. Bulletin - New York State Museum. Science. i»>0 m:\\ h>i:k m a I h MUSIXM aud, like 1) i c h o ji: r a p t u s o c t o b r a e h i a t u s and Tetragraptus, reached a staj^'e with a tixed aud more limited Dumber of braiuhes. This form would then stand at the. Fig. 11 Idem. Mature hydrosome. Shows the restricted number of branches (24), in this variety. Nat. size end of the Goniograptidae, as far as the genus is known, and might be designated as Goniograptus thureaui var. postremus. The important ontogenetic and morphogenic facts of which this series of growth stages permits a statement
. Bulletin - New York State Museum. Science. i»>0 m:\\ h>i:k m a I h MUSIXM aud, like 1) i c h o ji: r a p t u s o c t o b r a e h i a t u s and Tetragraptus, reached a staj^'e with a tixed aud more limited Dumber of braiuhes. This form would then stand at the. Fig. 11 Idem. Mature hydrosome. Shows the restricted number of branches (24), in this variety. Nat. size end of the Goniograptidae, as far as the genus is known, and might be designated as Goniograptus thureaui var. postremus. The important ontogenetic and morphogenic facts of which this series of growth stages permits a statement are: 1 The ''funick'^ of Gonwgraptus consists of two thecae. The equal length of the two parts of the funide between the sicula and the first dichotomy and of the primary branches in the other multiramose dichograptids indicates that the funicle is in all these constructed of two thecae.' With ad- vancing growth of the colony, the two thecae of the funicle, like those of tin- principal stems, become greatly thickened and assume the form of cylindric stems, thus more or less losing indications of their former thecal nature (fig. 10 and 111. The statement, found from Hall's work onward in nearly all descriptions of the colonies of these multiramose dichograp-. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original New York State Museum; New York State Museum. Albany : New York State Education Dept
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectscience, bookyear1887
