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576 results for “Asteroideae”
Fig. 4 in First Record of the Family Myxasteridae (Asteroidea: Velatida) from Western North Pacific with Description of a New Species of Asthenactis
Fig. 4. Actinal views of Asthenactis agni n. sp. Holotype, NSMT E-13917. A, Whole body; B, denuded actinal surface at the proximal part of arm; C, actinal surface of the 1st to 4th adambulacral plates; D, actinal surface of the 5th to 6th adambulacral plates, showing an aperture (arrowhead) of an actinolateral membrane. Tips of furrow spines on 5th adambulacal plate shown as the white dotted line were removed; E, actinal surface of oral plates and 1st to 2nd adambulacral plates; F, actinal surface of ambulacral groove. Abbreviations: a, abradial-most actinolateral spine; ad, adambulacral plates; f, furrow spines; or, oral plates; os, oral spines; t, tube feet. Arabic numerals 1 to 6 indicate the spines standing on 1st to 6th adambulacral plates, respctively. Scale bars indicate 10 mm in A and 1 mm in B–F. Proximal is left in B, C, D, and F and bottom in E.
Fig. 6 in First Record of the Family Myxasteridae (Asteroidea: Velatida) from Western North Pacific with Description of a New Species of Asthenactis
Fig. 6. SEM images of spines of Asthenactis agni n. sp. A, Abactinal spines on the proximal portion of the arms; B, abactinal spines from one of the primary radial plates; C, furrow spines from 3rd adambulacral plate; D, actinolateral spines from 3rd adambulacral plate.
Fig. 1 in First Record of the Family Myxasteridae (Asteroidea: Velatida) from Western North Pacific with Description of a New Species of Asthenactis
Fig. 1. Sampling site of Asthenactis agni n. sp. (indicated by an orange star) and the geographic distribution of nine known species of the family Myxasteridae in the world's oceans. a, Asthenactis australis; b, Asthenactis papyraceus; c, Asthenactis fisheri; d, Myxaster medusa; e, Myxaster perrieri; f, Myxaster sol; g, Pythonaster atlantidis; h, Pythonaster murrayi; i, Pythonaster pacificus. Previous records with information of the sampling sites and/or coordinates are shown herein (Fisher 1906; Alton 1966; Downey 1979; Clark and Downey 1992; Howell et al. 2002; Dilman 2005; McKnight 2006; Mah et al. 2012; Mah 2020). The locality of A. papyraceus and one of the localities of P. atlantidis are Hawaii and the Porcupine Abyssal Plain, respectively, without data on the coordinates (open circles) (Fisher 1906; Howell et al. 2002). The colors of plots of orange, green, and purple correspond to the genera Asthenactis, Myxaster, and Pythonaster, respectively.
FIG. 7 in Revision of the genus Benthogenia Fisher, 1911 (Asteroidea, Echinodermata), with description of a new species and ossicle anatomy
FIG. 7. — Scanning electron microscopy (SEM) images of the orals (A, B), 1st ambulacrals (C, D), odontophores (E-F), ambulacrals (G-L), and adambulacrals (M-O) of Benthogenia mahi n. sp., specimen MNHN-IE-2013-2199: A, oral in adradial view; B, oral in abradial view; C, 1st ambulacral in adradial view; D, 1st ambulacral in abradial view; E, odontophore in actinal view; F, odontophore in abactinal view; G, second ambulacral in adradial view; H, third ambulacral in abradial view; I, K, ambulacrals in abradial view; J, ambulacral in abradial view; L, ambulacral in abactinal view; M, adambulacral in abactinal view; N, O, adambulacrals in actinal view. Colored areas indicate the presence of a differentiated stereom. See Table 2 for abbreviations. Proximal direction to the left, actinal direction to the bottom except for M-O, adradial direction to the top. Scale bars: A-I, M-O, 2 mm; J-L, 1 mm.
FIG. 6. — Benthogenia mahi n in Revision of the genus Benthogenia Fisher, 1911 (Asteroidea, Echinodermata), with description of a new species and ossicle anatomy
FIG. 6. — Benthogenia mahi n. sp. in abactinal (A, C, E) and actinal view (B, D, F): A, B, holotype MNHN-IE-2013-2216; C, D, MNHN-IE-2007-1580; E, F, MNHN-IE-2019-3879. Scale bars: 5 cm.
FIG. 4 in Revision of the genus Benthogenia Fisher, 1911 (Asteroidea, Echinodermata), with description of a new species and ossicle anatomy
FIG. 4. — Ambulacral furrow and distal part of the arm of Benthogenia cribellosa Fisher, 1911 MNHN-IE-2019-3848 (A, C, E) and Benthogenia mahi n. sp. MNHN-IE-2019-3879 (B, D, F): A, B, proximal part of the ambulacral furrow; C, D, distal part of the ambulacral furrow; E, F, distal view of the arm showing terminal ossicle. Abbreviations: adamb, adambulacral; amb, ambulacral; fur sp, furrow spines; im, inferomarginals; im sp, inferomarginal spines; sm, superomarginals; sm sp, superomarginal spines. Scale bars: 5 mm.
