May 21, 2002 ... One popular theory advocates the separation of chordates from a dipleurula-like ancestor. Thus the dipleurula-type larvae (tornaria of ...
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One popular theory advocates the separation of chordates from a dipleurula-like ancestor. Thus the dipleurula-type larvae (tornaria of enteropneusts, auricularia ...
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Dipleurula - Wikipedia, the free encyclopedia
en.wikipedia.org/wiki/Dipleurula
The Dipleurula is a bilaterally symmetrical, ciliated echinoderm larva. Dipleurula represents an ancestral form for these primitive deuterostomes. We can see that ... |
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In ancestral chordates and modern urochordates and cephalochordates (as ... The dipleurula type of larva is found only in the echinoderms and hemichordates.
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Jul 29, 2011 ... Diagrammatic reconstruction of imagined Dipleurula ancestor. Anterior end at left of drawing; organs of left side toward observer, and with ...
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So the main question is this: Are the trochophora and dipleurula larvae ancestral to protostomes and deuterostomes (or perhaps ambulacrarians), respectively, ...
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band of a dipleurula-type larva resembling an echino- derm larva should have moved dorsally and fused to form the neural tube of the ancestral chordate.
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Dipleurula = hypothetical ancestor; small, ciliated bilateral, benthic or pelagic. 2. Primitive features of dipleurula incorporated into larvae of echinoderms ...
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The "dipleurula theory" suggests that ancient adult echinoderms had this band also, and that in the ancestors of the chordates, it fused along the back to form the ...
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The dipleurula larva is thought to be ancestral to the Echinoderms + Hemichordata. tornaria larva of pterobranch hemichordate. Trochophore larva is ancestral to ...
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