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FIGURE 6 in A new Western North Atlantic Ocean kitefin shark (Squaliformes: Dalatiidae) from the Gulf of Mexico

FIGURE 6. Mollisquama mississippiensis sp. nov. spiral valve detail (a single synchrotron scan layer); anterior is to the right.

FIGURE 5 in A new Western North Atlantic Ocean kitefin shark (Squaliformes: Dalatiidae) from the Gulf of Mexico

FIGURE 5. Mollisquama mississippiensis sp. nov. right pocket gland anatomy at maximum dimensions (a single synchrotron scan layer); total length approximately 7.0 mm x 1.5 mm width; anterior is to the right.

FIGURE 4 in A new Western North Atlantic Ocean kitefin shark (Squaliformes: Dalatiidae) from the Gulf of Mexico

FIGURE 4. (A) Putative pit organ of Mollisquama mississippiensis sp. nov. in the photo center (0.5 mm diameter); anterior is the photo upper margin. (B) SEM micrograph of Mollisquama mississippiensis sp. nov. dermal denticles; anterior is to the left.

FIGURE 2 in A new Western North Atlantic Ocean kitefin shark (Squaliformes: Dalatiidae) from the Gulf of Mexico

FIGURE 2. Mollisquama mississippiensis sp. nov., upper tooth lateral view (tooth #4 right); lower tooth labial-surface view (tooth #4 right).

FIGURE 3 in A new Western North Atlantic Ocean kitefin shark (Squaliformes: Dalatiidae) from the Gulf of Mexico

FIGURE 3. Mollisquama mississippiensis sp. nov. CT scan of vertebral column (http://sharksrays.org/).

FIGURE 1 in A new Western North Atlantic Ocean kitefin shark (Squaliformes: Dalatiidae) from the Gulf of Mexico

FIGURE 1. Mollisquama mississippiensis sp. nov., TU 203676 illustrated to scale in (A) lateral and (B) ventral view.

opencc-by-4.0Oct 2024View details →

Relating North Atlantic Deep Water transport to ocean bottom pressure variations as a target for satellite gravimetry missions

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opencc-by-4.0Jun 2024View details →

A Reconstructed Coastal Acidification Database (ReCAD) pCO2 data product for the North American Atlantic Coastal Ocean Margins

<h1>Reconstructed Coastal Acidification Database (ReCAD)</h1> Insufficient spatiotemporal coverage of the partial pressure of CO2 (pCO2) observations has hindered precise carbon cycle studies in coastal oceans and justifies the development of spatially and temporally continuous pCO2 data products. Earlier pCO2 products have difficulties in capturing the heterogeneity of regional variations and decadal trends of pCO2 in the North American Atlantic Coastal Ocean Margin (NAACOM). This study developed a regional reconstructed pCO2 product for the NAACOM (Reconstructed Coastal Acidification Database-pCO2, or ReCAD-NAACOM-pCO2) using a two-step approach combining random forest regression and linear regression. The product provides monthly pCO2 data at 0.25° spatial resolution from 1993 to 2021, enabling investigation of regional spatial differences, seasonal cycles, and decadal changes in pCO2. The observation-based reconstruction was trained using Surface Ocean CO2 Atlas (SOCAT) observations as observational values, with various satellite-derived and reanalysis environmental variables known to control sea surface pCO2 as model inputs. The product shows high accuracy during the model training, validation, and independent test phases, demonstrating robustness and capability to accurately reconstruct pCO2 in regions or periods lacking direct observational data. Compared with all the observation samples from SOCAT, the pCO2 product yields a determination coefficient of 0.92, a root-mean-square error of 12.70 µatm, and an accumulative uncertainty of 23.25 µatm. The ReCAD-NAACOM-pCO2 product demonstrates its capability to resolve seasonal cycles, regional-scale variations, and decadal trends of pCO2 along the NAACOM. This new product provides reliable pCO2 data for more precise studies of coastal carbon dynamics in the NAACOM region. The dataset is publicly accessible at <a href="https://doi.org/10.5281/zenodo.11500974">https://doi.org/10.5281/zenodo.11500974</a> (Wu et al., 2024a) and will be updated regularly. <div> <div> </div> </div> Version 1.1: Update the training set output as the direct model outputs instead of being the 10-fold cross-validation output in v1.0. Data description paper: Wu, Z., Lu, W., Roobaert, A., Song, L., Yan, X.-H., and Cai, W.-J.: A machine-learning reconstruction of sea surface pCO2 in the North American Atlantic Coastal Ocean Margin from 1993 to 2021, Earth Syst. Sci. Data, 17, 43–63, <a href="https://doi.org/10.5194/essd-17-43-2025">https://doi.org/10.5194/essd-17-43-2025</a>, 2025.

FIGURE 6. Caulleriella rodmani n in New species and records of Caulleriella (Annelida, Cirratulidae) from shelf and slope depths of the Western North Atlantic Ocean

FIGURE 6. Caulleriella rodmani n. sp. A, anterior end, dorsal view; B, posterior end, dorsal view; C. anterior end dorsal view; D, mid-body setigers; E, notopodial capillaries, anterior setigers; F, neuropodial hook and capillary, from anterior setiger 12; G, neuropodial bidentate hook. A–B, holotype (USNM 1642603); C–G, paratype (USNM 1642634).

FIGURE 8 in New species and records of Caulleriella (Annelida, Cirratulidae) from shelf and slope depths of the Western North Atlantic Ocean

FIGURE 8. Caulleriella venefica Doner & Blake, 2006. A, Entire worm, coiled; B, anterior end, left lateral view; C, anterior end, left lateral view of another specimen; D, anterior end, ventral view; E, anterior end, frontal view; F, left lateral view of setigers 12–14, noto- and neuropodia with capillaries and hooks evident; G, two neuropodial hooks and one capillary; H, one neuropodial hook and one capillary; I, posterior end, left lateral view. SEMs from three specimens on stub from Georges Bank Sta. 5-28, Cruise M10, Rep. 4, coll. 13 Nov. 1983 (USNM 1642707).

