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58 results for “Paxillosida”
FIGURE 14 in A new species of Astropecten (Echinodermata: Asteroidea: Paxillosida: Astropectinidae) and a comparison of the Astropecten species from the Gulf of Mexico and the East Florida Shelf
FIGURE 14. Astropecten spp. inferomarginal plates with dense squamules (A, B), and plates with wide bare patches on the ventral surface (C, D). A. A. articulatus USNM E12852, neotype. B A. duplicatus FSBC I 070291. C. A. karankawai FSBC I 129419, paratype. D. A. mcedwardi sp. nov. FSBC I 071424.
FIGURE 20 in A new species of Astropecten (Echinodermata: Asteroidea: Paxillosida: Astropectinidae) and a comparison of the Astropecten species from the Gulf of Mexico and the East Florida Shelf
FIGURE 20. Astropecten spp. with large disks and short arms (A) and small disks and narrow, long arms (B). A, A. marginatus, USNM E18387. B, A. karankawai, USNM 1422432, holotype (large specimen) and FSBC I 134511, paratype (small specimen) (from Lawrence et al. 2018b, Fig. 3). Scale bars 2 cm.
FIGURE 18 in A new species of Astropecten (Echinodermata: Asteroidea: Paxillosida: Astropectinidae) and a comparison of the Astropecten species from the Gulf of Mexico and the East Florida Shelf
FIGURE 18. Astropecten spp. adambulacral plates with two (sometimes three) discrete rows of adambulacral spines, with an enlarged spine in the middle of the second row (A, B), and adambulacral plates with short spines surrounding an enlarged, central spine (no discrete rows) behind the furrow spines (C, D). A, A. antillensis, ZMUC AST-4, syntype. B, A. mcedwardi n. sp., FSBC I 005769. C, A. marginatus USNM E18385. D, A. karankawai FSBC I 129419, paratype.
FIGURE 19 in A new species of Astropecten (Echinodermata: Asteroidea: Paxillosida: Astropectinidae) and a comparison of the Astropecten species from the Gulf of Mexico and the East Florida Shelf
FIGURE 19. Astropecten spp. with small disks and narrow, long arms (A) and large disks and short arms (B). A, A. antillensis, ZMUC AST-4, syntypes. B, A. mcedwardi sp. nov., FSBC I 071424. Scale bars 2 cm.
Figure 3 in Pseudarchasteridae (Asteroidea: Paxillosida) in Japanese waters, with description of a new species and range extension of three species
Figure 3. Paragonaster stenostichus, OMNH-Iv 10662. A, Live specimen, whole body, abactinal (left) and actinal (right) side; B, abactinal surface of proximal portion of disc; C, denuded abactinal surface of proximal portion of arm; D, denuded actinal surface of interradii to proximal portion of arm; E, actinal surface of interradii to proximal portion of arm; F, denuded actinal surface of a jaw. Abbreviations: ad, adambulacral series; c, carinal abactinal series; i, inferomarginal series; o, oral plate; s, superomarginal series; u, unpaired oral spine. Scale bars: A = 10 mm; B–F = 1 mm.
Figure 2 in Pseudarchasteridae (Asteroidea: Paxillosida) in Japanese waters, with description of a new species and range extension of three species
Figure 2. Paragonaster obutsus, OMNH-Iv 10661. A, Whole body, abactinal (top) and actinal (bottom) side; B, denuded abactinal surface of proximal portion of arm; C, abactinal surface of proximal portion of disc; D, denuded actinal surface of interradii to proximal portion of arm; E, actinal surface of interradii to proximal portion of arm; F, denuded actinal surface of a jaw. Abbreviations: ad, adambulacral series; c, carinal abactinal series; i, inferomarginal series; o, oral plate; s, superomarginal series; u, unpaired oral spine. Scale bars: A = 10 mm; B–F = 1 mm.
Figure 1. Gephyreaster swifti, NSMT E-14747. A in Pseudarchasteridae (Asteroidea: Paxillosida) in Japanese waters, with description of a new species and range extension of three species
Figure 1. Gephyreaster swifti, NSMT E-14747. A, Live specimen, whole body, abactinal (left) and actinal (right) side; B, denuded abactinal surface of proximal portion of arm; C, denuded abactinal surface of distal portion of arm; D, abactinal surface of proximal portion of disc; E, denuded supero- and inferomarginal plates of proximal portion of arm; F, supero- and inferomarginal plates of proximal portion of arm; G, denuded actinal surface of interradii to proximal portion of arm; H, actinal surface of interradii to proximal portion of arm; I, abactinal surface of an extracted jaw. Abbreviations: ad, adambulacral series; c, carinal series; i, inferomarginal series; o, oral plate; s, superomarginal series; t, tube feet; u, unpaired oral spine. Scale bars: A = 10 mm; B–I = 1 mm.
