 | 1903 - 702 pages
...the vesicles are perforated by microscopic foramina, usually showing a distinctly linear arrangement. The clusters are connected together by creeping filamentous...single row of minute foramina, and which generally anastomose so as to form a network." This common and widely distributed species maintains its specific... | |
 | Wisconsin Geological and Natural History Survey - 1911 - 354 pages
...the vesicles are perforated by microscopic foramina, usually showing a distinctly linear arrangement. The clusters are connected together by creeping filamentous...single row of minute foramina, and which generally anastomose so as to form a network." The geographic distribution of this characteristic Middle Devonic... | |
 | Wisconsin Geological and Natural History Survey - 1911 - 352 pages
...the vesicles are perforated by microscopic foramina, usually showing a distinctly linear arrangement. The clusters are connected together by creeping filamentous...single row of minute foramina, and which generally anastomose so as to form a network." The geographic distribution of this characteristic Middle Devonic... | |
 | Yorkshire Geological Society - 1895 - 570 pages
...of fossil Ctenostomata, A. stellatum must be accepted also as an ally, especially so as the authors say " the clusters are connected together by creeping...Adherent to Spirifera mucronata, Conrad, and Cyrtina hamiltonensis, Hall. The following are peculiarly British Carboniferous species : ASCODICTYON RADIANS,... | |
 | 1877 - 572 pages
...the vesicles are perforated by microscopic foramina, usually showing a distinctly linear arrangement. The clusters are connected together by creeping filamentous...single row of minute foramina, and which generally anastomose so as to form a network. Obs. In its youngest stage (PL XIX. fig. 6)? A. stellatum presents... | |
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... pyriform calcareous vesicles, varying in length from one fifth to one third of a line, and usually disposed in stellate clusters, each containing from three to six cells, or sometimes more. The walls of the vesicles are perforated by microscopic foramina,... 