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FIG. 7. — Macrocyprina rocas n in Three new species of Macrocyprina Triebel, 1960 (Crustacea, Ostracoda, Macrocyprididae) from Brazilian shallow marine waters

FIG. 7. — Macrocyprina rocas n. sp., paratypes (MNRJ 15703); A-D, F-H, spm 7,; E, spm 5,; A, antenna I; B, adductor muscle scars; C, antenna II; D, podomere III of antenna II; E, distal region of podomere IV of antenna II of female; F, distal region of podomere IV of antenna II of male; G, podomere V of antenna II; H, podomere VI of antenna II. The arrow points towards the anterior of the animal. Scale bars: 0.1 mm.

FIG. 2. — Macrocyprina youngi n in Three new species of Macrocyprina Triebel, 1960 (Crustacea, Ostracoda, Macrocyprididae) from Brazilian shallow marine waters

FIG. 2. — Macrocyprina youngi n. sp., paratypes (MNRJ 15701); A-D, F-H; spm 8,; E, spm 9,; A, antenna I; B, antenna II; C, podomere III of antenna II; D, ventrodistal angle of podomere III of antenna II; E, distal region of podomere IV of antenna II of female; F, distal region of podomere IV of antenna II of male; G, podomere V of antenna II; H, podomere VI of antenna II. The arrow points to the dorsoproximal scale of antenna II. Scale bars: A, B, 0.2 mm; C-H, 0.1 mm.

FIG. 8. — Macrocyprina rocas n in Three new species of Macrocyprina Triebel, 1960 (Crustacea, Ostracoda, Macrocyprididae) from Brazilian shallow marine waters

FIG. 8. — Macrocyprina rocas n. sp., paratypes (MNRJ 15703); A-C, E, F, spm 7,; D, spm 5,; A, mandible; B, masticatory jaw of mandible; C, maxilla I; D, female appendage V; E, male right appendage V; F, male left appendage V. Scale bars: 0.1 mm.

FIG. 12. — Macrocyprina coimbrai n in Three new species of Macrocyprina Triebel, 1960 (Crustacea, Ostracoda, Macrocyprididae) from Brazilian shallow marine waters

FIG. 12. — Macrocyprina coimbrai n. sp.; A, B, D-H, holotype (MNRJ 15706); C, paratype (MNRJ 15714), spm 7; A, antenna I; B, antenna II; C, distal region of podomere IV of antenna II of female; D, distal region of podomere IV of antenna II of male; E, podomere V of antenna II; F, podomere VI of antenna II; G, mandible; H, maxilla I. Scale bars: 0.2 mm.

FIG. 6. — Macrocyprina rocas n in Three new species of Macrocyprina Triebel, 1960 (Crustacea, Ostracoda, Macrocyprididae) from Brazilian shallow marine waters

FIG. 6. — Macrocyprina rocas n. sp., paratypes (MNRJ 15703); A, B, spm 7,; C, D, spm 6,; E, F, spm 2,; A, right valve; B, left valve; C, right valve; D, left valve; E, right valve; F, left valve; G, dorsal view of carapace; H, ventral view of carapace. The arrows point towards the anterior of the animal. Scale bars: 1 mm.

FIG. 1. — Macrocyprina youngi n in Three new species of Macrocyprina Triebel, 1960 (Crustacea, Ostracoda, Macrocyprididae) from Brazilian shallow marine waters

FIG. 1. — Macrocyprina youngi n. sp., paratypes (MNRJ 15701); A-E, spm 8,; F, G, spm 2,; A, right valve; B, left valve; C, anterior vestibule and radial pore canals; D, posterior vestibule and radial pore canals; E, adductor muscle scars; F, dorsal view of carapace; G, ventral view of carapace. The arrows point towards the anterior of the animal. Scale bars: A, B, F, G, 1 mm; C-E, 0.1 mm.

opencc-by-4.0Mar 2022View details →

zenodo36/100

Extensive Early Marine Seafloor Cementation in a Modern Epeiric Sea Induced by Seawater Properties and a Shallow Redox Boundary below the Seafloor

supplement information for Extensive Early Marine Seafloor Cementation in a  Modern Epeiric Sea Induced by Seawater Properties and a  Shallow Redox Boundary below the Seafloor

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Central California Shallow Nearshore Temperature for Marine Heatwave/Cold Spell Analysis

