...No embryonic development was observed in most individuals until June or later... 
Ray D. Burkett 「Natural History of Cottonmouth Moccasin, Agkistrodon piscovorus (Reptilia)」
...This departure is usually areversion to a more elementary or embryonic stage, so that the tumor tissuesmay be said to be structurally immature...
U.S. Department of Agriculture 「Special Report on Diseases of Cattle」
...The constitutional capacity to produce ovules is now known to be fargreater than the power of any bird to supply the material for thenourishment of germs through the embryonic stage...
John H. Robinson 「Our Domestic Birds」
...Anal plate: in caterpillars, the shield-like coveringof the dorsum of the last segment: in the embryonic larva the11th tergite...
John. B. Smith 「Explanation of Terms Used in Entomology」
...Imaginal buds, cells, or discs: in forms with acomplete metamorphosis are those embryonic cells around and fromwhich the organs and appendages of the future imago develop...
John. B. Smith 「Explanation of Terms Used in Entomology」
...The spring consists of a pair of three-jointed appendages, with thebasal joints soldered together early in embryonic life, while the othertwo joints are free, forming a fork...
Alpheus Spring Packard 「Our Common Insects」
...It is evident that in the young grasshoppers, themetamorphoses have been passed through, so to speak, in the egg, whilethe bee larva is almost embryonic in its build...
Alpheus Spring Packard 「Our Common Insects」
...At approximately 35 days the eggsbecame dark red; embryonic structures were discernible thereafteronly in eggs that had embryos situated at one end, close tothe shell...
John M. Legler 「Natural History of the Ornate Box Turtle, Terrapene ornata ornata Agassiz」
...The range of temperatures tolerated by developing eggs probablyvaries with the stage of embryonic development...
John M. Legler 「Natural History of the Ornate Box Turtle, Terrapene ornata ornata Agassiz」
...They may have done sooriginally, but we must remember that the embryonic life itself has beensubject to adaptive changes for millions of years...
Ernst Haeckel 「The Evolution of Man」
...Hence it is important that we find a large number oflower animal forms to be still represented in the course ofman’s embryonic development...
Ernst Haeckel 「The Evolution of Man」
...This inference from the unicellular embryonic form to theunicellular ancestor is so simple, but so important, that we cannotsufficiently emphasise it...
Ernst Haeckel 「The Evolution of Man」
...—from the similar forms of the other higher mammals, we mayconfidently assume that they agree in the earliest embryonic processes,segmentation and the formation of germinal layers...
Ernst Haeckel 「The Evolution of Man」
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