O’Dogherty et al.—Jurassic radiolarians from the Eastern Alps


Archaeodictyomitra publica (Hull, 1997) Figure 7.17


1997 Combusta (?) publica Hull, p. 84, pl. 34, figs 3, 13, 20−21.


2006 Combusta (?) publica;O’Dogherty et al., p. 431, pl. 1, fig. 26. [See for complete synonymy]


2011 Parahsuum publicum; Yeh, p. 11, pl. 2, fig. 18.


Archaeodictyomitra rigida Pessagno, 1977a Figure 7.33−7.35


1977a Archaeodictyomitra rigida Pessagno, p. 81, pl. 7, figs. 10–11.


2003 2008


2009


Archaeodictyomitra rigida; Suzuki and Gawlick, p. 179, fig. 5.18; fig. 6.20.


Archaeodictyomitra rigida; Auer et al., fig. 9.7.


Archaeodictyomitra rigida; Suzuki and Gawlick, p. 168, fig. 5.9. [See for complete synonymy]


Archaeodictyomitra spelae Chiari, Cortese, and Marcucci in Chiari et al., 1997 Figure 7.48


1997 Archaeodictyomitra spelae Chiari, Cortese, and Marcucci in Chiari et al., p. 64, pl. 1, figs. 13−15.


2006 Archaeodictyomitra spelae; Danelian et al., pl. 1, fig. 11.


Remarks.—This species is distinguished from other Middle Jurassic Archaeodictyomitra species by its long slender shell and the marked strictures between adjacent segments.


Archaeodictyomitra tyaughtonensis Cordey, 1998 Figure 7.38−7.39


pl. 28, figs. 5−6. Archaeodictyomitra tyaughtonensis Cordey, 1998, p. 98,


Remarks.—According to Cordey (1998) this species is characterized by the well-visible segmentation and the fusiform shape.


Archaeodictyomitra sp. aff. A. exigua Blome, 1984 Figure 7.18−7.20


aff. 1984 Archaeodictyomitra exigua Blome, p. 356, pl. 8, figs. 4, 7–8, 10, 12–13; pl. 15, figs. 14–15.


Remarks.—This species resembles Archaeodictyomitra exigua in its conical shape, but differs by lacking the constricted final segment.


Archaeodictyomitra whalenae Kozur and Mostler in Grill and Kozur, 1986


Figure 7.46−7.47


1986 Archaeodictyomitra whalenae Kozur and Mostler in Grill and Kozur, p. 260, pl. 9, figs. 2–5.


1981


2003 2006


55


2006 Archaeodictyomitra whalenae;O’Dogherty et al., p. 430, pl. 1, figs. 8–9. [See for complete synonymy]


Genus Thanarla Pessagno, 1977b


Type species.—Phormocyrtis veneta Squinabol, 1903. Occurrence.—Lower Bathonian to upper Cenomanian.


Thanarla patricki gr. (Kocher, 1981) Figure 7.22−7.32


Archaeodictyomitra patricki Kocher, p. 57, pl. 12, figs. 14–17.


Archaeodictyomitra patricki; Suzuki and Gawlick, p. 178, fig. 5.19.


Archaeodictyomitra patricki;O’Dogherty et al., p. 430, pl. 1, figs. 15–17. [See for complete synonymy]


2007b Archaeodictyomitra patricki; Gawlick et al., fig. 19.13. 2013


Superfamily Amphipyndacoidea Riedel, 1967 Family Amphipyndacidae Riedel, 1967


Genus Eoxitus Kozur, 1985 Type species.—Eoxitus hungaricus Kozur, 1985.


Other species.—Eoxitus baloghi Kozur, 1985 (syn. Eoxitus nodosus); ?Eoxitus brevis Kozur, 1985; Eoxitus elongatus Kozur, 1985; Eoxitus nodosus Kozur, 1985; Parvicingula dhimenaensis Baumgartner, 1984, Triversus kasinzovae Vishnevskaya, 1991; ?Triversus strobilatus Vishnevskaya, 1991;?Triversus triquetrum Vishnevskaya, 1991.


Occurrence.—The stratigraphic occurrence of Eoxitus should be considered as lower Bajocian to Tithonian (see discussion above). The last representative of Eoxitus is E. dhimenaensis, which goes extinct in the Tithonian.


Remarks.—Eoxitus is very similar to its allied Tethysetta, but is much more elongated and does not have the characteristic broad spindle shape frequently observed throughout the Cretaceous forms assigned in Tethysetta.Bydefinition, Tethysetta species have well-developed circumferential ridges and do not have spines on tubercles, as is the case of older species of Eoxitus. The stratigraphic range of both genera in O’Dogherty et al.


(2009) was lower Bajocian−lower Aptian. These two genera are clearly distinguishable both morphologically and stratigraphi- cally. At that time, we included the only species bearing faint spines in the Cretaceous—Parvicingula usotanensis Tumanda, 1989. Nonetheless, we currently believe that this species should be assigned to Tethysetta because it displays the characteristic circumferential ridges, although it also possesses somewhat spiny tubercles. This morphotype is stratigraphically disconnected from other Jurassic spiny parvicingulids.


Archaeodictyomitra sp. cf. A. patricki; Chiari et al., Fig. 12c.


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