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19 results for “Protobranchia”
Fig. 32. Protobranchia 2. A–B in The Mollusca of Galicia Bank (NE Atlantic Ocean)
Fig. 32. Protobranchia 2. A–B. Ledella messanensis (Jeffreys, 1870), BANGAL 0711, V10, 1720 m, 5.8 mm. C–D. Ledella cf. orixa (Dall, 1927), BANGAL 0711, V5, 1631 m, 2.0 mm. E–F. Syntype (USNM 108190) of Leda orixa Dall, 1927, off Georgia 30.975°N, 79.6417°W, 538 m, R/V Albatross, 3.6 mm (photograph by Ellen Strong, reproduced with the permission of the National Museum of Natural History, Smithsonian Institution, 10th and Constitution Ave. N.W., Washington, DC 20560-0193 http://www.nmnh.si.edu/). G–H. Yoldiella semistriata (Jeffreys, 1879), BANGAL 0711, V2, 1706 m, 3.2 mm. I–J. Yoldiella valorousae Killeen & J.A. Turner, 2009, BANGAL 0711, V2, 1706 m, 3.0 mm. Scale bars = 1 mm.
Fig. 31. Protobranchia 1. A–B. Nucula tumidula Malm, 1861, BANGAL 0711, V5, 1631 m, 5.5 and 5.4 in The Mollusca of Galicia Bank (NE Atlantic Ocean)
Fig. 31. Protobranchia 1. A–B. Nucula tumidula Malm, 1861, BANGAL 0711, V5, 1631 m, 5.5 and 5.4 mm.C–D. Nucula atacellana Schenck, 1939, BANGAL 0711, V10, 1720 m, 3.5 mm. E–F. Ennucula corbuloides (Seguenza, 1877), BANGAL 0711, V2, 1706 m, 3.2 mm. G–H. Tindaria sericea (Jeffreys, 1876), BANGAL 0711, V2, 4.7 mm. I. Tindaria sericea, BANGAL 0711, V5, 4.5 mm. J–K. Pristigloma minima (Seguenza, 1877), SEAMOUNT 1, DW111, 675–685 m, 1.7 mm. Scale bars = 1 mm.
FIGURE 7 in The genera that never were: The impact of Janeia and Janacekia on phyletic and taxonomic relations within the Solemyidae (Bivalvia: Protobranchia)
FIGURE 7. Interpretations of a transverse section through the beak of Janeia truncata, Middle Devonian of Gerolstein as figured by Quenstedt (1930, pl. 1, fig. 4) and reproduced in the Treatise by Cox (1969, N242, fig. B1,1b). A, Quenstedt's original ink sketch, a left valve, showing nymph-like ossicle (arrow) alleged to be a chondrophore for attachment of an internal ligament. B, inferred transverse section of right valve. C, incompatibility of right and left valves when fitted together with closed dorsal margins. As shown, the ossicle and its inferred counterpart irreconcilably overlap (arrow). D, a workable solution achieved by addition of an internymphal gap (arrow) separating the valves posterodorsally. By inference, the ossicles functioned as nymphae supporting an external ligament (stippled pattern, here reconstructed). E, Quenstedt's (1930, pl. 1, fig. 5) diagrammatic reconstruction of Janeia truncata based on the internal mold of a left valve figured by Beushausen (1895, pl. 26, fig. 5). For clarification, arrows and explanatory labels are added here.
FIGURE 4 in The genera that never were: The impact of Janeia and Janacekia on phyletic and taxonomic relations within the Solemyidae (Bivalvia: Protobranchia)
FIGURE 4. Phyletic schemes and biostratigraphic ranges (solid bars) of Paleozoic solemyoid genera. A, phyletic scheme of Pojeta (1988, fig. 3) postulating derivation of the Clinopisthinae and Solemyinae from nuculoid ancestors (i.e., Ctenodonta). B, proposed modifications (in red) of Pojeta's scheme based on studies herein. Abbreviations of generic names: A. = Acharax; Cl. = Clinopistha; Ct. = Ctenodonta; D. = Dystactella; 'J.' = Janeia; and M. = Manzanella.
FIGURE 6 in The genera that never were: The impact of Janeia and Janacekia on phyletic and taxonomic relations within the Solemyidae (Bivalvia: Protobranchia)
FIGURE 6 (caption on next page).
FIGURE 2. Nucinella boucheti n in A gigantic deepsea Nucinellidae from the tropical West Pacific (Bivalvia: Protobranchia)
FIGURE 2. Nucinella boucheti n.sp. A, B. Holotype, height 24 mm. C, D. Paratype 1, height 18 mm. E. Paratype 2, height 21 mm. F. Paratype 3, height 20 mm. G. Paratype 4, height 15 mm.
FIGURE 3. Nucinella boucheti n in A gigantic deepsea Nucinellidae from the tropical West Pacific (Bivalvia: Protobranchia)
FIGURE 3. Nucinella boucheti n.sp. A–C. Holotype, A. hinge (arrow: ligament pit), B. posterior teeth, C. anterior teeth. D, E. Paratype 2, hinge. F, G. Paratype 4, hinge. H. Paratype 3, ligament (arrows: periostracum). Scale bars: 1 mm.
FIGURE 8 in How features of the hinge plate aid in discriminating among three Yoldiella (Pelecypoda, Protobranchia) species from the Campos Basin, Brazil
FIGURE 8. Discriminant analysis of three taxa using combined shell shape and hinge plate morphometric data. Df, discriminant function.