FIGURE 5. Caulleriella pintada n in New species and records of Caulleriella (Annelida, Cirratulidae) from shelf and slope depths of the Western North Atlantic Ocean

FIGURE 5. Caulleriella pintada n. sp. A, anterior end dorsolateral view; B, posterior end, lateral view; C–D, anterior end dorsal view; E, posterior end dorsal view; F, posterior segments, dorsal view; G, middle body segments with eggs; H, neuropodial hooks; I, notopodial hook and capillary. A–B, holotype (USNM 1642599); C–I, paratypes (USNM 1642600).

FIGURE 4. Caulleriella pintada n in New species and records of Caulleriella (Annelida, Cirratulidae) from shelf and slope depths of the Western North Atlantic Ocean

FIGURE 4. Caulleriella pintada n. sp. A, Anterior end, right lateral view; B, anterior end, dorsolateral view; C, posterior end, dorsal view; D, notopodial hook; E, neuropodial hook and capillary. A, C, holotype (USNM 1642599); B, D–E, paratype (USNM 1642600).

FIGURE 1. Caulleriella filiformia n in New species and records of Caulleriella (Annelida, Cirratulidae) from shelf and slope depths of the Western North Atlantic Ocean

FIGURE 1. Caulleriella filiformia n. sp. Paratype (USNM 1642572); A, anterior end, dorsal view: Holotype (USNM 1642576): B, anterior end, dorsal view; C, posterior end, dorsal view; D, neuropodial hook; E, notopodial hook.

FIGURE 2. Caulleriella filiformia n in New species and records of Caulleriella (Annelida, Cirratulidae) from shelf and slope depths of the Western North Atlantic Ocean

FIGURE 2. Caulleriella filiformia n. sp. A, Anterior end, left lateral view; B, Anterior end, dorsal view; C, mid-body setigers, dorsal view; D, transition from mid-body to posterior setigers, dorsal view; E, posterior setigers, dorsal view; F, far posterior setigers with pygidium; G, pygidium dorsal, view; H, notopodial hook; I, neuropodial hook. A, G, I (Sta. 15, SA-4, Rep 2, USNM 1642573); B–E, H (USNM 1642577); F, holotype (USNM 1642576). Stained with Shirlastain A.

FIGURE 3. Caulleriella nobska n in New species and records of Caulleriella (Annelida, Cirratulidae) from shelf and slope depths of the Western North Atlantic Ocean

FIGURE 3. Caulleriella nobska n. sp. A, anterior end, left lateral view; B, anterior end, dorsal view; C, posterior end, dorsal view; D, setiger 4, anterior view; E, anterior notopodial capillary seta; F–H, anterior neuropodial capillaries; I, middle body setiger, anterior view; J–K, notopodial bidentate hooks; L–M, neuropodial hooks. A–C, holotype (MCZ 161683); D–M, paratypes (MCZ 161684).

FIGURE 7. Caulleriella rodmani n in New species and records of Caulleriella (Annelida, Cirratulidae) from shelf and slope depths of the Western North Atlantic Ocean

FIGURE 7. Caulleriella rodmani n. sp. A, entire worm, lateral view (inset of segment with fecal pellet not to scale); B, entire worm, dorsolateral view; C, anterior end, right lateral view; D, anterior end, right lateral view; E, anterior end, dorsal view; F, posterior end, dorsal view. A, C, (paratype, USNM 1642648); B, (paratype, USNM 1642633); D–F, holotype (USNM 1542603).

Figure 23 in Description of two new species of Zosime (Copepoda: Harpacticoida: Zosimeidae), including remarks on its phylogeny and distribution on the Great Meteor Seamount plateau (North-east Atlantic Ocean)

Figure 23. Rarefaction curves of: (a) stations pooled according to their regions – north, middle and south; (b) single northern stations; (c) single middle stations; (d) single southern stations. E(SN) is the expected number of species at a set number of Zosimeidae (N).

Figure 15 in Description of two new species of Zosime (Copepoda: Harpacticoida: Zosimeidae), including remarks on its phylogeny and distribution on the Great Meteor Seamount plateau (North-east Atlantic Ocean)

Figure 15. Zosime eliasi sp. nov.: (a) antenna (paratype 3, male), exopod omitted (origin indicated by dashed lines); (aʹ) antenna exopod (paratype 3, male; dashed setae reconstructed from second antenna of same paratype); (b) mandible (paratype 2, female); (c) maxillule; (cʹ) coxa of maxillule (paratype 3, male); (d) maxilla (paratype 3, male); (dʹ) basis of maxilla (paratype 3, male). Scale bar: 50 µm.

Figure 21 in Description of two new species of Zosime (Copepoda: Harpacticoida: Zosimeidae), including remarks on its phylogeny and distribution on the Great Meteor Seamount plateau (North-east Atlantic Ocean)

Figure 21. Similarity of the three plateau regions north (○), middle (x) and south (●) of the Great Meteor Seamount (GMS), concerning the zosimeid taxa. Visualised as a non-metric multi-dimensional scaling plot (nMDS) based on the cosine similarity; stress: 0.0837.

Figure 19 in Description of two new species of Zosime (Copepoda: Harpacticoida: Zosimeidae), including remarks on its phylogeny and distribution on the Great Meteor Seamount plateau (North-east Atlantic Ocean)

Figure 19. Zosime eliasi sp. nov., male antennule (paratype 3): general shape and setation of segments 1–7. Scale bar: 50 µm.