Parafrondicularia helenae (Chapman)

Hanagata, S & Nobuhara, T, 2015, Illustrated guide to Pliocene foraminifera from Miyakojima, Ryukyu Island Arc, with comments on biostratigraph, Palaeontologia Electronica (Cambridge, England) 33 (8), pp. 1-142 : 28-29

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)
status

 

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.

Kingdom

Chromista

Phylum

Foraminifera

Class

Nodosariata

Order

Polymorphinida

Family

Plectofrondiculariidae

Genus

Parafrondicularia

Loc

Parafrondicularia helenae (Chapman)

Hanagata, S & Nobuhara, T 2015
2015
Loc

Frondicularia interrupta

Karrer 1877
1877
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