Find research datasets worth reusing
Search datasets from major research repositories and use ShareScore to quickly assess how well each record supports discovery, access, and reuse.
1,088
datasets available to search
ShareScore release 0.7.1
Dataset results
1,088 results for “Bivalves”
FIGURE 10 in A new deepsea pectinid bivalve from thermal vents of Manus backarc Basin (southwestern Pacific), Sinepecten segonzaci n. gen., n. sp. (Pectinoidea: Pectinidae), and its relationships with the genera Bathypecten and Catillopecten
FIGURE 10. Coiling of dorsal edge of anterior auricle and of outer ligament insertion. Left: interior view of right valve anterior auricle (not exactly to scale: height of outer ligament insertion oversized). Right: proximal (A) and distal (B) sections of bivalve shell through anterior auricle. aa: anterior auricle; bn: byssal notch; h: hinge; lv: left valve; oli: outer ligament insertion; ri: resilium insertion (inner ligament); rv: right valve.
FIGURE 12 in A new deepsea pectinid bivalve from thermal vents of Manus backarc Basin (southwestern Pacific), Sinepecten segonzaci n. gen., n. sp. (Pectinoidea: Pectinidae), and its relationships with the genera Bathypecten and Catillopecten
FIGURE 12. Muscle insertions, microstructures exposed and hydrothermal venting influence on the internal shell surface of specimen 4. A: left valve; A': umbonopallial section; B: right valve; ai: adductor insertion; gsi: gill suspensor insertion; pmi: pallial muscle insertion; pri: pedal retractor insertion; ri: resilium insertion. 1: foliated calcite; 2: aragonitic middle shell layer; 3 to 5: myostracal aragonite, prismatic in adductor myostracum (3) and dorsal pallial muscle insertion (4), spherulitic in pallial line (5); 6: resilium fibrous aragonite.
FIGURE 9 in A new deepsea pectinid bivalve from thermal vents of Manus backarc Basin (southwestern Pacific), Sinepecten segonzaci n. gen., n. sp. (Pectinoidea: Pectinidae), and its relationships with the genera Bathypecten and Catillopecten
FIGURE 9. SEM views of specimens 2 (a,c) and 4 (b, d–f) of Sinepecten segonzaci. a: outer view of the anterodorsal region of the right valve; b: inner view of the anterodorsal part of the right valve; c: magnification of the outer layer of (a) near the ventral margin; d: calcite laths of the foliated structure; e: inner view of the beak region of the left valve (see Figure 12); f: hinge surface, magnification as in (d).
FIGURE 6 in A new deepsea pectinid bivalve from thermal vents of Manus backarc Basin (southwestern Pacific), Sinepecten segonzaci n. gen., n. sp. (Pectinoidea: Pectinidae), and its relationships with the genera Bathypecten and Catillopecten
FIGURE 6. Ontogeny of right valve anterior auricle and byssal notch. The specimens sp.2 to sp.6 (a) are laid flat. Byssal notch of sp.6 is hidden in (a); in (b) sp.6 is tilted forward to make it conspicuous. Behind the right valve, the left valve is present, umbonal part stippled, internal surface black. Horizontal lines: hollow of byssal fasciole.
FIGURE 3 in A new deepsea pectinid bivalve from thermal vents of Manus backarc Basin (southwestern Pacific), Sinepecten segonzaci n. gen., n. sp. (Pectinoidea: Pectinidae), and its relationships with the genera Bathypecten and Catillopecten
FIGURE 3. Parameters measured on shell of Sinepecten segonzaci n. gen., n. sp. a: view of bivalve shell from the right side; b: sagittal section trough bivalve shell; c: anterior auricle and byssal notch of the right valve. Interior surface of the left valve stippled. Arrow on (b) indicating hinge axis. APD: anteriorposterior diameter; DBN: depth of byssal notch; HAA: height of anterior auricle; LAA: length of anterior auricle: LV left valve; MC: maximal convexity; RV: right valve; TLA: total length of auricles; UPD: umbonopallial diameter (linear height).
FIGURE 8 in A new deepsea pectinid bivalve from thermal vents of Manus backarc Basin (southwestern Pacific), Sinepecten segonzaci n. gen., n. sp. (Pectinoidea: Pectinidae), and its relationships with the genera Bathypecten and Catillopecten
FIGURE 8. Juvenile paratypes of Sinepecten segonzaci. a: specimen 2, lower (right) side of the anterodorsal region; b: lower side of specimen 3 showing the marginal apron of the right valve (arrows).
