placula

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PLACULA Definition & Meaning - Merriam-Webster
The meaning of PLACULA is the flattened blastula of urochordates or a similar oligochaete embryo. www.merriam-webster.com
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placula - Wiktionary, the free dictionary
A little plate or plaque. Related terms. edit · placular · placulate. en.wiktionary.org
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Urmetazoan - Wikipedia
The placula hypothesis, proposed by Otto Bütschli, holds that the last common ancestor of animals was an amorphous blob with no symmetry or axis. The center ... en.wikipedia.org
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placula
‖ placula Biol. (ˈplækjʊlə) [mod.L., dim. from Gr. πλάξ, πλάκ- tablet, plate.] Name for the embryo of Calcispongiæ at that stage in its development when it has the form of a plate or disc. Hence ˈplacular, ˈplaculate adjs., having the form of a placula.1884 A. Hyatt in Proc. Boston Soc. Nat. Hist. X... Oxford English Dictionary
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placula, n. meanings, etymology and more | Oxford English Dictionary
The earliest known use of the noun placula is in the 1880s. OED's earliest evidence for placula is from 1884, in a paper by A. Hyatt. www.oed.com
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Placozoa and the evolution of Metazoa and intrasomatic cell ...
Placozoa have the lowest degree of intrasomatic variation; the number of somatic cell types according to text books is four (but see also Jakob W, Sagasser S, ... pubmed.ncbi.nlm.nih.gov
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Hoilungia
Grell derived the name from the placula hypothesis, Otto Bütschli's notion on the origin of metazoans. wikipedia.org
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Modern Placula Hypothesis. Modern interpretation and modifi cation ...
The Placula transforms from a primitive disk consisting of an upper and a lower epithelium (lower row) to a form with an external feeding cavity between its ... www.researchgate.net
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Placozoa - Wikipedia
Placozoa is a phylum of free-living (non-parasitic) marine invertebrates. They are blob-like animals composed of aggregations of cells. Moving in water by ... en.wikipedia.org
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"placula" definitions and more: Early, flattened stage of sponge
▸ noun: A little plate or plaque. Similar: placode, plakea, floorplate, plumula, uroplaque, plathelminth, toothplate, lamella, plastidule, plastrum, more... onelook.com
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Modern Interpretation and Modification of the Placula Hypothesis of...
The shown new placula hypothesis illustrates a potential transition from a non- symmetric, axis-lacking placula into a radial symmetric and head-foot axis ... www.researchgate.net
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diplo-
diplo- (ˈdɪpləʊ) before a vowel dipl-, combining form of Gr. διπλό-ος, διπλοῦς twofold, double, occasional in ancient Greek, now used in many scientific terms; e.g. diplaˈcusis Path. [Gr. ἄκουσις hearing], double hearing, the hearing of two notes when only one is produced, due to the hearing of a di... Oxford English Dictionary
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planula
‖ planula Zool. (ˈplænjʊlə) Pl. -æ. [mod.L., a little plane, dim. of plānus plane a.] The flat-shaped ciliated free-swimming embryo of certain Hydrozoa; hence extended to a similar embryo in Cœlenterates generally.1870 Nicholson Man. Zool. 89 The embryo is a free-swimming, oblong, ciliated body, ter... Oxford English Dictionary
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