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Fistulipora zonata
Taxonomy
Fistulipora zonata was named by Girty (1915). It is not extant.
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1915 | Fistulipora zonata Girty pp. 322 - 323 figs. pl. 29 f. 1-2 |
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
†Fistulipora zonata Girty 1915
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| G. H. Girty 1915 | Zoarium laminar to sub-hemispheric, attaining a diameter of about 40 millimeters and having an irregular base covered by an epitheca. At irregular periods two or more unusually flat cysts were simultaneously developed, thus producing zones of close texture, separating usually wider zones of loose texture. These zones, manifested primarily in the cysts, appear to have been connected, though less strongly and sharply, with the development of diaphragms in the zooecia. The periodic structure just described has been observed in several specimens and probably is present in all of them in a greater or less degree. The zooecia have an exceedingly brief prostrate stage and appear to spring almost directly from the epitheca in full size. They occur at more or less regular intervals and distinct maculae appear to be absent. Certainly we\1- defined areas without zooecia are not present. Four zooecia and three interspaces (varying to 3 zooecia and 3 interspaces) occur in 2 millimeters. The interspaces range in size from rather less to rather more than the diameter of the zooecia. The latter vary in absolute measurement from .31 to .36 millimeter in diameter including the wans which have a thickness of about .028 millimeter. The walls of the zooecia have essent, ially the same thickness as those oC the cyst; both are stout. Most of the zooecia are nearly circular in section though nearly always with a slightly petaloid shape. Only here and there is a distinct lunarium seen. Diaphragms cross the zooecial tubes at frequent but irregular intervals which range from less than to more than twice a tube diameter. The cysts are distinctly smaller than the zooecia and occur in one or two rows between them. |