FIGURE 2 in A new deepsea pectinid bivalve from thermal vents of Manus backarc Basin (southwestern Pacific), Sinepecten segonzaci n. gen., n. sp. (Pectinoidea: Pectinidae), and its relationships with the genera Bathypecten and Catillopecten
FIGURE 2. Morphological characters of juvenile shell (prismatic stage) of Sinepecten segonzaci n. gen., n. sp. External view of left (a) and right (c) valves, with sagittal section (b) through bivalve shell. aa: anterior auricle; bf: byssal fasciole; bn: byssal notch; bs: byssal sinus; cr: commarginal ridge; di: disk; lv: left valve; ma: marginal apron; pa: posterior auricle; rv: right valve; u: umbo; A: anterior side; D: dorsal side; P: posterior side; V: ventral side. Arrow on (b) indicating hinge axis.
FIGURE 14 in A new deepsea pectinid bivalve from thermal vents of Manus backarc Basin (southwestern Pacific), Sinepecten segonzaci n. gen., n. sp. (Pectinoidea: Pectinidae), and its relationships with the genera Bathypecten and Catillopecten
FIGURE 14. Biogeographical distribution of species belonging to Bathypecten, Catillopecten and Sinepecten. Stars indicate hydrothermal vent species. 1: B. eucymatus; 2: B. knudseni; 3: B. vulcani; 4: B. micaceus; 5: B. translucens; 6: C. graui; 7: C. murrayi; 8: C. sp.; 9: S. segonzaci.
FIGURE 4 in A new deepsea pectinid bivalve from thermal vents of Manus backarc Basin (southwestern Pacific), Sinepecten segonzaci n. gen., n. sp. (Pectinoidea: Pectinidae), and its relationships with the genera Bathypecten and Catillopecten
FIGURE 4. Holotype of Sinepecten segonzaci. a: upper (left) valve; b: lower (right) valve; c: dorsal region of the right valve showing the anterodorsal margin of the disk (black arrow) slightly overlapping the anterior auricle (aa). White arrow indicating a sharp growth line (see text).
FIGURE 5 in A new deepsea pectinid bivalve from thermal vents of Manus backarc Basin (southwestern Pacific), Sinepecten segonzaci n. gen., n. sp. (Pectinoidea: Pectinidae), and its relationships with the genera Bathypecten and Catillopecten
FIGURE 5. Life posture in Sinepecten segonzaci n. gen., n. sp. with byssal fixation compared in juveniles (sp. 2–4) and in the largest adult specimen (sp. 6), i.e. the holotype. a: parasagittal sections of bivalve specimens: tight byssal fixation fitting the lower (right) valve to the substrate; b: external view of anterodorsal region of shell underside. Inner surface of upper (left) valve (grey) appears behind byssal notch of lower valve; c: parasagittal section along xy showing byssus emerging from byssal notch. aa: anterior auricle; bf: byssal fasciole; bn: byssal notch; bs: byssal sinus. Arrows in (b) and (c) indicating relative growth direction of dorsal and ventral edges of byssal notch. On all figures, thick outline corresponding to lower (right) valve, coarse stipple to shell interior, and fine stipple to inner face of left valve.
FIGURE 7 in A new deepsea pectinid bivalve from thermal vents of Manus backarc Basin (southwestern Pacific), Sinepecten segonzaci n. gen., n. sp. (Pectinoidea: Pectinidae), and its relationships with the genera Bathypecten and Catillopecten
FIGURE 7. Right valve outline and prismatic calcite extent through ontogeny. The five specimens (2 to 6) are drawn at the same size to emphasize the change in outline from prismatic stage (dark grey) to adult. Extent of prismatic calcite on anterior auricle (AA) indicated only on sp.2.
FIGURES 34–45. Dilemma species. 34–40. Dilemma spectralis. Holotype, MNHN 20818 in A remarkable new genus of carnivorous, sessile bivalves (Mollusca: Anomalodesmata: Poromyidae) with descriptions of two new species
FIGURES 34–45. Dilemma species. 34–40. Dilemma spectralis. Holotype, MNHN 20818, whole specimen and shell views. 34–35. Whole specimen. 34. Posterior. 35. Anterior. Left valve is broken adjacent to byssal gape. 36. Right and left valves, lateral. 37. Ligament in posterodorsal view. 38. Detail of posteroventral shell surface showing periostracum with spicules. 39. Detail of anteroventral shell surface showing periostracum with worn spicules. 40. Right valve, ventral view of internal surface showing hinge. Scale bars: Figures 34–36 = 5 mm; Figures 37–40 = 1 mm. 41–45. Dilemma inexpectatum (Crozier, 1966). Holotype, NMNZ M.018488, left valve. 41–44. Valve views, from left to right: posterior, internal lateral, anterior, external lateral. 45. Detail showing cardinal-like tooth. Scale bars: Figures 41–44 = 5 mm; Figure 45 = 1 mm. Abbreviations: AAS = scar of anterior adductor muscle; BG = byssal gap; BGA = byssal gape (in mantle of broken shell); CT = cardinal-like tooth; ES = escutcheon; HS = hinge socket; IL = inner ligament layer; OL = outer ligament layer; SM = shell margin. Figures 41?44 courtesy Bruce Marshall, copyright Museum of New Zealand Te Papa Tongarewa.