FIGURE 7 in How features of the hinge plate aid in discriminating among three Yoldiella (Pelecypoda, Protobranchia) species from the Campos Basin, Brazil
FIGURE 7. Discriminant analysis of three taxa using overall shell shape morphometric data. Df, discriminant function.
FIGURE 2 in How features of the hinge plate aid in discriminating among three Yoldiella (Pelecypoda, Protobranchia) species from the Campos Basin, Brazil
FIGURE 2. Shell shape measurements used: total length (L); height (H); dorsal height (DH); ventral height (VH); antero-dorsal margin length (lam); postero-dorsal margin length (lpm); center to margin lengths (R1, R2, R3, and R4).
FIGURE 6 in How features of the hinge plate aid in discriminating among three Yoldiella (Pelecypoda, Protobranchia) species from the Campos Basin, Brazil
FIGURE 6. Schematic position of teeth in the hinge plate. Teeth anterior and posterior to the umbo are considered as separate series, with tooth 1 in each series positioned closest to the margin1.
FIGURE 1 in How features of the hinge plate aid in discriminating among three Yoldiella (Pelecypoda, Protobranchia) species from the Campos Basin, Brazil
FIGURE 1. Yoldiella species used for morphometric analyses. Yoldiella sp.1: a—external and internal views (MNRJ 15200), b—dorsal view (IBUFRJ18756). Yoldiella sp.2: c—external view (MOFURG 50903) and internal view (MNRJ 15201), d— dorsal view (IBUFRJ 18748). Yoldiella aff. jeffreysi (Hidalgo, 1877): e—external view (IBUFRJ 18646) and internal view (IBUFRJ 18623), f—dorsal view (IBUFRJ 18646). Scale bars = 1mm (Fig 1), 400 µm (Figs 3,5 and 6), 300 µm (Fig 4), 200 µm (Fig 2).
FIGURES 4–5. Dorsal view hinge plate measurements. 4 in How features of the hinge plate aid in discriminating among three Yoldiella (Pelecypoda, Protobranchia) species from the Campos Basin, Brazil
FIGURES 4–5. Dorsal view hinge plate measurements. 4—total length of the hinge plate (lhp); length between the center of the higher teeth of the anterior and posterior hinge plates to the umbo (alu and plu) and to the respective margins (alm and plm). 5—dorsal length of the anterior and posterior hinge plates (dahp and dphp); height of the higher teeth of the anterior and posterior hinge plates (hat and hpt) and width of a valve W.
FIGURE 3 in How features of the hinge plate aid in discriminating among three Yoldiella (Pelecypoda, Protobranchia) species from the Campos Basin, Brazil
FIGURE 3. Hinge measurements used—internal view of the hinge plate: length of the anterior and posterior hinge plates (ahp and php); width of the anterior hinge plate and teeth (wap and wat); width of the posterior hinge plate and teeth (wpp and wpt).
FIGURE 1 in A gigantic deepsea Nucinellidae from the tropical West Pacific (Bivalvia: Protobranchia)
FIGURE 1. Location of the MUSORSTOM 2 station CP 42.
FIGURE 1 in The genera that never were: The impact of Janeia and Janacekia on phyletic and taxonomic relations within the Solemyidae (Bivalvia: Protobranchia)
FIGURE 1. Diagrammatic transverse sections comparing the posterior portion of the ligament and nymphae of Acharax and Solemya. A, the upward-arching (parivincular) external ligament and nymphae, i.e., the plesiomorphic condition as seen in Acharax. (Drawing based on Carter, 1990, fig. 17D; Bailey, 2011, pl. 4, figs. 4-6; and Taviani et al., 2011, fig. 5). B, external nymphae of Acharax with the ligament removed. When the ligament is not preserved, the nymphae are visibly separated by an internymphal gap. C, hypothetical intermediate condition showing beginning stages of ligament depression and inward rotation of nymphae (arrows). D, submarginal ligament and nymphae - the apomorphic condition seen in Solemya. The depressed ligament is secondarily overgrown by a shelly outer prismatic layer. (After Carter, 1990, fig. 17A.) E, the submarginal nymphae of Solemya with the ligament removed. Notice the outer secondary layer that covers the former internymphal gap. Abbreviations: ne - external nymph, ns - submarginal nymph gr - ligament insertion groove, ig - internymphal gap, lgf - fibrous inner layer of ligament, lgl - lamellar outer layer of ligament, pe - periostracum, opl - outer (secondary) prismatic shell layer.
FIGURE 2 in The genera that never were: The impact of Janeia and Janacekia on phyletic and taxonomic relations within the Solemyidae (Bivalvia: Protobranchia)
FIGURE 2. Comparative internal views of the posterior portion of the right valves of Acharax (A) and Solemya (B) showing character states of the nymphae, internal buttresses and posterior adductor scars. In Acharax the nymph (ne) is external, the condition of the internal buttress is simple (bts), and the condition of the posterior adductor muscle scar is entire (pae). In Solemya, depression of the nymph to a submarginal position (ns) results in a compound buttress (btc) and an occluded posterior adductor scar (pao).
FIGURE 5 in The genera that never were: The impact of Janeia and Janacekia on phyletic and taxonomic relations within the Solemyidae (Bivalvia: Protobranchia)
FIGURE 5 (caption on next page).
FIGURE 9 in How features of the hinge plate aid in discriminating among three Yoldiella (Pelecypoda, Protobranchia) species from the Campos Basin, Brazil
FIGURE 9. Discriminant analysis of three taxa using only hinge plate morphometric data. Df, discriminant function.
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Allen Brain Atlas
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DANDI Archive for NWB datasets
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International Brain Laboratory public data
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OpenNeuro
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