Praeconocaryomma decora, Cifer & Goričan & Gawlick & Auer, 2020

Cifer, Tim, Goričan, Špela, Gawlick, Hans-Jürgen & Auer, Matthias, 2020, Pliensbachian, Early Jurassic radiolarians from Mount Rettenstein in the Northern Calcareous Alps, Austria, Acta Palaeontologica Polonica 65 (1), pp. 167-207 : 177

Praeconocaryomma decora gr. Yeh, 1987

Fig. 7O–R.

1987 Praeconocaryomma decora sp. nov.; Yeh 1987: 39, pl. 6: 15; pl. 20:1, 2, 9, 16, 19.

1987 Praeconocaryomma sp. A ; Yeh 1987: 40, pl. 2: 17, 22; pl. 20: 4.

1987 Praeconocaryomma sp. C ; Yeh 1987: 40, pl. 2: 28; pl. 20: 5.

1990 Praeconocaryomma decora Yeh, 1987 ; Nagai 1990: pl. 6: 6.

1998 Praeconocaryomma decora Yeh, 1987 ; Yeh and Cheng 1998: 15, pl. 11: 1, 5.

2002 Praeconocaryomma sp. A Yeh, 1987: Whalen and Carter 2002: 108, pl. 8: 5.

2003 Praeconocaryomma spp. ; Goričan et al. 2003: 291, pl. 1: 10 (only).

2006 Praeconocaryomma decora gr. Yeh, 1987; Goričan et al. 2006: 324, pl. PRY01: 1, 2.

2008 Praeconocaryomma decora gr. Yeh, 1987; Črne and Goričan 2008: fig. 8a.

2011 Praeconocaryomma decora gr. Yeh, 1987; Bertinelli and Marcucci 2011: 406, pl. 1: 6, 7, 8.

Material.— Sample Rö40: stub Rö40_1 (five specimens); sample Rö97: stub Rö97_4 (25 specimens), Mount Rettenstein , Northern Calcareous Alps, Austria, Lower Pliensbachian .

Remarks.—Similarly as Goričan et al. (2006) we consider Praeconocaryomma decora as a group of morphotypes with imperforate mammae and a variable interlocking meshwork of relatively large intermammary pore frames. We, therefore, agree with Bertinelli and Marcucci (2011) who assigned to P. decora Hettangian morphotypes with a considerably less complex intermammary structure than that of the type material illustrated by Yeh (1987).

Stratigraphic and geographic range.—Upper Lower Pliensbachian to Aalenian ( Carter et al. 2010); Hettangian ( Bertinelli and Marcucci 2011). Oregon ( USA), Baja California Sur, Italy, Northern Calcareous Alps ( Austria), Oman, and Philippines.