Clavatorella aff. suturanii Giannelli and Salvatorini
publication ID |
https://doi.org/ 10.26879/444 |
persistent identifier |
https://treatment.plazi.org/id/A029445F-E908-FFAD-4BEF-BFE677A2A37B |
treatment provided by |
Felipe |
scientific name |
Clavatorella aff. suturanii Giannelli and Salvatorini |
status |
|
Clavatorella aff. suturanii Giannelli and Salvatorini
Figures 15.3, 15.4 View FIGURE 15
Compared with:
1976 Clavatorella suturanii Giannelli and Salvatorini , p. 168, pl. 1, fig. 1.
1985 Clavatorella suturanii Giannelli and Salvatorini — Bolli and Saunders, 1985, p. 255, fig. 45.3.
2004 Clavatorella sp. 1 — Hanagata, pl. 3, fig. 9.
Diagnosis. Small species with four to four and a half, slightly elongated chambers in the final whorl, moderately perforated smooth surface without ornament, aperture small interiomarginal U-shaped opening from umbilicus to near the periphery. Outer margin of chambers is lobulate and occasionally apiculate.
Remarks. This form is distinguishable from C. suturanii in having less inflated and less lobulate chambers. Kadar (1975, pl. 8, fig. 59) illustrated a morphotype of Clavatorella (Clavatorella) bermudezi (Bolli) that is somewhat similar to the present form, but differs in having more elongated chambers and an umbilicus-oriented aperture. Clavatorella suturanii and C. bermudezi have both been recorded from the Miocene; thus the present form is probably a descendant.
Occurrence. Common in the Yonahama Formation, sporadic in the Minebari Formation.
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.
Kingdom |
|
Phylum |
|
Class |
|
Order |
|
Family |
|
Genus |
Clavatorella aff. suturanii Giannelli and Salvatorini
Hanagata, S & Nobuhara, T 2015 |
Clavatorella suturanii
Bolli, H. M. & Saunders, J. B. 1985: 255 |