Parafrondicularia helenae (Chapman)
publication ID |
https://doi.org/ 10.26879/444 |
persistent identifier |
https://treatment.plazi.org/id/A029445F-E93A-FF98-48BF-B846747BA4CB |
treatment provided by |
Felipe |
scientific name |
Parafrondicularia helenae (Chapman) |
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Parafrondicularia helenae (Chapman) View in CoL
Figures 10.19, 10.20 View FIGURE 10
1941 Parafrodicularia helenae Chapman , pp. 154, 170, pl. 9, fig. 5.
1941 Plectofrondicularia interrupta (Karrer) — LeRoy (Part 1), p. 31, pl. 3, figs. 49, 50. (non Frondicularia interrupta Karrer, 1877 ).
1964 Plectofrondicularia interrupta (Karrer) — LeRoy, p. F29, pl. 5, fig. 25.
1994 Plectofrondicularia helenae (Chapman) — Jones, p. 78, pl. 66, figs. 6, 7.
Remarks. According to Jones (1994), P. interrupta is a junior synonym of the other valid species, P. helenae . Parafrondicularia japonica Asano (1938a) , type species of the genus Parafrondicularia , resembles P. helenae , but it can be differentiated by the character of the longitudinal striations that do not extend over the sutures as clearly illustrated by Aoki (1968) as Plectofrondicularia japonica (Asano) . The genus Parafrondicularia is distinguished from Plectofrondicularia in having a longer biserial juvenile stage. If we regard such a feature to fall within the range of variation of the genus Plectofrondicularia as Jones (1994) did, there is the problem of homonymy between Plectofrondicularia japonica Asano (1953) and Parafrondicularia japonica Asano (1938a) .
Occurrence. Rare in the Onogoshi and Yonahama formations.
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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Parafrondicularia helenae (Chapman)
Hanagata, S & Nobuhara, T 2015 |
Frondicularia interrupta
Karrer 1877 |