FIG. 8 in Revision of the genus Benthogenia Fisher, 1911 (Asteroidea, Echinodermata), with description of a new species and ossicle anatomy
FIG. 8. — Arm sections of Benthogenia mahi n. sp. holotype MNHN-IE-2013-2216 (A) and Hyphalaster inermis Sladen, 1883 USNM 1018661 (B). Red bars show the width (W) of and the height (H) of the superomarginals. Scale bars: 1 cm.
FIG. 3 in Revision of the genus Benthogenia Fisher, 1911 (Asteroidea, Echinodermata), with description of a new species and ossicle anatomy
FIG. 3. — Marginals and arms in abactinal view of Benthogenia cribellosa Fisher, 1911 (A, C, E) and Benthogenia mahi n. sp. (B, D, F): A, holotype USNM 28655; B, holotype MNHN-IE-2013-2216; C, E, MNHN-IE-2019-3848; D, F, MNHN-IE-2019-3879. Abbreviations: im, inferomarginals; pax, paxillae; sm, superomarginals. Scale bars: 5 mm.
FIG. 1 in Revision of the genus Benthogenia Fisher, 1911 (Asteroidea, Echinodermata), with description of a new species and ossicle anatomy
FIG. 1. — Benthogenia cribellosa Fisher, 1911 in abactinal (A, C, E) and actinal view (B, D, F): A, B, holotype USNM 28655; C, D, MNHN-IE-2007-1828; E, F, MNHN-IE-2019-3848. Scale bars: 5 cm.
FIG. 2 in Revision of the genus Benthogenia Fisher, 1911 (Asteroidea, Echinodermata), with description of a new species and ossicle anatomy
FIG. 2. — Cribriform organs on the marginals of the disc: A, B, Benthogenia cribellosa Fisher, 1911 MNHN-IE-2019-3848; C, D, Benthogenia mahi n. sp. MNHN-IE-2019-3879. Abbreviations: im, inferomarginals; sm, superomarginals. Scale bars: A, C, 1 cm; B, D, 5 mm.
FIG. 5 in Revision of the genus Benthogenia Fisher, 1911 (Asteroidea, Echinodermata), with description of a new species and ossicle anatomy
FIG. 5. — Oral frame of Benthogenia cribellosa Fisher, 1911 (A, C) and Benthogenia mahi n. sp. (B, D): A, holotype of Benthogenia cribellosa USNM 28655; B, holotype and Benthogenia mahi n. sp. MNHN-IE-2013-2216; C, MNHN-IE-2019-3848; D, MNHN-IE-2019-3879. Scale bars: 5 mm.
Figure 1. a, b in A new fissiparous micro-asteriid from southern Australia (Echinodermata: Asteroidea: Asteriidae)
Figure 1. a, b. Allostichaster palmula Benavides-Serrato and O'Loughlin sp. nov. (NMV F113585, holotype): a, abactinal view showing blunt arms, post-fissiparous form, paddle-like inferomarginal spines; b, actinal view showing evidence of 6 arms (2 large, 2 small, 2 detached not shown). c, d. Allostichaster polyplax (Müller and Troschel) (F73988): c, abactinal view of regenerating arm showing clavate marginal spines; d, actinal view showing post-fissiparity form and typical 8 arms. e, f. Allostichaster palmula (NMV F113566, paratype): e abactinal view showing post-fissiparous form, carinal series, papular spaces, and paddle-like inferomarginal spines; f, actinal view showing 3 normal blunt arms and 2 detached not present.
Figure 2. a in A new fissiparous micro-asteriid from southern Australia (Echinodermata: Asteroidea: Asteriidae)
Figure 2. a. Allostichaster palmula sp. nov. (NMV F113585): abactinal view showing 2 typical inferomarginal spines (centre) with distinct stem, broad flat blade with vertical and radiating ribs, and coarsely serrate distal edge. b. Allostichaster polyplax (F73988): abactinal view showing clavate inferomarginal spines. c. Allostichaster palmula (NMV F113566): abactinal view of disc showing distally widened, coarsely spinous, spinelets, and small crossed pedicellaria (top). d. Allostichaster polyplax (F73988): abactinal view of proximal arm showing finely spinous globose and subcolumnar spinelets, and small crossed pedicellaria (top). e. Allostichaster palmula (NMV F113566): abactinal view of arm showing carinal series, papular spaces, and typical paddle-shaped inferomarginal spines (top). f. diagram showing typical skeletal plates of an arm of Allostichaster palmula: a, adambulacral; i, inferomarginal; s, superomarginal; p, papular space (shaded); c, carinal (proximal ray at top).