FIGURES 30–33. Dilemma frumarkernorum. 30–32. Paratype 1. 30. Posterior, 31 in A remarkable new genus of carnivorous, sessile bivalves (Mollusca: Anomalodesmata: Poromyidae) with descriptions of two new species
FIGURES 30–33. Dilemma frumarkernorum. 30–32. Paratype 1. 30. Posterior, 31. anterior, and 32. right lateral views of animal removed from shell and submerged in fixative. Mantle lobes are intact in all three views. 33. Paratype 2. Animal in shell showing relaxed excurrent siphonal opening. Abbreviations: AA = anterior adductor muscle; BGA = byssal gape; BY = byssus; DD = digestive diverticula; ES = excurrent siphonal opening; F = foot; FM = fused mantle margin; IS = incurrent siphonal opening; ISC = infraseptal chamber; K = kidney; PA = posterior adductor muscle; PBR = posterior byssal retractor muscle; OV = ovary; SE = septum; SC = incurrent siphonal cowl; SSC = supraseptal chamber; ST = stomach; TN = tentacles (on siphonal area); TE = testis; UT = unpaired tentacle. Scale bar: Figures 30–32 = 5 mm.
FIGURES 3–24 in A remarkable new genus of carnivorous, sessile bivalves (Mollusca: Anomalodesmata: Poromyidae) with descriptions of two new species
FIGURES 3–24. Dilemma frumarkernorum. Views of shells. 3–8. Holotype, BMSM 15029. 3–5. Right valve. 3. Posterior. 4. Ve n tr a l. 5. Lateral (internal). 6–8. Left valve. 6. Anterior. 7. Dorsal. 8. Lateral. 9–14. Paratype 2, UF 416419. 9– 11. Right valve. 9. Posterior. 10. Ventral. 11. Lateral (internal). 12–14. Left valve. 12. Anterior. 13. Dorsal. 14. Lateral. 15–20. Paratype 1, USNM 1112670. 15–17. Right valve. 9. Posterior. 10. Ventral. 11. Lateral (internal). 18–20. Left valve. 18. Anterior. 19. Dorsal. 20. Lateral. 21–24. Paratype 4, Frank Frumar Collection, complete shell, partially open. 21. Ventral. 22. Dorsal. 23. Posterior. 24. Anterior. Scale bar (all images at same scale) = 10 mm.
FIGURES 1–2. Dilemma frumarkernorum. 1 in A remarkable new genus of carnivorous, sessile bivalves (Mollusca: Anomalodesmata: Poromyidae) with descriptions of two new species
FIGURES 1–2. Dilemma frumarkernorum. 1. Major muscle scars and anteroposterior shell axis. Axis defined by a line joining median points of the anterior and posterior adductors scars projected onto the sagittal shell plane (Allen, 1985). 2. Dimensional orientations. Abbreviations: AAS = scar of anterior adductor muscle; ABS = Anterior byssal retractor muscle scar seen by transparency, situated in umbonal cavity; APA = anteroposterior axis; H = height; L = length; LI = ligament; PAS = scar of posterior adductor muscle; PBS = scar of posterior byssal retractor muscle; W = width.
