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- Body cavity (2315 bytes)
3: ... the opening becomes the anus. [[Chordate]]s and echinoderms are both Deuterostomes. - Europe (23835 bytes)
- Animal (16429 bytes)
- Geologic time scale (26014 bytes)
162: ...e]]s, [[ostracod]]s, [[bryozoa]], many types of [[echinoderms]] ([[Cystoidea|cystoids]], [[crinoid]]s, starfish... - Sea star (6210 bytes)
28: ...yologically]]) known as [[deuterostome]]s. Since echinoderms and chordates share this same embryological patte... - Echinoderm (4512 bytes)
1: {{Taxobox_begin | color = pink | name = Echinoderms}}
16: '''Echinoderms''' (Echinodermata) is a [[Phylum (biology)|phylum...
23: ...ar]]s and [[basket star]]s), the largest class of echinoderms.
27: ...ymmetric]] creatures. Later forms were lopsided. Echinoderms' larvae are [[cilia]]ted free-swimming organisms ...
29: All echinoderms exhibit fivefold radial symmetry in portions of t... - Animal E (429 bytes)
8: *[[Echinoderms]] - Marine Life (10377 bytes)
- Sea Urchins (11174 bytes)
41: ...tle-stars]], and [[Crinoid|crinoids]]. Like other echinoderms they have five-fold or ''pentamerous'' [[radial s...
43: Within the echinoderms, sea urchins are classified as '''echinoids''' (c... - Brittle star (5616 bytes)
20: ... water, an ability otherwise almost unknown among echinoderms.
25: Like all echinoderms, the Ophiuroidea possess a calcium carbonate (cal...
27: Of all echinoderms, the Ophiuroidea may have the strongest tendency ...
31: ...ngly reduced, particularly in comparison to other echinoderms. The nervous system consists of a main nerve ring... - Carboniferous (4655 bytes)
58: ...ly rich in [[crinoids]] and other [[echinodermata|echinoderms]]. [[Brachiopoda|Brachiopods]] were abundant. [[T...
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