. Bulletins of American paleontology. . Text-figure 9. Convergence in form in four ostracodes with arch-beam structure. The upper two are relatively shallow water and massive, the lower two are deep-sea and much more delicate. The two on the left belong to the genus Eocytheropteron or a closely related genus and the two on the right are Aurila and Pterygocytheref. Note the coincidence of structural detail in sup- port of the main structural members. can be a very strong yet economical structural system, which can increase its strength further by adding mass outboard. Some reticulate species ac
. Bulletins of American paleontology. . Text-figure 9. Convergence in form in four ostracodes with arch-beam structure. The upper two are relatively shallow water and massive, the lower two are deep-sea and much more delicate. The two on the left belong to the genus Eocytheropteron or a closely related genus and the two on the right are Aurila and Pterygocytheref. Note the coincidence of structural detail in sup- port of the main structural members. can be a very strong yet economical structural system, which can increase its strength further by adding mass outboard. Some reticulate species actually be- come smooth in external appearance as the top flanges of the strut members broaden and 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 Paleontological Research Institution (Ithaca, N. Y. ); Columbia University. Ithaca, N. Y. , Paleontological Research Institution [etc. ]
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Keywords: ., bookauthorpaleonto, bookcentury1800, bookdecade1890, bookyear1895
