| Most such particles are echinoderm stem ossicles, brachiopods, bryozoans or other corals. |
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| This paper is the first in a series of studies re-describing echinoderm taxa from these biogeographically important Paleozoic assemblages. |
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| The name echinoderm comes from the Greek echinos, meaning hedgehog, and derma, the skin. |
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| By contrast with other echinoderm species, basket stars are unknown in storm drift lines. |
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| The echinoderm body plan has pentameral symmetry, a water vascular system and a ring-shaped nervous system. |
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| The fine internal structure of echinoderm sclerites bears no resemblance to that of bone. |
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| Gogia is an eocrinoid, a member of a grouping of early echinoderms that probably included the ancestors of true crinoids and other echinoderm taxa. |
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| Crinoids are marine invertebrates, classified in the echinoderm family, in which we find in particular sea urchins and starfishes. |
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| As in some modern echinoderm species, it is common for those in the Cambrian to show evidence of a gregarious habit and patchy distribution. |
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| Features: Crinoids are the most numerous class of echinoderm found in Témiscamingue. |
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| Toxic pulp and paper mill effluent component identification using echinoderm fertilization bioassays. |
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| Echinoids are one of the more diverse and successful echinoderm groups today, including familiar echinoderms such as the sea urchins and sand dollars. |
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| Of the 17 echinoderm families Dr Thuy and Dr Kiel found represented at Glasenbach, eight have since become extinct, but nine remain in deep-water ecosystems today. |
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| The echinoderm larva also feeds and grows as well as serves for dispersal. |
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| Lab demonstrations were given for the new echinoderm embryo sediment toxicity test and for the three procedures used in pH maintenance for the rainbow trout toxicity test for municipal wastewaters. |
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| Bilaterally symmetric embryos of echinoderms, which as adults display pentamerous radial symmetry, likewise are relics that disclose secrets of echinoderm origins. |
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| Also imaged were a variety of invertebrate plankters, ranging from copepods and larvaceans to ctenophores and medusae to invertebrate larval types, such as echinoderm pluteus. |
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| This unit contains oncoids, echinoderm ossicles, bivalve fragments, tuberoids containing renalcid species A, ostracode valves, intraclasts, Parafavreina, and quartz silt. |
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