reuchenette Formation, Northwest Switzerland—Ostreoidea
FIGURE 10. Nanogyra (Nanogyra) nana (J. Sowerby, 1822). 1, LV, interior, VTT001-3214; scale x2. 2–3. Articulated valves, VTT001-3210; scale x3: 2, LV, RV lateral; 3, LV lateral, posterior xenomorphic; Vâ Tche Tchâ, Banné Marls, Lower Kimmeridgian.
FIGURE 1 in Revision of the Bivalvia from the Upper Jurassic Reuchenette Formation, Northwest Switzerland—Ostreoidea
FIGURE 1. Paleogeography of the Jura carbonate platform in the Kimmeridgian (Upper Jurassic). Modified after Marty (2008); Thierry et al. (2000) and Thierry & Barrier et al. (2000).
FIGURE 13 in Revision of the Bivalvia from the Upper Jurassic Reuchenette Formation, Northwest Switzerland—Ostreoidea
FIGURE 13. Nanogyra (Palaeogyra) reniformis (Goldfuss, 1833)(b) and N. (P.) virgula (Deshayes, 1831). 1–2. N. (P.) reniformis: 1, juvenile LV, interior, VTT009-33a; 2, juvenile bivalved specimen, VTT009-33b (Pl. 7.2a–b); Banné Marls of Vâ Tche Tchâ near Courtedoux, Switzerland, Lower Kimmeridgian; scale x5. 3–4. N. (P.) virgula, bivalved specimen; 3, RV, BSY009-915; 4, same, LV; "Lower Virgula Marls", Bois de Sylleux near Courtedoux, Switzerland, Upper Kimmeridgian.
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