Phillipsastrea d’Orbigny, 1849
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https://doi.org/ 10.5281/zenodo.13304867 |
persistent identifier |
https://treatment.plazi.org/id/03CC87B1-322A-924C-EC14-CA70FC487F0A |
treatment provided by |
Felipe |
scientific name |
Phillipsastrea d’Orbigny, 1849 |
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Genus Phillipsastrea d’Orbigny, 1849 Phillipsastrea nevadensis Stumm, 1940
Fig. 7D, E View Fig .
Phillipsastrea nevadensis n. sp.; Stumm 1940: 66, pl. 7: 13, pl. 8: 15a, b.
Material.—Ten different−sized specimens.
Remarks.—Massive, wall between individuals lost, with septa of neighboring individuals being in contact. There are 10–12 major septa which generally extend to the center. Both major and minor septa are dilated at the inner margin of the dissepimentarium; dilation of the majors slightly more inwardly extended. In the tabularium, the majors are very delicate; the tabularium is 2 to 2.5 mm wide; distance between neighboring tabularia is about 3 mm. There are commonly one row of horse−shoe dissepiments forming the tabularium wall and some fan−like dissepiments outwardly. The tabulae are divided into peripheral series and axial series, with the latter being 10 or more per 5 mm.
The Hunan specimens basically resemble P. nevadensis in the strong dilation of septa at the inner margin of the dissepimentarium, delicate septa in the tabularium reaching the center, and smaller number of septa. However, the tabularium is narrower in the Hunan specimens (2 to 2.5 mm vs. 3 mm in North American specimens) and neighboring tabularia in our specimens are much closer to each other (about 3 mm from margin to margin) than those of the North American specimens (about 5 mm) as illustrated by Stumm (1940) and McLean (1994).
Occurrence.—Central Hunan in the Chongshanpu section; latest Frasnian.
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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Phillipsastrea d’Orbigny, 1849
Ma, Xue-Ping, Sun, Yuan-Lin, Hao, Wei-Cheng & Liao, Wei-Hua 2002 |
Phillipsastrea nevadensis
Stumm, E. C. 1940: 66 |