...sila, the series of notesproduced in any given call of a species of Smilisca is essentially the same;there is no differentiation into primary and secondary notes...
William E. Duellman 「Neotropical Hylid Frogs, Genus Smilisca」
...Savage (MS) relied on the paleogeographic maps of Lloyd (1963) tohypothesize the extent and centers of differentiation of the Middle AmericanFaunal Element...
William E. Duellman 「Neotropical Hylid Frogs, Genus Smilisca」
...Morphological and ecological differentiation of Peromyscus merriamifrom southern Arizona...
J. Knox Jones, Jr. 「Noteworthy Mammals from Sinaloa, Mexico」
...A secondary area of differentiation is indicatedwithin the range of B...
Robert L. Packard 「Speciation and Evolution of the Pygmy Mice, Genus Baiomys」
...Moy-Thomas(1935:40; 1937:385) realized that the type of scale is a poor criterionfor specific differentiation...
Joan Echols 「A New Genus of Pennsylvania Fish (Crossoperygii, Coelacanthiformes) from Kansas」
...Frequently this differentiation of the cell-formssets in at a very early stage, during the segmentation-process, and is alreadyvery appreciable in the blastula...
Ernst Haeckel 「The Evolution of Man」
...It is here alone that we find the importantchanges which lead to the differentiation of the first organs...
Ernst Haeckel 「The Evolution of Man」
...That the first cells to appear on the earth wereformed from the Monera by such a differentiation seems to us the only possibleview in the present condition of science...
Ernst Haeckel 「The Evolution of Man」
...We find the first differentiation of epithelial andstinging cells, or of muscular and neural cells, in the thick ectoderm of thehydra...
Ernst Haeckel 「The Evolution of Man」
...On closer examination wefind here also a small vesicular swelling at the fore end of the tube, thefirst trace of a differentiation of it into brain and spinal cord...
Ernst Haeckel 「The Evolution of Man」
...These simple structures develop directly into fins in thefishes and Dipneusts by differentiation of their cells...
Ernst Haeckel 「The Evolution of Man」
...The further advance of this contrastbetween the generating cells led to sexual differentiation...
Ernst Haeckel 「The Evolution of Man」
...The origin of the Müllerian duct is still obscure; comparative anatomyand ontogeny seem to indicate that it originates by differentiation from theWolffian duct...
Ernst Haeckel 「The Evolution of Man」
...The first structure of the nephroduct andits differentiation into Müllerian and Wolffian ducts are just the same in bothsexes in the Amphibia, as in the mammal embryos (Figs...
Ernst Haeckel 「The Evolution of Man」
...When paws are differentiated into handsand feet, with the differentiation of the organs, there is a concomitantdifferentiation in the functions...
J. W. Powell 「On Limitations To The Use Of Some Anthropologic Data」
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