Carpenter, William Benjamin, 1813-1885 · Philadelphia : Blakiston · leaf 675
erestingtype shall have been more fully elucidated, no satisfactory classifi-cation of them can be framed; and nothing more will be hereattempted than to indicate some of the principal forms underwhich the Radiolarian type presents itself. 502. Discida.—Among the beautiful siliceous structures… … Varietal modifications of Astromma. variation that is compatible with conformity to a general plan ofstructure. As in other forms of HaeckelV group of Discida, there isin this skeleton a combination of radial and of circumferential parts;the former consisting of solid spoke-like rods, whilst the…
Microscopy · Biology
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