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10 results for “Provannidae”
Figure 1 in Provannid and provannid-like gastropods from the Late Cretaceous cold seeps of Hokkaido (Japan) and the fossil record of the Provannidae (Gastropoda: Abyssochrysoidea)
Figure 1. Sketch map of the provannid-bearing localities discussed in the text. A, Nakagawa area. B, Tappu area. C, Hokkaido of Japan with Cretaceous Yezo fore-arc basin deposits indicated.
Figure 4 in Provannid and provannid-like gastropods from the Late Cretaceous cold seeps of Hokkaido (Japan) and the fossil record of the Provannidae (Gastropoda: Abyssochrysoidea)
Figure 4. Juvenile Recent Provannidae and Abyssochrysidae (A–D) and patterns of shell decolation and preservation (E–F). A, E, Desbruyeresia spinosa Warén & Bouchet, 1993 from North Fiji Basin (specimen illustrated also in Warén & Bouchet, 1993: fig. 44D). A, decollate protoconch; E, details of decollation; note no signs of shell abrasion on the protoconch edges B, decollated protoconch of Alviniconcha hessleri Okutani & Ohta, 1988 from north Fiji Basin (specimen illustrated also in Warén & Bouchet, 1993: fig. 44C). C, paucispiral protoconch of Provanna segonzaci Warén & Ponder, 1991 from Lau Basin. D, Abyssochrysos sp. from off New Caledonia; note axial ribs and spiral riblets at the beginning of paucispiral protoconch. F, decollation pattern of terrestrial gastropod Rumina decollata Linné, 1758. G, typical pattern of in-vivo apex erosion in Phymorhynchus sp. shell from the Lucky Strike site on the Mid-Atlantic Ridge; note shell surface abrasion but no sign of decollation.
Figure 7 from: Betters MJ, Cordes EE (2024) New records of Provanna (Gastropoda, Provannidae) from the Costa Rica Margin and an identification key for the genus. ZooKeys 1189: 1-32. https://doi.org/10.3897/zookeys.1189.109734
Figure 7 Bayesian topology of Abyssochrysoid gastropod mollusks A topology based on a 449 bp region of the mitochondrial CO1 gene. Topology was inferred using the HKY+G+I substitution model B topology based on a 266 bp region of the nuclear H3 gene. Novel sequences are bolded and highlighted in yellow. Numbers above branch nodes represent Bayesian posterior probabilities. Numbers below branch nodes represent the proportion of replicate trees in which the associated taxa clustered together in the bootstrap test (10,000 replicates). Only values above 50% are shown. The tree is drawn to scale, with branch lengths representing the number of base substitutions accumulated over time.
Figure 5 from: Betters MJ, Cordes EE (2024) New records of Provanna (Gastropoda, Provannidae) from the Costa Rica Margin and an identification key for the genus. ZooKeys 1189: 1-32. https://doi.org/10.3897/zookeys.1189.109734
Figure 5 Representative radulae of Costa Rican Provanna species AP. laevis from mussel shells BP. laevis from unknown substrate CP. ios from mussel shells DP. ios from unknown substrate E, FP. pacifica from wood. Scale bars: 20 µm (F); 30 µm (E); 40 µm (C); 50 µm (A, B, D).
Figure 4 from: Betters MJ, Cordes EE (2024) New records of Provanna (Gastropoda, Provannidae) from the Costa Rica Margin and an identification key for the genus. ZooKeys 1189: 1-32. https://doi.org/10.3897/zookeys.1189.109734
Figure 4 Provanna morphotypes sampled from the CRMA, BP. laevis from mussel shells, Mound 12, AD4917, 965 m C, DP. ios from unknown substrate, Jaco Scar, SD214, 1803 m E Specimens of P. pacifica from sunken wood, Mound 11, AD4988, 1017 m F Specimen of P. cf. lomana from mussel shells, Quepos Seep, AD4924, 1413 m. Both the dorsal and ventral view of each shell is shown. Scale bars: 1 mm.
Figure 1 from: Betters MJ, Cordes EE (2024) New records of Provanna (Gastropoda, Provannidae) from the Costa Rica Margin and an identification key for the genus. ZooKeys 1189: 1-32. https://doi.org/10.3897/zookeys.1189.109734
Figure 1 Map of the Costa Rica Margin A overview of the Costa Rica continental shelf with hydrocarbon seep sites labelled B close-up view of the sites Mound 12 and Mound 11, which appear overlapping in the larger map. Bottom bathymetry is demarcated by black lines every 250 m.
Figure 2 from: Betters MJ, Cordes EE (2024) New records of Provanna (Gastropoda, Provannidae) from the Costa Rica Margin and an identification key for the genus. ZooKeys 1189: 1-32. https://doi.org/10.3897/zookeys.1189.109734
Figure 2 Visual definitions of morphological characters and measurements used in the study A shell morphological characters B informative measurements assessed for our own specimens C radular terminology and morphological characters. Abbreviations: SW: Shell Width, SL: Truncated Shell Length, GL: Maximum Granule Length, AL: Aperture Length, AW: Aperture Width.
Figure 8 from: Betters MJ, Cordes EE (2024) New records of Provanna (Gastropoda, Provannidae) from the Costa Rica Margin and an identification key for the genus. ZooKeys 1189: 1-32. https://doi.org/10.3897/zookeys.1189.109734
Figure 8 Bayesian phylogenetic tree of Provanna based on a 452 bp region of the mitochondrial CO1 gene. Novel sequences are bolded and highlighted in yellow. Topology was inferred using the HKY+G+I substitution model. Numbers above branch nodes represent Bayesian posterior probabilities. Numbers below branch nodes represent the proportion of replicate trees in which the associated taxa clustered together in the bootstrap test (10,000 replicates). Only values above 50 are shown. The tree is drawn to scale, with branch lengths representing the number of base substitutions accumulated over time.
Figure 6 from: Betters MJ, Cordes EE (2024) New records of Provanna (Gastropoda, Provannidae) from the Costa Rica Margin and an identification key for the genus. ZooKeys 1189: 1-32. https://doi.org/10.3897/zookeys.1189.109734
Figure 6 A the four morphotypes sampled B–F comparison of morphological traits among each morphotype. The number of individuals represented on the graph and included in one-way ANOVAs are denoted by "n =" above or below each bar. Resultant p-values from one-way ANOVAs are denoted above each graph (p-value: 0 < *** < 0.001 < ** < 0.01 < * 0.05). Provanna cf. lomana was excluded from all ANOVAs due to the small number of individuals, but is included here for graphical comparison. Note that the graphs of Shell Roundness E and Aperture Roundness F have y-axes that do not start at zero. Scale bars: 1 mm.
Figure 3 from: Betters MJ, Cordes EE (2024) New records of Provanna (Gastropoda, Provannidae) from the Costa Rica Margin and an identification key for the genus. ZooKeys 1189: 1-32. https://doi.org/10.3897/zookeys.1189.109734
Figure 3 . Examples of Provanna shell morphological variety AP. kuroshimensis, no sculpturing, growth lines present, flattened suture B–F constricted suture: BP. cooki, spiral sculpture only, no sculptural elements CP. chevalieri, axial sculpture only, no sculptural elements D–F both axial and spiral sculpturing: DP. fenestrata, sculptures about equal in strength, no sculptural elements EP. clathrata, axial sculpture stronger than spiral, blunt, sloping nodules FP. reticulata, spiral sculpture stronger than axial, minor spines.
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