Figure 4 in Pseudarchasteridae (Asteroidea: Paxillosida) in Japanese waters, with description of a new species and range extension of three species
Figure 4. Paragonaster hoeimaruae sp. n., holotype OMNH-Iv 10664. A, Live specimen, whole body, abactinal (top) and actinal (bottom) side; B, denuded abactinal surface of proximal portion of arm; C, live specimen, abactinal surface of interradial disc; D, live specimen, abactinal surface of centre of disc; E, denuded actinal surface of interradii to proximal portion of arm; F, live specimen, actinal surface of interradii to proximal portion of arm; G, actinal pediecllariae of proximal portion of arm; H, denuded actinal surface of a jaw. Abbreviations: ad, adambulacral series; an, anus; c, carinal abactinal series; i, inferomarginal series; o, oral plate; pa, papulae; pe, pedicellariae; s, superomarginal series; t, tube feet; u, unpaired oral spine. Scale bars: A = 10 mm; B–H = 1 mm.
FIGURE 1 in Phylogenetic relationships in the genus Astropecten Gray (Paxillosida: Astropectinidae) on a global scale: molecular evidence for morphological convergence, species-complexes and possible cryptic speciation
FIGURE 1. Phylogeny of the genus Astropecten as suggested by Döderlein (1917) presenting the relationships of species and species groups relevant to this study.
FIGURE 1 in First record of Luidia atlantidea Madsen, 1950 (Echinodermata: Asteroidea Paxillosida: Luidiidae) in the Sidi-Medjdoub area-Mostaganem (West Algerian coast, Mediterranean Sea)
FIGURE 1. Sampling station of Luidia atlantidea (indicated by the black circle).
FIGURE 8 in Morphological comparison of Astropecten cingulatus and a new species of Astropecten (Paxillosida, Astropectinidae) from the Gulf of Mexico
FIGURE 8. Astropecten karankawai, actinal surface of IM plates: A. Dry specimen. B, Wet specimen.
FIGURE 5 in Morphological comparison of Astropecten cingulatus and a new species of Astropecten (Paxillosida, Astropectinidae) from the Gulf of Mexico
FIGURE 5. Superomarginal plates of A. karankawai with small spines at the interradius (arrows).
FIGURE 1 in Morphological comparison of Astropecten cingulatus and a new species of Astropecten (Paxillosida, Astropectinidae) from the Gulf of Mexico
FIGURE 1. Astropecten cingulatus: Holotype. Left, Abactinal view. Right, Actinal view. R = 28 mm.
FIGURE 12 in A new species of Astropecten (Echinodermata: Asteroidea: Paxillosida: Astropectinidae) and a comparison of the Astropecten species from the Gulf of Mexico and the East Florida Shelf
FIGURE 12. Distribution of Astropecten mcedwardi and A. antillensis examined in the present study.
FIGURE 4 in Phylogenetic relationships in the genus Astropecten Gray (Paxillosida: Astropectinidae) on a global scale: molecular evidence for morphological convergence, species-complexes and possible cryptic speciation
FIGURE 4. Mediterranean and East Atlantic (see caption of Figure 3 for further explanations)
FIGURE 2 in Phylogenetic relationships in the genus Astropecten Gray (Paxillosida: Astropectinidae) on a global scale: molecular evidence for morphological convergence, species-complexes and possible cryptic speciation
FIGURE 2. Collection sites of Astropecten specimens and outgroup taxa.
FIGURE 4. Paxillosida. Dytaster insignis A in New species, occurrence records and observations of predation by deep-sea Asteroidea (Echinodermata) from the North Atlantic by NOAA ship Okeanos Explorer
FIGURE 4. Paxillosida. Dytaster insignis A. Orange form. West Florida Escarpment, Gulf of Mexico, 2987 m. B. White form, Perdido Canyon, Gulf of Mexico, 26.1471, 94.86584, 2745 m. C. Cheiraster cf. echinulatus Pourtales Terrace, Gulf of Mexico, 332 m.
FIGURE 3 in Phylogenetic relationships in the genus Astropecten Gray (Paxillosida: Astropectinidae) on a global scale: molecular evidence for morphological convergence, species-complexes and possible cryptic speciation
FIGURE 3. Total evidence molecular phylogeny of 117 specimens of Astropecten and seven outgroup taxa based on combined 12S, 16S and COI sequences of the mitochondrial DNA. (a) Maximum parsimony strict consensus tree of 2600 most parsimonious trees (length = 3447). Above nodes: bootstrap support values above 50% from 1,000 replicates. Below nodes: decay indices. (b) Bayesian inference tree resulting from 9,500 trees based on the GTR+I+Γ model. Posterior probabilities are indicated above nodes. See Table 1 for collection locality of specimens. EP = East Pacific, WA = West Atlantic; CP = Central Pacific; WP = West Pacific; IP = Indo-Pacific; IO = Indian Ocean; EA = East Atlantic, EM = East Mediterranean, WM = West Mediterranean
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OpenNeuro
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