These are daily-averaged temperature data for use in marine heatwave and cold spell analyses. The data were originally used and described in Dalsin et al. (2023): <a href="https://www.nature.com/articles/s41598-023-39193-4">https://www.nature.com/articles/s41598-023-39193-4</a> Relevant details from Dalsin et al. (2023) copied below: Temperature data from a long-term, subtidal site located along the central California coast (USA). Data were collected in a shallow (~ 3 m nominal depth) nearshore site adjacent to the Diablo Canyon nuclear power plant (35.2055°N, 120.8500°W). Originally established as a control site outside the influence of the power plant’s thermal outfall, these data span from 1978–2020 and make up the longest known in-situ temperature dataset in this region. Temperature was measured using thermistors sampling at 20-min intervals [see Table S1 in Dalsin et al. (2023)]. We acknowledge John Steinbeck from Tenera and Pacific Gas & Electric for assistance acquiring the raw temperature data. <div> </div>

opencc-by-4.0Apr 2024View details →

dryad32/100

Data from: Spatial scaling of beta diversity in the shallow marine fossil record

Beta diversity quantifies the spatial structuring of ecological communities and is a fundamental partition of biodiversity, central to understanding many macroecological phenomena in modern biology and paleobiology. Despite its common application in ecology, studies of beta diversity in the fossil record are limited, particularly at regional spatial scales that are important for understanding macroevolutionary processes. The spatial scaling of beta diversity in the fossil record is poorly understood, but has significant implications due to temporal variation in the spatial distribution of fossil collections and the large spatio-temporal scales typically employed. Here we test the spatial scaling of several common measures of beta diversity using the Cenozoic shallow marine molluscan fossil record of New Zealand, and derive a spatially standardized time series of beta diversity. To measure spatial scaling we use and compare grid cell occupancy based on an equal-area grid and summed minimum spanning tree length, both based on reconstructed paleocoordinates of fossil collections. We find that beta diversity is spatially dependent at local to regional scales, regardless of the metric or spatial scaling utilised, and that spatial standardization significantly changes apparent temporal trends of beta diversity and, therefore, inferences about processes driving diversity change.

opencc-zeroAug 2020View details →

opennotspecifiedDec 2008View details →

FIGURE 2. a in Notes on morphology and ecological difference between species of pontoniine shrimp genus Crinotonia Marin (Caridea: Palaemonidae) associated with shallow-water feather stars Phanogenia spp. (Crinoidea: Comasteridae)

FIGURE 2. a — Crinotonia attenuatus (Bruce, 1971), ovigerous female; b — Crinotonia anastasiae Marin, 2006, nonovigerous female; c, d — feather star Phanogenia gracilis (Hartlaub, 1890), host of Crinotonia attenuatus (Bruce, 1971), 15 m; e — yellow-black feather star Phanogenia sp., host of Crinotonia anastasiae Marin, 2006, 25 m; f — black feather star Phanogenia sp. (upper) and whitish-yellow Phanogenia gracilis (lower) living in the same habitats, depth 25 m.

opennotspecifiedDec 2008View details →

FIGURE 1. Crinotonia anastasiae Marin, 2006 in Notes on morphology and ecological difference between species of pontoniine shrimp genus Crinotonia Marin (Caridea: Palaemonidae) associated with shallow-water feather stars Phanogenia spp. (Crinoidea: Comasteridae)

FIGURE 1. Crinotonia anastasiae Marin, 2006 (a, b, d) and Crinotonia attenuatus Bruce, (1971) (c, e, f): a, b — finger of major pereiopod II; c — chela of pereiopod I; d, e — dactylus of pereiopod III; f — appendix masculina.

opencc-by-4.0Sep 2024View details →

Research Data for 'Oxic conditions in shallow marine settings during the Permian-Triassic Mass Extinction'

Complete geochemical data set  for Siusi/Seis including bulk major, minor and trace element data as well as TOC and mercury content.

opencc-by-4.0Jul 2024View details →

Compilation of Palaeogene shallow marine and freshwater diatomites

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dryad32/100

Data from: Climate and sea-level changes across a shallow marine Cretaceous–Palaeogene boundary succession in Patagonia, Argentina

Upper Maastrichtian to lower Paleocene, coarse-grained deposits of the Lefipán Formation in Chubut Province, (Patagonia, Argentina) provide an opportunity to study environmental changes across the Cretaceous–Palaeogene (K–Pg) boundary in a shallow marine depositional environment. Marine palynological and organic geochemical analyses were performed on the K–Pg boundary interval of the Lefipán Formation at the San Ramón section. The palynological and organic geochemical records from the San Ramón K–Pg boundary section are characteristic of a highly dynamic, nearshore setting. High abundances of terrestrial palynomorphs, high BIT-index values and the occasional presence of plant fossils are indicative of a large input of terrestrial organic material. The organic-walled dinoflagellate cyst (dinocyst) assemblage is generally dominated by Senegalinium and other peridinioid dinocyst taxa, indicative of high-nutrient conditions and decreased salinities, probably associated with a large fluvial input. The reconstructed sea surface temperatures range from 25°C to 27°C, in accordance with the tropical climate inferred by palynological and megafloral studies. As in the Bajada del Jagüel section, ~500 km north-north-east of San Ramón, peaks of Senegalinium spp. were recorded below and above the K–Pg boundary, possibly related to enhanced runoff resulting from more humid climatic conditions. The lithological, palynological and organic geochemical records suggest the occurrence of a sea-level regression across the K–Pg boundary, resulting in a hiatus directly at the boundary in both sections, followed by a transgression in the Danian.

