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si-pddr.si.edu/dspace/bitstream/10088/15320/1/USNMP-64_...
si-pddr.si.edu/dspace/bitstream/10088/15320/1/USNMP-64_2493_1924.pdf
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Rays 5, soft and weak; abactinal skeleton reduced to isolated small spiniferous plates sometimes interspersed with vestigial perforated spineless platelets ; ...
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si-pddr.si.edu/dspace/bitstream/10088/15989/1/USNMP-78_...
si-pddr.si.edu/dspace/bitstream/10088/15989/1/USNMP-78_2859_1931.pdf
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Resembling Spormterias, but the abactinal skeleton typically reduced to an open, delicate irregular mesh, entirely hidden by thick pulpy skin, which in the adult, ...
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books.google.com/books/about/Asteroidea_of_the_North_Pa...
books.google.com/books/about/Asteroidea_of_the_North_Pacific_and_Adja.html?id=Pb0hAQAAMAAJ
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abactinal plates abactinal skeleton actinal intermediate plates Actinal interradial areas actinal surface actinolateral adambulacral armature adambulacral plates ...
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www.tandfonline.com/doi/abs/10.1017/S1477201905001525
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of asteroids is equally ancient. Evidence presented here sug- gests that marginals in the earliest asterozoans are part of this axially derived abactinal skeleton.
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www.tandfonline.com/doi/abs/10.1080/00222938000770171
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ginals, and the loosely tessellate abactinal skeleton bearing skin-covered spinelets all to be similar to patterns seen in the Asteropseidae, but that Metrodlra ...
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www.nzetc.org/tm/scholarly/tei-Vic52Zool-t1-body-d6-d4-...
www.nzetc.org/tm/scholarly/tei-Vic52Zool-t1-body-d6-d4-d3.html
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Abactinal skeleton close reticulum of oblong, trilobate or cruciform plates obscured by thick membrane; plates with from 5–15 short flattened, hyaline spinelets ...
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www.nzetc.org/tm/scholarly/tei-Vic24Zool-t1-body-d5-d5-...
www.nzetc.org/tm/scholarly/tei-Vic24Zool-t1-body-d5-d5-d2.html
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Plate 2. A, B, Peribolaster lictor sp. nov.; A, abactinal skeleton and armature, midway along arm of holotype; B, oral, adambulacral and inferomarginal plates.
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journals.cambridge.org/article_S1477201905001525
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of asteroids is equally ancient. Evidence presented here sug- gests that marginals in the earliest asterozoans are part of this axially derived abactinal skeleton.
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www.jstor.org/stable/10.2307/1305263
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number of rays, the reticulated abactinal skeleton, the numerous spines, and the form and arrangement of the adambulacral ar- mature. The number of rays ...
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