Arthrodendron grandis ( Grzybowski, 1898 )

Benedetti, A, 2017, Eocene / Oligocene deep-water agglutinated foraminifers (DWAF) assemblages from the Madonie Mountains (Sicily, Southern Italy), Palaeontologia Electronica 20 (1), pp. 1-66 : 35-36

Arthrodendron grandis ( Grzybowski, 1898)

Figure 14.14

1898 Reophax grandis ; Grzybowski, p. 277, pl. 10, figs. 13-15.

1993 Aschemocella grandis (Grzybowski) ; Kaminski and Geroch, p. 249, pl. 2, figs. 8-10.

2005 Aschemocella grandis (Grzybowski) ; Kender, Kaminski, and Cieszkowski, p. 262, fig. 11D, E.

2008 Arthrodendron grandis (Grzybowski) ; Kaminski, Uchman, Neagu, and Cetean, p. 108.

2009 Aschemocella grandis (Grzybowski) ; Kender, Kaminski, and Jones, p. 497, pl.3, fig. 5.

Material. 56 specimens from 14 samples.

Description. Test free, large, uniseriate and curved, composed of discoidal and compressed chambers with raised periphery. Aperture single, peripheric, supported by a raised neck. Wall coarsely agglutinated.

Distribution. Species cosmopolitan known from the Campanian to the early Miocene ( Kaminski and Gradstein, 2005).

Remarks. Only isolated chambers have been recovered.

Figures

FIGURE 14. Scanning electron micrographs of Hormosinelloidea from the Caltavuturo Formation cropping out at Portella Colla. 1, Ammolagena clavata (Jones and Parker, 1860) on a specimen of Psammosiphonella cylindrica (Glaessner, 1937), PCs0. 2, Ammolagena clavata (Jones and Parker, 1860), PC060607. 3-7, Caudammina gutta Benedetti and Pignatti, 2009, PC18. 8, Subreophax cf. guttifer (Brady, 1881), PC15. 9, Subreophax cf. pseudoscalaris (Samuel, 1977), PCs0. 10, Subreophax scalaris (Grzybowski, 1896), PC11. 11-12, Subreophax splendidus (Grzybowski, 1898), PC060624 (11) and PC11 (12). 13, Arthrodendron subnodosiformis (Grzybowski, 1898), PC060615. 14, Arthrodendron grandis (Grzybowski, 1898), PC050515. 15-19, Kalamopsis grzybowskii (Dylążanka, 1923), PC18 (15), PC11 (16), PC18 (17), PC060621 (18) and PC060621 (19). Scale bar equals 0.5 mm.