FIGURES 54–58. Dilemma species, reconstructed macroanatomy. 54–57. Dilemma spectralis. 54 in A remarkable new genus of carnivorous, sessile bivalves (Mollusca: Anomalodesmata: Poromyidae) with descriptions of two new species
FIGURES 54–58. Dilemma species, reconstructed macroanatomy. 54–57. Dilemma spectralis. 54. Left lateral view with part of mantle wall removed. 55. Detail of mantle cavity in left lateral view showing pair of internal tentacles along posterior edge of excurrent siphon. 56. Detail of mouth region showing labial palps. 57. Posterior region showing siphonal opening, tentacles, and stomach with prey item (a cirolanid isopod.). 58. Comparison of septal ostia in D. frumarkernorum (left) and D. spectralis (right). Posterior view, only left half of septum shown, with dorsal at top and not to scale. Scale bars: Figure 54 = 3 mm, Figure 55 = 2 mm, Figure 56 = 1 mm. Abbreviations: AA = anterior adductor muscle; ALP = anterior labial palps; ASO = anterior group of septal ostia; BO = byssal opening; BY = byssus; DD = digestive diverticula; ES = excurrent siphon; IS = incurrent siphonal opening; ISC = infraseptal chamber; IST = prey item in stomach (a cirolanid isopod); IT = internal tentacles; ITN = tentacles deployed ventrally to incurrent siphon; JTN= tentacles deployed alongside intersiphonal junction; K = kidney; MG = midgut; MO = mouth; MSO = median group of septal ostia; OE = esophagus; PA = posterior adductor muscle; PBR = posterior byssal retractor muscle; PLP = posterior labial palps; PSO = posterior group of septal ostia; OV = ovary; SE = septum; SC = incurrent siphonal cowl; SSC = supraseptal chamber; ST = stomach; UT = unpaired tentacle.
FIGURES 46–53 in A remarkable new genus of carnivorous, sessile bivalves (Mollusca: Anomalodesmata: Poromyidae) with descriptions of two new species
FIGURES 46–53. Dilemma spectralis. Holotype, gross anatomy, major organs and anatomical structures. 46. Posterior view. 47. Anterior view with anterior mantle wall removed. 48–49. Left lateral views. 48. With part of mantle wall removed. 49. Tilted 30º to allow viewing of fused mantle margins and some septal ostia. 50. Right lateral view with part of mantle wall removed. 51. Detail of right side of supraseptal chamber showing internal tentacles anterior to excurrent siphons. 52. Detail of right side of septum around byssal opening showing three groups of septal ostia. 53. Detail of mouth area showing labial palps. Note small posterior labial palps and position of foot extremity in relation to mouth. Scale bars: Figure 46 = 3 mm; Figures 51, 52 = 2 mm; Figure 53 = 1 mm. Abbreviations: AA = anterior adductor muscle; ALP = anterior labial palps; ASO = anterior group of septal ostia; BGA = byssal gape; BY = byssus; DD = digestive diverticula; ES = excurrent siphonal opening; F = foot; FM = fused mantle margin; IS = incurrent siphonal opening; ISC = infraseptal chamber; IT = internal tentacles; K = kidney; MO = mouth; MSO = median group of septal ostia; PA = posterior adductor muscle; PBR = posterior byssal retractor muscle; PE = periostracum; PLP = posterior labial palps; PSM = posterior septal muscle; PSO = posterior group of septal ostia; OV = ovary; SE = septum; SC = incurrent siphonal cowl; SSC = supraseptal chamber; ST = stomach (engorged by content, see Figure 57); UT = unpaired tentacle; TE = testis; TN = tentacles (on siphonal area).
FIGURES 25–29. Dilemma frumarkernorum. Shell hinge and ligament. 25–28. Paratype 2. 25 in A remarkable new genus of carnivorous, sessile bivalves (Mollusca: Anomalodesmata: Poromyidae) with descriptions of two new species
FIGURES 25–29. Dilemma frumarkernorum. Shell hinge and ligament. 25–28. Paratype 2. 25. Internal views of shell, SEM. Left valve on left side. 26. Hinge in posteroventral view, SEM. 27. Same view, optical photography. 28. Detail of right valve showing ligament. 29. Paratype 1. Attached valves in ventro-lateral view showing hinge with interlocking teeth and sockets. Scale bars: Figures 25–27, 29 = 2 mm; Figure 28 = 1 mm.
FIGURE 4 in Pinnotherotonia rumphiusi gen. et sp. nov., a new furry bivalve-associated pontoniine shrimp (Crustacea: Decapoda: Palaemonidae) from Palau
FIGURE 4. Pinnotherotonia rumphiusi gen. et sp. nov., holotype. A, B, mandible; C, same, distal margin of the incisor process; D, maxillula; E, same, palp; F, maxilla; G, first maxilliped; H, second maxilliped; I, third maxilliped. Scale = 1 mm.
FIGURE 3 in Pinnotherotonia rumphiusi gen. et sp. nov., a new furry bivalve-associated pontoniine shrimp (Crustacea: Decapoda: Palaemonidae) from Palau
FIGURE 3. Pinnotherotonia rumphiusi gen. et sp. nov., holotype. A, rostrum; B, telson and uropods; C, telson; D, same, distal margin; E, lateral margin of exopod of uropods; F, same, distolateral margin; G, H, antennule; I, J, antenna. Scale =1 mm.
ScienceDex guides
Understand access before you commit
These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.