opencc-zeroDec 2016View details →

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Alternating regimes of shallow and deep-sea diversification explain a species-richness paradox in marine fishes

The deep sea contains a surprising diversity of life, including iconic fish groups such as anglerfishes and lanternfishes. Still, > 65% of marine teleost fish species are restricted to the photic zone < 200 m, which comprises less than 10% of the ocean's total volume. From a macroevolutionary perspective, this paradox may be explained by three hypotheses: 1) shallow-water lineages have had more time to diversify than deep-sea lineages, 2) shallow-water lineages have faster rates of speciation than deep-sea lineages, or 3) shallow-to-deep sea transition rates limit deep-sea richness. Here we use phylogenetic comparative methods to test among these three non-mutually exclusive hypotheses. While we found support for all hypotheses, the disparity in species richness is better described as the uneven outcome of alternating phases that favored shallow or deep diversification over the past 200 million y. Shallow marine teleosts became incredibly diverse 100 million years ago during a period of warm temperatures and high sea level, suggesting the importance of reefs and epicontinental settings. Conversely, deep-sea colonization and speciation were favored during brief episodes when cooling temperatures increased the efficiency of the ocean's carbon pump. Finally, time-variable ecological filters limited shallow-to-deep colonization for much of teleost history, which helped maintain higher shallow richness. A pelagic lifestyle and large jaws were associated with early deep-sea colonists, while a demersal lifestyle and a tapered body plan were typical of later colonists. Therefore, we also suggest that some hallmark characteristics of deep-sea fishes evolved prior to colonizing the deep sea.

opencc-zeroOct 2022View details →

FIGURE 21. Dissodactylus crinitichelis Moreira, 1901 in Checklist of the shallow-water marine Brachyura (Crustacea: Decapoda) of Barbados, West Indies

FIGURE 21. Dissodactylus crinitichelis Moreira, 1901, female, cw 3.5 mm (BLSZ 042): A, dorsal view of carapace; B, frontal view of carapace. Scale bar = 1 mm.

FIGURE 20. Superfamily Grapsoidea MacLeay, 1838 in Checklist of the shallow-water marine Brachyura (Crustacea: Decapoda) of Barbados, West Indies

FIGURE 20. Superfamily Grapsoidea MacLeay, 1838, dorsal habitus: A, Grapsus grapsus (Linnaeus, 1758), female (juv.), cw 26.6 mm (BLSZ 231); B, Pachygrapsus transversus (Gibbes, 1850), male, cw 10.2 mm (BLSZ 209); C, Percnon gibbesi (H. Milne Edwards, 1853), male, 20.8 mm (BLSZ 117); D, Plagusia depressa (Fabricius, 1775), female, cw 10.6 mm (MZUSP 40922). Scale bars = 20 mm.

FIGURE 17. Superfamily Portunoidea Rafinesque, 1815 in Checklist of the shallow-water marine Brachyura (Crustacea: Decapoda) of Barbados, West Indies

FIGURE 17. Superfamily Portunoidea Rafinesque, 1815, dorsal habitus: A, Charybdis hellerii (A. Milne-Edwards, 1867), male, cw 69.3 mm (BLSZ 019); B, Cronius ruber (Lamarck, 1818), male, cw 13.1 mm (BLSZ 062); C, Laleonectes vocans (A. Milne-Edwards, 1878), male, cw 20.0 mm (MZUSP 40913); D, Portunus sayi (Gibbes, 1850), female, cw 38.0 mm (BLSZ 205). Scale bars: A, C, D = 20 mm; B = 5 mm.

FIGURE 18. Superfamily Xanthoidea MacLeay, 1838 in Checklist of the shallow-water marine Brachyura (Crustacea: Decapoda) of Barbados, West Indies

FIGURE 18. Superfamily Xanthoidea MacLeay, 1838, dorsal habitus: A, Eurypanopeus abbreviatus (Stimpson, 1860), male, cw 17.9 mm (BLSZ 210); B, Heteractaea ceratopus (Stimpson, 1860), male, cw 12.9 mm (BLSZ 122); C, Paractaea nodosa (Stimpson, 1860), male, cw 6.1 mm (BLSZ 215). Scale bars: 10 mm (A, B); 5 mm (C).

FIGURE 19. Superfamily Xanthoidea MacLeay, 1838 in Checklist of the shallow-water marine Brachyura (Crustacea: Decapoda) of Barbados, West Indies

FIGURE 19. Superfamily Xanthoidea MacLeay, 1838, dorsal habitus: A, Platyactaea setigera (H. Milne Edwards, 1834), female, cw 16.5 mm (BLSZ 216); B, Cataleptodius floridanus (Gibbes, 1850), male, cw 21.7 mm (BLSZ 273); C, Mecataleptodius parvulus (Fabricius, 1793), male, cw 17.3 mm (BLSZ 237); D, Williamstimpsonia denticulatus (White, 1848), male, cw 10.2 mm (BLSZ 254). Scale bars: 20 mm.