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4 results for “Asteriids”
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 3 in A new fissiparous micro-asteriid from southern Australia (Echinodermata: Asteroidea: Asteriidae)
Figure 3. Asteriid species of the rocky shallows of the coast of Victoria. a, b. Coscinasterias muricata Verrill (NMV F73314): a, abactinal view showing unequal arm lengths (fissiparous when juvenile), alternating spiniferous and non-spiniferous small carinal plates, and digitiform thin marginal spines; b, actinal view showing 10 arms (2 very small regenerating) of a typically 11 arm species. c, d. Uniophora granifera (Lamarck) (NMV F113567): c, abactinal view showing typical 5 equal rays, globose abactinal spinelets, and globose marginal spines; d, actinal view showing globose spines with distinct stem. e, f. Smilasterias multipara O'Loughlin and O'Hara (NMV F121895): e, abactinal view showing typical 5 equal rays, digitiform thin marginal spines; f, actinal view.
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