Figure 4 in A new fissiparous micro-asteriid from southern Australia (Echinodermata: Asteroidea: Asteriidae)
Figure 4.Livespecimenof Allostichaster palmula sp. nov. from 10–12 m at Popes Eye in Port Phillip Bay (NMV F132700; R = 1.2 mm; 5 equal rays at this smallest size; photo by Trevor McMurrich).
Figure 5. a–c in A new asterinid genus from the Indo-West Pacific region, including five new species (Echinodermata: Asteroidea: Asterinidae)
Figure 5. a–c, Ailsastra eleaumei sp. nov., MNHN EcAs 11843: a, low carinal series of plates with bowl-shaped spinelet arrangements; b, bowl-shaped arrangements of spinelets on disc plates; c, interradial abactinal gonopores (arrows). d–f, Ailsastra heteractis (H.L. Clark, 1938), MCZ 3258: d, lateral ray abactinal spinelets; e, inferomarginal spinelets; f, small oral plates, proximal actinal pores (arrows). g–i, Ailsastra paulayi sp. nov., UF 1815: g, abactinal spinelets; h, abactinal interradial plates removed to show absence of superambulacral plates (arrow); i, distal abactinal interradius.
Figure 3 in A new asterinid genus from the Indo-West Pacific region, including five new species (Echinodermata: Asteroidea: Asterinidae)
Figure 3. Actinal view of holotypes of species of Ailsastra gen. nov. a, Ailsastra achituvi sp. nov., R = 10 mm, NHM 1951.5.7.12; b, Ailsastra amezianeae sp. nov., R = 10 mm, MNHN EcAs 11845; c, Ailsastra booneni sp. nov., R = 9 mm, UF 1938; d, Ailsastra eleaumei sp. nov., R = 7.5 mm, MNHN EcAs 11843; e, Ailsastra heteractis (H.L. Clark, 1938), R = 7 mm, MCZ 3258; f, Ailsastra paulayi sp. nov., R = 16 mm, UF 1815.
Figure 2 in A new asterinid genus from the Indo-West Pacific region, including five new species (Echinodermata: Asteroidea: Asterinidae)
Figure 2. Abactinal view of holotypes of species of Ailsastra gen. nov. (photographed at same magnification). a, Ailsastra achituvi sp. nov., R = 10 mm, NHM 1951.5.7.12; b, Ailsastra amezianeae sp. nov., R = 10 mm, MNHN EcAs 11845; c, Ailsastra booneni sp. nov., R = 9 mm, UF 1938; d, Ailsastra eleaumei sp. nov., R = 7.5 mm, MNHN EcAs 11843; e, Ailsastra heteractis (H.L. Clark, 1938), R = 7 mm, MCZ 3258; f, Ailsastra paulayi sp. nov., R = 16 mm, UF 1815.
Figure 2. Marginaster paucispinus NMV F240386 in New occurrence of Poraniidae (Valvatacea, Asteroidea) in Australia with a new genus and species from deep-sea settings
Figure 2. Marginaster paucispinus NMV F240386: a, abactinal view; b, actinal view; USNM holotype 032641: c, abactinal view; d, actinal view. MNHN-2013-1518: e, abactinal view; f, actinal view. Scale bars a, b=1.0 mm, c, d, e, f=1.5 mm. Photos by Melanie Mackenzie NMV.
Figure 3. Poraniomorpha tartarus n in New occurrence of Poraniidae (Valvatacea, Asteroidea) in Australia with a new genus and species from deep-sea settings
Figure 3. Poraniomorpha tartarus n. sp., holotype. NMV F 241811: a, abactinal; b, abactinal surface showing madreporite, surface texture; c, actinal view; d, actinal intermediate region and inferomarginals; e, actinal view furrow spines, oral region. Scale bars a=9.0 mm, b=5.0 mm, c=9.0 mm, d, e=2.0 mm.
Figure 1. Bathymarginaster patriciae nov. gen. nov. comb. NMV F240376 in New occurrence of Poraniidae (Valvatacea, Asteroidea) in Australia with a new genus and species from deep-sea settings
Figure 1. Bathymarginaster patriciae nov. gen. nov. comb. NMV F240376: a, abactinal; b, abactinal surface showing granules; c, abactinal-lateral view showing lateral surface, marginal series; d, actinolateral view showing edge and actinal surface; e, actinal view; f, closeup of actinal view showing adambulacral spination, oral view. Scale bars a=3.5 mm, b=1.5 mm, c, f=2 mm, d=2.5 mm, e=3.5 mm.
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Allen Brain Atlas
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DANDI Archive for NWB datasets
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International Brain Laboratory public data
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OpenNeuro
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